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id="toc-Measuring_resistance-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>External links</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Resistance" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Resistance"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Resistance</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Resistance-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Temperature?" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Temperature?"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Temperature?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Temperature?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-U-I_Graph?" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#U-I_Graph?"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>U-I Graph?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">4 comments</span> <ul id="toc-U-I_Graph?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Capitalization" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Capitalization"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Capitalization</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Capitalization-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Deletion_proposal" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Deletion_proposal"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Deletion proposal</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">3 comments</span> <ul id="toc-Deletion_proposal-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-English_variations" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#English_variations"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>English variations</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">4 comments</span> <ul id="toc-English_variations-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Fermi_Level" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Fermi_Level"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>Fermi Level</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Fermi_Level-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Suggest_merge" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Suggest_merge"> <div class="vector-toc-text"> <span class="vector-toc-numb">13</span> <span>Suggest merge</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">8 comments</span> <button aria-controls="toc-Suggest_merge-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Suggest merge subsection</span> </button> <ul id="toc-Suggest_merge-sublist" class="vector-toc-list"> <li id="toc-Merged" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Merged"> <div class="vector-toc-text"> <span class="vector-toc-numb">13.1</span> <span>Merged</span> </div> </a> <ul id="toc-Merged-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Resistance_matrix_and_conductance_matrix" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Resistance_matrix_and_conductance_matrix"> <div class="vector-toc-text"> <span class="vector-toc-numb">14</span> <span>Resistance matrix and conductance matrix</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Resistance_matrix_and_conductance_matrix-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-More_merging" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#More_merging"> <div class="vector-toc-text"> <span class="vector-toc-numb">15</span> <span>More merging</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-More_merging-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Conductance" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Conductance"> <div class="vector-toc-text"> <span class="vector-toc-numb">16</span> <span>Conductance</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Conductance-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sources_of_resistance_in_metals???" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Sources_of_resistance_in_metals???"> <div class="vector-toc-text"> <span class="vector-toc-numb">17</span> <span>Sources of resistance in metals???</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Sources_of_resistance_in_metals???-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-reorganized_and_moved_content" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#reorganized_and_moved_content"> <div class="vector-toc-text"> <span class="vector-toc-numb">18</span> <span>reorganized and moved content</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">5 comments</span> <ul id="toc-reorganized_and_moved_content-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-"R=1/G_always_for_a_given_element_in_a_circuit"?" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#"R=1/G_always_for_a_given_element_in_a_circuit"?"> <div class="vector-toc-text"> <span class="vector-toc-numb">19</span> <span>"R=1/G always for a given element in a circuit"?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">8 comments</span> <ul id="toc-"R=1/G_always_for_a_given_element_in_a_circuit"?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Resistance_defined_at_I=0?" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Resistance_defined_at_I=0?"> <div class="vector-toc-text"> <span class="vector-toc-numb">20</span> <span>Resistance defined at I=0?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">4 comments</span> <ul id="toc-Resistance_defined_at_I=0?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-name" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#name"> <div class="vector-toc-text"> <span class="vector-toc-numb">21</span> <span>name</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-name-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_network" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_network"> <div class="vector-toc-text"> <span class="vector-toc-numb">22</span> <span>Practical aspects of the electrical resistance as a part of the electrical network</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_network-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-SI_dimension_needed_fast" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#SI_dimension_needed_fast"> <div class="vector-toc-text"> <span class="vector-toc-numb">23</span> <span>SI dimension needed fast</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-SI_dimension_needed_fast-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-U_as_symbol_for_voltage" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#U_as_symbol_for_voltage"> <div class="vector-toc-text"> <span class="vector-toc-numb">24</span> <span>U as symbol for voltage</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-U_as_symbol_for_voltage-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-electric_vs._electrical" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#electric_vs._electrical"> <div class="vector-toc-text"> <span class="vector-toc-numb">25</span> <span>electric vs. electrical</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-electric_vs._electrical-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Underline_complex_numbers?" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Underline_complex_numbers?"> <div class="vector-toc-text"> <span class="vector-toc-numb">26</span> <span>Underline complex numbers?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">5 comments</span> <ul id="toc-Underline_complex_numbers?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Value_corrected_in_the_illustration" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Value_corrected_in_the_illustration"> <div class="vector-toc-text"> <span class="vector-toc-numb">27</span> <span>Value corrected in the illustration</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Value_corrected_in_the_illustration-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Why_the_letter_G_was_chosen_as_symbol_for_conductance" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Why_the_letter_G_was_chosen_as_symbol_for_conductance"> <div class="vector-toc-text"> <span class="vector-toc-numb">28</span> <span>Why the letter G was chosen as symbol for conductance</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Why_the_letter_G_was_chosen_as_symbol_for_conductance-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header 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If you would like to participate, please visit the project page, where you can join <a href="/wiki/Wikipedia_talk:WikiProject_Electrical_engineering" title="Wikipedia talk:WikiProject Electrical engineering">the discussion</a> and see a list of open tasks.<span class="metadata wpb-metadata"><span class="wpb-project">Electrical engineering</span><span class="wpb-project_link">Wikipedia:WikiProject Electrical engineering</span><span class="wpb-banner_name">Template:WikiProject Electrical engineering</span><span class="wpb-assessment_cat">electrical engineering</span></span></td><td class="mbox-empty-cell"></td></tr><tr><td class="assess import-high"><a href="/wiki/Category:High-importance_electrical_engineering_articles" title="Category:High-importance electrical engineering articles">High</a></td><td class="mbox-text" colspan="2">This article has been rated as <b>High-importance</b> on the <a href="/wiki/Wikipedia:WikiProject_Electrical_engineering/Assessment#Importance_scale" title="Wikipedia:WikiProject Electrical engineering/Assessment">project's importance scale</a>.</td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table> <meta property="mw:PageProp/toc"/> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="various_things_to_divide_up_right_now" data-mw-thread-id="h-various_things_to_divide_up_right_now-2006-05-03T08:54:00.000Z"><span data-mw-comment-start="" id="h-various_things_to_divide_up_right_now-2006-05-03T08:54:00.000Z"></span>various things to divide up right now<span data-mw-comment-end="h-various_things_to_divide_up_right_now-2006-05-03T08:54:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=1" title="Edit section: various things to divide up right now"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Ancheta_Wis-2006-05-03T08:54:00.000Z-various_things_to_divide_up_right_now"></span>We are going to discuss this page. This page is about what electrical resistance is. Electrical rsistance is measured in ohms. The way it explains is very complicated. Electrical resistance is the flow of electricity or the current of electricity. </p><p>Something is wrong with that last sentence above. On the article, the term <a href="/wiki/Negative_resistance" title="Negative resistance">negative resistance</a> doesn't seem right to me. A negative resistance would flip the current or voltage (but not both). Does the author mean <a href="/w/index.php?title=Negative_resistivity&action=edit&redlink=1" class="new" title="Negative resistivity (page does not exist)">negative resistivity</a> with respect to some other value, such as temperature? <a href="/wiki/User:Richj" title="User:Richj">Rich</a> </p> <dl><dd>What's this ? Someone wrote Ohm's law-but, it's only for DC, not AC where you got sine and other things. Look at some basic physics (or electromagnetism, or electrical engineering) textbook, for Chrissake.<a href="/wiki/User:Mir_Harven" title="User:Mir Harven">Mir Harven</a> 16:10, 13 Apr 2004 (UTC)</dd></dl> <dl><dd><dl><dd>ohms law works for a resistor whether the cuircuit is DC or AC. It can also be used with inductors or capacitors by using phasors and impedences represented by complex numbers. Neither of theese requires use of sine and cosine <a href="/wiki/User:Plugwash" title="User:Plugwash">Plugwash</a> 14:07, 8 Dec 2004 (UTC)</dd></dl></dd> <dd>What was wrong with the version from 22:56, 3 Dec 2004? The most recent edit even omits the mention of <a href="/wiki/Ground" class="mw-disambig" title="Ground">ground</a>, or even a reference point, without which the concept of resistance is hard to understand or measure.<a href="/wiki/User:Ancheta_Wis" title="User:Ancheta Wis">Ancheta Wis</a> 18:14, 8 Dec 2004 (UTC) <dl><dd>measuring with respect to an arbitary reference point seems far mroeo confusing to me than just stating the voltage accross the resistor. I have NEVER seen a book that uses votlages relative to an arbiary reference point in its basic description of the rule</dd></dl></dd></dl> <p>My mental model is </p> <ul><li>A - a voltmeter with a red lead and a black lead.</li></ul> <ol><li>touch the black lead to point 0, say <a href="/wiki/Ground" class="mw-disambig" title="Ground">ground</a></li> <li>touch the red lead to point 1, say the bottom of the resistor (closest to ground)</li> <li>V1 = the reading from the voltmeter.</li> <li>touch the red lead to point 2, say the top of the resistor. but keep the black lead at the <i>same point 0</i>. It is the reference point.</li> <li>V2 = the reading from the voltmeter.</li> <li>V2-V1=voltage across the resistor.</li></ol> <ul><li>B - Now get a current meter, and measure the current draw.</li></ul> <ol><li>I = the reading from the current meter</li> <li>R=(V2-V1)/I</li></ol> <p>If the books don't say this, you need better books. And you might hurt yourself if you don't know the basics and you can't even measure the voltage and current. Be careful during the measurement. Try to use one hand if possible, and an alligator clip to the reference point. <a href="/wiki/User:Ancheta_Wis" title="User:Ancheta Wis">Ancheta Wis</a> 00:56, 9 Dec 2004 (UTC) </p> <dl><dd>I wrote this without knowledge of how you chose your user-name; it is ironic that you should choose this topic to edit. Take care. Based on the evidence, I am reverting to 22:56, 3 Dec 2004. <a href="/wiki/User:Ancheta_Wis" title="User:Ancheta Wis">Ancheta Wis</a> 10:55, 9 Dec 2004 (UTC) P.S. it looks like some references to <a href="/wiki/Electrical_safety" class="mw-redirect" title="Electrical safety">electrical safety</a> and <a href="/wiki/Natural_hazard" class="mw-redirect" title="Natural hazard">natural hazards</a> are in order for this article and the related set of topics. <dl><dd>ahh the source of my username...long time ago...i was much younger and less ensible then</dd> <dd>i can see what you are getting at but isn't it far simpler to just measure the voltage accross the resistor directly (that is red lead to one end blkack load to the other read off the voltage (V) accross the resitor directly then R=V/I)? not to mention more accurate as well (especially in an AC system or if the value of the resistor is small) I can see uses of your method if you are trying to figure out a lot of things about a cuircuit or possiblly if you are workign on dangerous voltages and therefore are working one handed but for the initial introduction of the formulae it is just overcomplicating things. <a href="/wiki/User:Plugwash" title="User:Plugwash">Plugwash</a> 11:58, 9 Dec 2004 (UTC)</dd></dl></dd></dl> <p>The better books describe it simple first. Add my vote that it's counterintuitive and confusing to begin the explanation of a simple voltage drop with its definition as the difference between two differences between two points and a completely arbitrary and irrelevant third reference. The potential across the component is a single dimension, and it should be given as such. It would be perfectly fine to include the difference formula as an <i>additional</i> way of explaining it though. </p><p>I also don't consider it necessary to elaborate on practical issues in any article whose main topic should be the abstract definition of a physical property. Concrete safety-related issues about measuring instruments and their use aren't specific to resistance. A simple link on electrical safety in the 'see also' section should suffice, if any. <a href="/wiki/User:Femto" title="User:Femto">Femto</a> 14:43, 9 Dec 2004 (UTC) </p><p>Is there any reason why <a class="external free" href="https://en.wikipedia.org/wiki/Electronic_color_code">http://en.wikipedia.org/wiki/Electronic_color_code</a> is not mentioned in this article? </p> <dl><dd>added links in the caption to the resistor image --<a href="/wiki/User:Ancheta_Wis" title="User:Ancheta Wis">Ancheta Wis</a> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Ancheta_Wis-2006-05-03T08:54:00.000Z-various_things_to_divide_up_right_now" class="ext-discussiontools-init-timestamplink">08:54, 3 May 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Ancheta_Wis-2006-05-03T08:54:00.000Z-various_things_to_divide_up_right_now"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Ancheta_Wis-2006-05-03T08:54:00.000Z-various_things_to_divide_up_right_now"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Resistivity_and_Salt_Water" data-mw-thread-id="h-Resistivity_and_Salt_Water-2008-12-09T18:47:00.000Z"><span data-mw-comment-start="" id="h-Resistivity_and_Salt_Water-2008-12-09T18:47:00.000Z"></span>Resistivity and Salt Water<span data-mw-comment-end="h-Resistivity_and_Salt_Water-2008-12-09T18:47:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=2" title="Edit section: Resistivity and Salt Water"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Wiredrabbit-2008-12-09T18:47:00.000Z-Resistivity_and_Salt_Water"></span>The article says resistivity varies "greatly" with salt concentration. Would anyone care to quantify that? There is math there and I think worth while mentioning ionic v. covalent bonding and how salt and dirt change the bonding properties of water. How about a source? Anyway I was just looking for the actual formula and dissapointed not to find anything. <a href="/w/index.php?title=User:Wiredrabbit&action=edit&redlink=1" class="new" title="User:Wiredrabbit (page does not exist)">Wiredrabbit</a> (<a href="/wiki/User_talk:Wiredrabbit" title="User talk:Wiredrabbit">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Wiredrabbit-2008-12-09T18:47:00.000Z-Resistivity_and_Salt_Water" class="ext-discussiontools-init-timestamplink">18:47, 9 December 2008 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Wiredrabbit-2008-12-09T18:47:00.000Z-Resistivity_and_Salt_Water"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Wiredrabbit-2008-12-09T18:47:00.000Z-Resistivity_and_Salt_Water"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Question" data-mw-thread-id="h-Question"><span data-mw-comment-start="" id="h-Question"></span>Question<span data-mw-comment-end="h-Question"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=3" title="Edit section: Question"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>My father wants to know what resistance have 5ppm of silver ions in water. He needs the number and the formula. Does anyone know how to calculate this? Thanks. --<a href="/wiki/User:Eleassar777" class="mw-redirect" title="User:Eleassar777">Eleassar777</a> 17:03, 1 Jun 2005 (UTC) </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Measuring_resistance" data-mw-thread-id="h-Measuring_resistance-2005-08-01T20:34:00.000Z"><span data-mw-comment-start="" id="h-Measuring_resistance-2005-08-01T20:34:00.000Z"></span>Measuring resistance<span data-mw-comment-end="h-Measuring_resistance-2005-08-01T20:34:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=4" title="Edit section: Measuring resistance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Light_current-2005-08-01T20:34:00.000Z-Measuring_resistance"></span>I think that by definition, measurement of the resistance of a conductor would assume that the proper terminations had been made from the measuring device (ohm meter, mutimeter etc) to the resistance under measurement. I therefore think that the statement about c'ompletly covering the ends' is superfluous. </p><p>Does anyone agree or disagee??<a href="/wiki/User:Light_current" title="User:Light current">Light current</a> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Light_current-2005-08-01T20:34:00.000Z-Measuring_resistance" class="ext-discussiontools-init-timestamplink">20:34, 1 August 2005 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Light_current-2005-08-01T20:34:00.000Z-Measuring_resistance"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Light_current-2005-08-01T20:34:00.000Z-Measuring_resistance"></span> </p><p><span data-mw-comment-start="" id="c-TheGrimReaper®™©-2007-03-27T10:40:00.000Z-Measuring_resistance"></span>What do you define as 'Scattering events' in a wire? <a href="/wiki/User:TheGrimReaper%C2%AE%E2%84%A2%C2%A9" title="User:TheGrimReaper®™©">-Grim-</a> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-TheGrimReaper®™©-2007-03-27T10:40:00.000Z-Measuring_resistance" class="ext-discussiontools-init-timestamplink">10:40, 27 March 2007 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-TheGrimReaper®™©-2007-03-27T10:40:00.000Z-Measuring_resistance"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-TheGrimReaper®™©-2007-03-27T10:40:00.000Z-Measuring_resistance"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="External_links" data-mw-thread-id="h-External_links-2006-06-10T02:37:00.000Z"><span data-mw-comment-start="" id="h-External_links-2006-06-10T02:37:00.000Z"></span>External links<span data-mw-comment-end="h-External_links-2006-06-10T02:37:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Johndburger-2006-06-10T02:37:00.000Z-External_links"></span>I removed the convertor links (including four to the same friggin' site), per <a href="/wiki/Wikipedia:NOT" class="mw-redirect" title="Wikipedia:NOT">WP:NOT</a>. I left <a rel="nofollow" class="external text" href="http://www.sengpielaudio.com/calculator-ohm.htm">this one</a>, as it actually has some information that may add to the article, describing the magic triangle. However, I won't cry if someone delete that one too. —<a href="/wiki/User:Johndburger" title="User:Johndburger">johndburger</a> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Johndburger-2006-06-10T02:37:00.000Z-External_links" class="ext-discussiontools-init-timestamplink">02:37, 10 June 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Johndburger-2006-06-10T02:37:00.000Z-External_links"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Johndburger-2006-06-10T02:37:00.000Z-External_links"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Resistance" data-mw-thread-id="h-Resistance-2007-01-29T00:49:00.000Z"><span data-mw-comment-start="" id="h-Resistance-2007-01-29T00:49:00.000Z"></span>Resistance<span data-mw-comment-end="h-Resistance-2007-01-29T00:49:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=6" title="Edit section: Resistance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-71.235.17.165-2007-01-29T00:49:00.000Z-Resistance"></span>Does anyone know how resistance is used? It may seem like a stupid question but i'm only in junior high. </p> <pre>Matt S. </pre> <p><small>—The preceding <a href="/wiki/Wikipedia:Sign_your_posts_on_talk_pages" class="mw-redirect" title="Wikipedia:Sign your posts on talk pages">unsigned</a> comment was added by <a href="/wiki/Special:Contributions/71.235.17.165" title="Special:Contributions/71.235.17.165">71.235.17.165</a> (<a href="/wiki/User_talk:71.235.17.165" title="User talk:71.235.17.165">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-71.235.17.165-2007-01-29T00:49:00.000Z-Resistance" class="ext-discussiontools-init-timestamplink">00:49, 29 January 2007 (UTC)</a>.</small><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-71.235.17.165-2007-01-29T00:49:00.000Z-Resistance"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-71.235.17.165-2007-01-29T00:49:00.000Z-Resistance"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-207.63.251.215-2007-02-05T18:59:00.000Z-71.235.17.165-2007-01-29T00:49:00.000Z"></span>Think LEDs, my friend. 9V batteries are commonly used in robotics, and you need at least a 150 ohm resistor to power them directly from it. And It's not a stupid question, no question is. <a href="/w/index.php?title=User:207.63.251.215&action=edit&redlink=1" class="new" title="User:207.63.251.215 (page does not exist)">207.63.251.215</a> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-207.63.251.215-2007-02-05T18:59:00.000Z-71.235.17.165-2007-01-29T00:49:00.000Z" class="ext-discussiontools-init-timestamplink">18:59, 5 February 2007 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-207.63.251.215-2007-02-05T18:59:00.000Z-71.235.17.165-2007-01-29T00:49:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-207.63.251.215-2007-02-05T18:59:00.000Z-71.235.17.165-2007-01-29T00:49:00.000Z"></span></dd></dl> <dl><dd>do you think there would have been any appliance if it weren't for resistance? I do not think so. what is your point?</dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Temperature?" data-mw-thread-id="h-Temperature?-2007-02-05T19:00:00.000Z"><span id="Temperature.3F"></span><span data-mw-comment-start="" id="h-Temperature?-2007-02-05T19:00:00.000Z"></span>Temperature?<span data-mw-comment-end="h-Temperature?-2007-02-05T19:00:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=7" title="Edit section: Temperature?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-207.63.251.215-2007-02-05T19:00:00.000Z-Temperature?"></span>Now how does temperature effect resistance? No math, just explain how it works. Pls and thx.<a href="/w/index.php?title=User:207.63.251.215&action=edit&redlink=1" class="new" title="User:207.63.251.215 (page does not exist)">207.63.251.215</a> 19:00, 5 February 2007 (UTC) Temperature affects the micro-vibration of the ions within the conductor. The more the ions vibrate, the more electrons are dissipated due to the effect discussed in the article. <a href="/wiki/User:Matwilko" title="User:Matwilko">Matwilko</a> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-207.63.251.215-2007-02-05T19:00:00.000Z-Temperature?" class="ext-discussiontools-init-timestamplink">00:55, 20 February 2007 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-207.63.251.215-2007-02-05T19:00:00.000Z-Temperature?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-207.63.251.215-2007-02-05T19:00:00.000Z-Temperature?"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="U-I_Graph?" data-mw-thread-id="h-U-I_Graph?-2008-05-01T17:54:00.000Z"><span id="U-I_Graph.3F"></span><span data-mw-comment-start="" id="h-U-I_Graph?-2008-05-01T17:54:00.000Z"></span>U-I Graph?<span data-mw-comment-end="h-U-I_Graph?-2008-05-01T17:54:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=8" title="Edit section: U-I Graph?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Billgordon1099-2008-05-01T17:54:00.000Z-U-I_Graph?"></span>The negative resistance section refers to the U-I graph. Shouldn't this be V-I graph? (voltage vs current)? <a href="/wiki/User:Billgordon1099" title="User:Billgordon1099">Billgordon1099</a> (<a href="/wiki/User_talk:Billgordon1099" title="User talk:Billgordon1099">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Billgordon1099-2008-05-01T17:54:00.000Z-U-I_Graph?" class="ext-discussiontools-init-timestamplink">17:54, 1 May 2008 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Billgordon1099-2008-05-01T17:54:00.000Z-U-I_Graph?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Billgordon1099-2008-05-01T17:54:00.000Z-U-I_Graph?"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-TomyDuby-2008-08-10T05:09:00.000Z-Billgordon1099-2008-05-01T17:54:00.000Z"></span>Yes, you are right, it should be a V-I graph. But even this is not good enough: In semiconductors (for example <a href="/wiki/Diodes" class="mw-redirect" title="Diodes">diodes</a>) one typically uses the term <i>I-V characteristics</i>. <a href="/wiki/User:TomyDuby" title="User:TomyDuby">TomyDuby</a> (<a href="/wiki/User_talk:TomyDuby" title="User talk:TomyDuby">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-TomyDuby-2008-08-10T05:09:00.000Z-Billgordon1099-2008-05-01T17:54:00.000Z" class="ext-discussiontools-init-timestamplink">05:09, 10 August 2008 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-TomyDuby-2008-08-10T05:09:00.000Z-Billgordon1099-2008-05-01T17:54:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-TomyDuby-2008-08-10T05:09:00.000Z-Billgordon1099-2008-05-01T17:54:00.000Z"></span></dd></dl> <p><span data-mw-comment-start="" id="c-78.61.66.75-2009-09-30T23:27:00.000Z-U-I_Graph?"></span>Why? in that case it must be V-C not V-I it is most likly some misprint since V looks like U <span style="font-size: smaller;" class="autosigned">—Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/wiki/Special:Contributions/78.61.66.75" title="Special:Contributions/78.61.66.75">78.61.66.75</a> (<a href="/wiki/User_talk:78.61.66.75" title="User talk:78.61.66.75">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-78.61.66.75-2009-09-30T23:27:00.000Z-U-I_Graph?" class="ext-discussiontools-init-timestamplink">23:27, 30 September 2009 (UTC)</a></span><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-78.61.66.75-2009-09-30T23:27:00.000Z-U-I_Graph?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-78.61.66.75-2009-09-30T23:27:00.000Z-U-I_Graph?"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Gunnar.Kaestle-2020-02-23T14:58:00.000Z-78.61.66.75-2009-09-30T23:27:00.000Z"></span>The <a rel="nofollow" class="external text" href="http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-11-27">symbol for voltage</a> is U, whereas the unit is V as abbreviation for Volt. Quite a few people use V also as symbol, but this causes misinterpretations, as the unit has the same letter. --<a href="/wiki/User:Gunnar.Kaestle" title="User:Gunnar.Kaestle">Gunnar</a> (<a href="/wiki/User_talk:Gunnar.Kaestle" title="User talk:Gunnar.Kaestle">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Gunnar.Kaestle-2020-02-23T14:58:00.000Z-78.61.66.75-2009-09-30T23:27:00.000Z" class="ext-discussiontools-init-timestamplink">14:58, 23 February 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gunnar.Kaestle-2020-02-23T14:58:00.000Z-78.61.66.75-2009-09-30T23:27:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gunnar.Kaestle-2020-02-23T14:58:00.000Z-78.61.66.75-2009-09-30T23:27:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Capitalization" data-mw-thread-id="h-Capitalization-2008-07-02T18:43:00.000Z"><span data-mw-comment-start="" id="h-Capitalization-2008-07-02T18:43:00.000Z"></span>Capitalization<span data-mw-comment-end="h-Capitalization-2008-07-02T18:43:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=9" title="Edit section: Capitalization"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Jcarroll-2008-07-02T18:43:00.000Z-Capitalization"></span>According to the <a rel="nofollow" class="external text" href="http://physics.nist.gov/Pubs/SP811/sec06.html">NIST Guide to SI Units</a>: </p> <dl><dd>6.1.2 Capitalization</dd> <dd>Unit symbols are printed in lower-case letters except that:</dd> <dd>(a) the symbol or the first letter of the symbol is an <b>upper-case letter when the name of the unit is derived from the name of a person</b>...</dd></dl> <p>Since the unit for resistance (the Ohm) is taken from Georg Ohm, shouldn't the unit be capitalized in all Wikipedia articles? <small>—Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/wiki/User:Jcarroll" title="User:Jcarroll">Jcarroll</a> (<a href="/wiki/User_talk:Jcarroll" title="User talk:Jcarroll">talk</a> • <a href="/wiki/Special:Contributions/Jcarroll" title="Special:Contributions/Jcarroll">contribs</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Jcarroll-2008-07-02T18:43:00.000Z-Capitalization" class="ext-discussiontools-init-timestamplink">18:43, 2 July 2008 (UTC)</a></small><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Jcarroll-2008-07-02T18:43:00.000Z-Capitalization"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Jcarroll-2008-07-02T18:43:00.000Z-Capitalization"></span> </p><p><span data-mw-comment-start="" id="c-68.0.124.33-2009-02-23T01:44:00.000Z-Capitalization"></span>Yes, the "unit symbol" should be capitalized, but not the "unit name". I agree that it would be more consistent to make both the name and the symbol uppercase for all SI units named after a person. Alas, that's not what the standard says. </p><p>My reading of the guide you mentioned (in particular the section on <a rel="nofollow" class="external text" href="http://physics.nist.gov/Pubs/SP811/sec09.html">"Rules and Style Conventions for Spelling Unit Names"</a>) implies that: </p> <ul><li>The "unit symbol" for resistance (Ω) should be uppercase.</li> <li>The "unit name" for resistance (ohm) should be lowercase.</li></ul> <p>That "NIST Guide to SI" seems consistent with the <a href="/wiki/Wikipedia:Manual_of_Style_(dates_and_numbers)#Unit_symbols" class="mw-redirect" title="Wikipedia:Manual of Style (dates and numbers)">Wikipedia:Manual of Style (dates and numbers)#Unit symbols</a> here, which says </p> <ul><li>Units named after persons are not capitalized when written in full (write <i>A pascal is a unit of pressure</i>, not <i>A Pascal is a unit of pressure</i>). This does not apply to "degree Celsius" and "degree Fahrenheit".</li></ul> <p>and is also consistent with the <a href="/wiki/International_System_of_Units" title="International System of Units">International System of Units</a> article, which says </p> <ul><li>Symbols for units are written in <a href="/wiki/Lower_case" class="mw-redirect" title="Lower case">lower case</a>, except for symbols derived from the name of a person. For example, the unit of <a href="/wiki/Pressure" title="Pressure">pressure</a> is named after <a href="/wiki/Blaise_Pascal" title="Blaise Pascal">Blaise Pascal</a>, so its symbol is written "Pa", whereas the <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> itself is written "<a href="/wiki/Pascal_(unit)" title="Pascal (unit)">pascal</a>". ...</li></ul> <p>--<a href="/wiki/Special:Contributions/68.0.124.33" title="Special:Contributions/68.0.124.33">68.0.124.33</a> (<a href="/wiki/User_talk:68.0.124.33" title="User talk:68.0.124.33">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-68.0.124.33-2009-02-23T01:44:00.000Z-Capitalization" class="ext-discussiontools-init-timestamplink">01:44, 23 February 2009 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-68.0.124.33-2009-02-23T01:44:00.000Z-Capitalization"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-68.0.124.33-2009-02-23T01:44:00.000Z-Capitalization"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Deletion_proposal" data-mw-thread-id="h-Deletion_proposal-2009-06-20T06:26:00.000Z"><span data-mw-comment-start="" id="h-Deletion_proposal-2009-06-20T06:26:00.000Z"></span>Deletion proposal<span data-mw-comment-end="h-Deletion_proposal-2009-06-20T06:26:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=10" title="Edit section: Deletion proposal"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Destroyer000-2009-06-20T06:26:00.000Z-Deletion_proposal"></span>I request that this page be removed from Wikipedia, or at least, merged into <a href="/wiki/Ohm%27s_Law" class="mw-redirect" title="Ohm's Law">Ohm's Law</a> or something of that nature. It hasn't got a single source and there are several other articles discussing the same facts about electrical resistance. I am more than happy to discuss this issue... I will reply to your thoughts more promptly if you leave your post on my talk page and this section. <a href="/wiki/User:Destroyer000" title="User:Destroyer000">Destroyer000</a> (<a href="/wiki/User_talk:Destroyer000" title="User talk:Destroyer000">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Destroyer000-2009-06-20T06:26:00.000Z-Deletion_proposal" class="ext-discussiontools-init-timestamplink">06:26, 20 June 2009 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Destroyer000-2009-06-20T06:26:00.000Z-Deletion_proposal"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Destroyer000-2009-06-20T06:26:00.000Z-Deletion_proposal"></span> </p><p><span data-mw-comment-start="" id="c-71.104.232.71-2009-06-20T15:27:00.000Z-Deletion_proposal"></span>I think this page should definitely be kept. With a concept as fundamental as electrical resistance, you're bound to have lots of pages that make reference to it. That other pages also discuss electrical resistance and give brief explanations as to what it is does not mean that there shouldn't be a central location where information on this topic can be easily found. Furthermore, <a href="/wiki/Ohm%27s_Law" class="mw-redirect" title="Ohm's Law">Ohm's Law</a> and electrical resistance are two distinct concepts. One is describing the relationship between voltage, resistance, and current; the other is the concept of electrical resistance itself. If electrical resistance should be deleted, then so should electrical current and voltage. Or perhaps Ohm's Law should be deleted, since its information is repeated on all 3 of the other pages. </p><p>I also see 7 sources directly cited on the page. There is quite a lot of useful information found here. So the quality of the page is not grounds for deletion. Lastly, Wikipedia has no lack of storage space, and it does not need to be normalized at the cost of de-optimization. Just because all the information contained here can also be found on various other pages doesn't mean users researching electrical resistance should have to scour 10-20 different pages to find all of this information. Instead, a comprehensive page on electrical resistance itself is both better organized and more intuitive to users. --<a href="/wiki/Special:Contributions/71.104.232.71" title="Special:Contributions/71.104.232.71">71.104.232.71</a> (<a href="/wiki/User_talk:71.104.232.71" title="User talk:71.104.232.71">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-71.104.232.71-2009-06-20T15:27:00.000Z-Deletion_proposal" class="ext-discussiontools-init-timestamplink">15:27, 20 June 2009 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-71.104.232.71-2009-06-20T15:27:00.000Z-Deletion_proposal"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-71.104.232.71-2009-06-20T15:27:00.000Z-Deletion_proposal"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-CosineKitty-2010-01-25T14:34:00.000Z-71.104.232.71-2009-06-20T15:27:00.000Z"></span>Another thing to consider: Ohm's Law does not always apply. For example, a device like a silicon <a href="/wiki/Diode" title="Diode">diode</a> has electrical resistance, but the relationship between voltage and current is not linear. Both articles should remain. <a href="/wiki/User:CosineKitty" title="User:CosineKitty">CosineKitty</a> (<a href="/wiki/User_talk:CosineKitty" title="User talk:CosineKitty">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-CosineKitty-2010-01-25T14:34:00.000Z-71.104.232.71-2009-06-20T15:27:00.000Z" class="ext-discussiontools-init-timestamplink">14:34, 25 January 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-CosineKitty-2010-01-25T14:34:00.000Z-71.104.232.71-2009-06-20T15:27:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-CosineKitty-2010-01-25T14:34:00.000Z-71.104.232.71-2009-06-20T15:27:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="English_variations" data-mw-thread-id="h-English_variations-2010-01-23T16:15:00.000Z"><span data-mw-comment-start="" id="h-English_variations-2010-01-23T16:15:00.000Z"></span>English variations<span data-mw-comment-end="h-English_variations-2010-01-23T16:15:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=11" title="Edit section: English variations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-CosineKitty-2010-01-23T16:15:00.000Z-English_variations"></span>I am restoring this article to American spelling based on <a href="/wiki/Wikipedia:ENGVAR" class="mw-redirect" title="Wikipedia:ENGVAR">WP:ENGVAR</a>. This topic is not tied to a particular country. <s>Also, I went back through the entire edit history and the earliest conflict between British/American spelling was <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Electrical_resistance&diff=next&oldid=18960617">this one</a> from 22 July 2005. That predates the cited revision <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Electrical_resistance&oldid=41307060">41307060</a>, which was made on 26 February 2006. The <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Electrical_resistance&diff=next&oldid=41307060">revision that changed it back to American spelling</a> was not explained, but it was correct based on <a href="/wiki/Wikipedia:ENGVAR" class="mw-redirect" title="Wikipedia:ENGVAR">WP:ENGVAR</a>.</s> <a href="/wiki/User:CosineKitty" title="User:CosineKitty">CosineKitty</a> (<a href="/wiki/User_talk:CosineKitty" title="User talk:CosineKitty">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-CosineKitty-2010-01-23T16:15:00.000Z-English_variations" class="ext-discussiontools-init-timestamplink">16:15, 23 January 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-CosineKitty-2010-01-23T16:15:00.000Z-English_variations"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-CosineKitty-2010-01-23T16:15:00.000Z-English_variations"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-CapitalLetterBeginning-2010-01-24T15:13:00.000Z-CosineKitty-2010-01-23T16:15:00.000Z"></span>The earliest revision to feature the word <i>metre</i>/<i>meter</i> is <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Electrical_resistance&oldid=7074365">this one</a> by <a href="/wiki/User:Icairns" title="User:Icairns">Icairns</a> on 29 October 2004, in which the former spelling is used. –<a href="/wiki/User:CapitalLetterBeginning" title="User:CapitalLetterBeginning">CapitalLetterBeginning</a> (<a href="/wiki/User_talk:CapitalLetterBeginning" title="User talk:CapitalLetterBeginning">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-CapitalLetterBeginning-2010-01-24T15:13:00.000Z-CosineKitty-2010-01-23T16:15:00.000Z" class="ext-discussiontools-init-timestamplink">15:13, 24 January 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-CapitalLetterBeginning-2010-01-24T15:13:00.000Z-CosineKitty-2010-01-23T16:15:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-CapitalLetterBeginning-2010-01-24T15:13:00.000Z-CosineKitty-2010-01-23T16:15:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-CosineKitty-2010-01-24T20:48:00.000Z-CapitalLetterBeginning-2010-01-24T15:13:00.000Z"></span>Oops! You are right. Sorry about that. I will put it back the way you had it. (Strike-out added above by myself.) <a href="/wiki/User:CosineKitty" title="User:CosineKitty">CosineKitty</a> (<a href="/wiki/User_talk:CosineKitty" title="User talk:CosineKitty">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-CosineKitty-2010-01-24T20:48:00.000Z-CapitalLetterBeginning-2010-01-24T15:13:00.000Z" class="ext-discussiontools-init-timestamplink">20:48, 24 January 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-CosineKitty-2010-01-24T20:48:00.000Z-CapitalLetterBeginning-2010-01-24T15:13:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-CosineKitty-2010-01-24T20:48:00.000Z-CapitalLetterBeginning-2010-01-24T15:13:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-CapitalLetterBeginning-2010-01-25T14:05:00.000Z-CosineKitty-2010-01-24T20:48:00.000Z"></span>Thank you. –<a href="/wiki/User:CapitalLetterBeginning" title="User:CapitalLetterBeginning">CapitalLetterBeginning</a> (<a href="/wiki/User_talk:CapitalLetterBeginning" title="User talk:CapitalLetterBeginning">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-CapitalLetterBeginning-2010-01-25T14:05:00.000Z-CosineKitty-2010-01-24T20:48:00.000Z" class="ext-discussiontools-init-timestamplink">14:05, 25 January 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-CapitalLetterBeginning-2010-01-25T14:05:00.000Z-CosineKitty-2010-01-24T20:48:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-CapitalLetterBeginning-2010-01-25T14:05:00.000Z-CosineKitty-2010-01-24T20:48:00.000Z"></span></dd></dl></dd></dl></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Fermi_Level" data-mw-thread-id="h-Fermi_Level-2010-02-03T01:45:00.000Z"><span data-mw-comment-start="" id="h-Fermi_Level-2010-02-03T01:45:00.000Z"></span>Fermi Level<span data-mw-comment-end="h-Fermi_Level-2010-02-03T01:45:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=12" title="Edit section: Fermi Level"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Snirm-2010-02-03T01:45:00.000Z-Fermi_Level"></span>This term is used twice, but never defined <small><span class="autosigned">—Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/w/index.php?title=User:Snirm&action=edit&redlink=1" class="new" title="User:Snirm (page does not exist)">Snirm</a> (<a href="/w/index.php?title=User_talk:Snirm&action=edit&redlink=1" class="new" title="User talk:Snirm (page does not exist)">talk</a> • <a href="/wiki/Special:Contributions/Snirm" title="Special:Contributions/Snirm">contribs</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Snirm-2010-02-03T01:45:00.000Z-Fermi_Level" class="ext-discussiontools-init-timestamplink">01:45, 3 February 2010 (UTC)</a></span></small><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Snirm-2010-02-03T01:45:00.000Z-Fermi_Level"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Snirm-2010-02-03T01:45:00.000Z-Fermi_Level"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-CosineKitty-2010-02-03T01:53:00.000Z-Snirm-2010-02-03T01:45:00.000Z"></span>It turns out there is a <a href="/wiki/Fermi_level" title="Fermi level">Fermi level</a> article. I linked to it from the article text. Maybe that will help some. <a href="/wiki/User:CosineKitty" title="User:CosineKitty">CosineKitty</a> (<a href="/wiki/User_talk:CosineKitty" title="User talk:CosineKitty">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-CosineKitty-2010-02-03T01:53:00.000Z-Snirm-2010-02-03T01:45:00.000Z" class="ext-discussiontools-init-timestamplink">01:53, 3 February 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-CosineKitty-2010-02-03T01:53:00.000Z-Snirm-2010-02-03T01:45:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-CosineKitty-2010-02-03T01:53:00.000Z-Snirm-2010-02-03T01:45:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Suggest_merge" data-mw-thread-id="h-Suggest_merge-2010-12-13T15:26:00.000Z"><span data-mw-comment-start="" id="h-Suggest_merge-2010-12-13T15:26:00.000Z"></span>Suggest merge<span data-mw-comment-end="h-Suggest_merge-2010-12-13T15:26:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=13" title="Edit section: Suggest merge"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Wtshymanski-2010-12-13T15:26:00.000Z-Suggest_merge"></span>Merge to <a href="/wiki/Electrical_conductivity" class="mw-redirect" title="Electrical conductivity">Electrical conductivity</a>; it's a reciprocal relationship and does not need to duplicate all the discussion there. --<a href="/wiki/User:Wtshymanski" title="User:Wtshymanski">Wtshymanski</a> (<a href="/wiki/User_talk:Wtshymanski" title="User talk:Wtshymanski">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Wtshymanski-2010-12-13T15:26:00.000Z-Suggest_merge" class="ext-discussiontools-init-timestamplink">15:26, 13 December 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Wtshymanski-2010-12-13T15:26:00.000Z-Suggest_merge"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Wtshymanski-2010-12-13T15:26:00.000Z-Suggest_merge"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-No_such_user-2010-12-14T09:11:00.000Z-Wtshymanski-2010-12-13T15:26:00.000Z"></span>Well, not exactly. There are actually <b>four</b> articles: <ol><li><a href="/wiki/Electrical_resistance" class="mw-redirect" title="Electrical resistance">Electrical resistance</a></li> <li><a href="/wiki/Electrical_conductance" class="mw-redirect" title="Electrical conductance">Electrical conductance</a></li> <li><a href="/wiki/Electrical_resistivity" class="mw-redirect" title="Electrical resistivity">Electrical resistivity</a></li> <li><a href="/wiki/Electrical_conductivity" class="mw-redirect" title="Electrical conductivity">Electrical conductivity</a></li></ol></dd> <dd>The latter two describe the material's inherent property to resist current, while the former two describe the equations when applied to concrete geometry. In my opinion, 1 and 2 should be mutually merged, as well as 3 and 4 (because they're reciprocal relationships indeed)-- but not 1 and 4. Personally, I would prefer them under "resist*" titles, since those concepts are slightly better known and used in electric engineering, though I wouldn't mind the other way round either (or under compound titles such as "Electric resistance and conductance") <a href="/wiki/User:No_such_user" class="mw-redirect" title="User:No such user">No such user</a> (<a href="/wiki/User_talk:No_such_user" title="User talk:No such user">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-No_such_user-2010-12-14T09:11:00.000Z-Wtshymanski-2010-12-13T15:26:00.000Z" class="ext-discussiontools-init-timestamplink">09:11, 14 December 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-No_such_user-2010-12-14T09:11:00.000Z-Wtshymanski-2010-12-13T15:26:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-No_such_user-2010-12-14T09:11:00.000Z-Wtshymanski-2010-12-13T15:26:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Wtshymanski-2010-12-14T14:18:00.000Z-No_such_user-2010-12-14T09:11:00.000Z"></span>At least that much merging, but I think the reader's interests would be better served by one article on electrical conduction, with about a paragraph explanation for each of these other terms. Better to put all our carefully annotated brilliant prose describing the physics of conduction bands and Fermi levels in one place, rather than scattering it through four articles with mutually contradictory and incomplete descriptions. --<a href="/wiki/User:Wtshymanski" title="User:Wtshymanski">Wtshymanski</a> (<a href="/wiki/User_talk:Wtshymanski" title="User talk:Wtshymanski">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Wtshymanski-2010-12-14T14:18:00.000Z-No_such_user-2010-12-14T09:11:00.000Z" class="ext-discussiontools-init-timestamplink">14:18, 14 December 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Wtshymanski-2010-12-14T14:18:00.000Z-No_such_user-2010-12-14T09:11:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Wtshymanski-2010-12-14T14:18:00.000Z-No_such_user-2010-12-14T09:11:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-No_such_user-2010-12-14T15:48:00.000Z-Wtshymanski-2010-12-14T14:18:00.000Z"></span>On reflection, you're probably right. Still, I wouldn't put <a href="/wiki/Electric_conduction" class="mw-redirect" title="Electric conduction">electric conduction</a> into this equation, although it might be mergeable with <a href="/wiki/Electric_current" title="Electric current">electric current</a>. <a href="/wiki/User:No_such_user" class="mw-redirect" title="User:No such user">No such user</a> (<a href="/wiki/User_talk:No_such_user" title="User talk:No such user">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-No_such_user-2010-12-14T15:48:00.000Z-Wtshymanski-2010-12-14T14:18:00.000Z" class="ext-discussiontools-init-timestamplink">15:48, 14 December 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-No_such_user-2010-12-14T15:48:00.000Z-Wtshymanski-2010-12-14T14:18:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-No_such_user-2010-12-14T15:48:00.000Z-Wtshymanski-2010-12-14T14:18:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-DavidCary-2011-01-22T17:37:00.000Z-No_such_user-2010-12-14T15:48:00.000Z"></span>I agree with "No such user" -- let's go ahead and merge 1 and 2 into one article now, and 2 and 3 into another article now. Likewise, I don't particularly care which title is used.</dd> <dd>Later, after we've reduced these 4 articles to 2 articles, then we can talk about the possibility of further merging. --<a href="/wiki/User:DavidCary" title="User:DavidCary">DavidCary</a> (<a href="/wiki/User_talk:DavidCary" title="User talk:DavidCary">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-DavidCary-2011-01-22T17:37:00.000Z-No_such_user-2010-12-14T15:48:00.000Z" class="ext-discussiontools-init-timestamplink">17:37, 22 January 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-DavidCary-2011-01-22T17:37:00.000Z-No_such_user-2010-12-14T15:48:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-DavidCary-2011-01-22T17:37:00.000Z-No_such_user-2010-12-14T15:48:00.000Z"></span></dd></dl></dd></dl></dd></dl></dd></dl> <p><span data-mw-comment-start="" id="c-Sbyrnes321-2011-01-22T18:09:00.000Z-Suggest_merge"></span>I agree with No such user: Merge 1 with 2 and 3 with 4. I personally would prefer the compound titles, otherwise some editor will probably re-start the articles that we are deleting. Actually I think the ideal solution in this case would be to separately improve all of the articles, copying-and-pasting sections as necessary...but that's harder to do and harder to maintain. No merging with <a href="/wiki/Electric_conduction" class="mw-redirect" title="Electric conduction">electric conduction</a>, it's different. --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2011-01-22T18:09:00.000Z-Suggest_merge" class="ext-discussiontools-init-timestamplink">18:09, 22 January 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2011-01-22T18:09:00.000Z-Suggest_merge"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2011-01-22T18:09:00.000Z-Suggest_merge"></span> </p><p><span data-mw-comment-start="" id="c-Pcardout-2011-01-23T01:28:00.000Z-Suggest_merge"></span>I would like to register another vote for merging Electrical resistance with electrical conductance and Electrical resistivity with electrical conductivity. I teach electricity and magnetism at the freshman, junior, and graduate level. My doctorate is in solid-state physics. I concur with the discussion that resistivity and conductivity can be considered about intrinsic material properties and responses of materials to temperature, doping, etc. Resistance and conductance are linearly dependent on resistivity and conductivity, but they can be considered as properties of electrical components, or of electrical measurements with a fixed geometry. All the concepts are so basic and so widely useful that a single article would be perhaps too long. At the same time, it does seem silly to have separate articles on quantities that are reciprocals of eachother. There are certain "users" of resistivity vs. conductivity measurements. It seems chemists and water-quality people like conductivity, for example, while electrical engineers might be more likely to use resistivity. This can be pointed out in the merged articles. </p><p>I also support maintaining the "Electrical" before the other terms. Equations for thermal conductance and conductance of pipes to water flow (see Hydraulic analogy) are essentially identical to Ohm's law, but they are used by different people and there are different measurements to characterize them, so it is better IMHO not to just have one article called "conductance" which would then have to cover far too much material. <a href="/w/index.php?title=User:Pcardout&action=edit&redlink=1" class="new" title="User:Pcardout (page does not exist)">Pcardout</a> (<a href="/w/index.php?title=User_talk:Pcardout&action=edit&redlink=1" class="new" title="User talk:Pcardout (page does not exist)">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Pcardout-2011-01-23T01:28:00.000Z-Suggest_merge" class="ext-discussiontools-init-timestamplink">01:28, 23 January 2011 (UTC)</a> (see "hydraulic analogy")<span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Pcardout-2011-01-23T01:28:00.000Z-Suggest_merge"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Pcardout-2011-01-23T01:28:00.000Z-Suggest_merge"></span> </p> <div class="mw-heading mw-heading3"><h3 id="Merged" data-mw-thread-id="h-Merged-Suggest_merge-2011-01-24T12:00:00.000Z"><span data-mw-comment-start="" id="h-Merged-Suggest_merge-2011-01-24T12:00:00.000Z"></span>Merged<span data-mw-comment-end="h-Merged-Suggest_merge-2011-01-24T12:00:00.000Z"></span></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=14" title="Edit section: Merged"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span data-mw-comment-start="" id="c-No_such_user-2011-01-24T12:00:00.000Z-Merged"></span>I merged <a href="/wiki/Electrical_resistance" class="mw-redirect" title="Electrical resistance">Electrical resistance</a> and <a href="/wiki/Electrical_conductance" class="mw-redirect" title="Electrical conductance">Electrical conductance</a> into <a href="/wiki/Electrical_resistance_and_conductance" title="Electrical resistance and conductance">Electrical resistance and conductance</a>, as well as <a href="/wiki/Electrical_resistivity" class="mw-redirect" title="Electrical resistivity">Electrical resistivity</a> and <a href="/wiki/Electrical_conductivity" class="mw-redirect" title="Electrical conductivity">Electrical conductivity</a> into <a href="/wiki/Electrical_resistivity_and_conductivity" title="Electrical resistivity and conductivity">Electrical resistivity and conductivity</a>. While further merging is perhaps possible, I felt that this is not the current consensus, and that the resulting article could be overlong. Take it on from here. </p><p>There are probably more candidates for similar merging, such as <a href="/wiki/Electrical_impedance" title="Electrical impedance">Electrical impedance</a> and <a href="/wiki/Admittance" title="Admittance">admittance</a>, or <a href="/wiki/Electrical_reactance" title="Electrical reactance">Electrical reactance</a> and <a href="/wiki/Susceptance" title="Susceptance">Susceptance</a>. Later... <a href="/wiki/User:No_such_user" class="mw-redirect" title="User:No such user">No such user</a> (<a href="/wiki/User_talk:No_such_user" title="User talk:No such user">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-No_such_user-2011-01-24T12:00:00.000Z-Merged" class="ext-discussiontools-init-timestamplink">12:00, 24 January 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-No_such_user-2011-01-24T12:00:00.000Z-Merged"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-No_such_user-2011-01-24T12:00:00.000Z-Merged"></span> </p><p><br/> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Resistance_matrix_and_conductance_matrix" data-mw-thread-id="h-Resistance_matrix_and_conductance_matrix-2011-02-24T01:33:00.000Z"><span data-mw-comment-start="" id="h-Resistance_matrix_and_conductance_matrix-2011-02-24T01:33:00.000Z"></span>Resistance matrix and conductance matrix<span data-mw-comment-end="h-Resistance_matrix_and_conductance_matrix-2011-02-24T01:33:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=15" title="Edit section: Resistance matrix and conductance matrix"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-老陳-2011-02-24T01:33:00.000Z-Resistance_matrix_and_conductance_matrix"></span>Is it a good idea to include resistance matrix and conductance matrix in the article?--<a href="/wiki/User:%E8%80%81%E9%99%B3" title="User:老陳">LaoChen</a> (<a href="/wiki/User_talk:%E8%80%81%E9%99%B3" title="User talk:老陳">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-老陳-2011-02-24T01:33:00.000Z-Resistance_matrix_and_conductance_matrix" class="ext-discussiontools-init-timestamplink">01:33, 24 February 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-老陳-2011-02-24T01:33:00.000Z-Resistance_matrix_and_conductance_matrix"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-老陳-2011-02-24T01:33:00.000Z-Resistance_matrix_and_conductance_matrix"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-No_such_user-2011-02-24T07:34:00.000Z-老陳-2011-02-24T01:33:00.000Z"></span>No, it is too specific subject. However, we do have an article <a href="/wiki/Nodal_admittance_matrix" title="Nodal admittance matrix">Nodal admittance matrix</a>, which is in a very poor shape, and should be more prominently linked. <a href="/wiki/User:No_such_user" class="mw-redirect" title="User:No such user">No such user</a> (<a href="/wiki/User_talk:No_such_user" title="User talk:No such user">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-No_such_user-2011-02-24T07:34:00.000Z-老陳-2011-02-24T01:33:00.000Z" class="ext-discussiontools-init-timestamplink">07:34, 24 February 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-No_such_user-2011-02-24T07:34:00.000Z-老陳-2011-02-24T01:33:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-No_such_user-2011-02-24T07:34:00.000Z-老陳-2011-02-24T01:33:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="More_merging" data-mw-thread-id="h-More_merging-2011-08-11T16:02:00.000Z"><span data-mw-comment-start="" id="h-More_merging-2011-08-11T16:02:00.000Z"></span>More merging<span data-mw-comment-end="h-More_merging-2011-08-11T16:02:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=16" title="Edit section: More merging"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Wtshymanski-2011-08-11T16:02:00.000Z-More_merging"></span>Somone pulled the template off at <a href="/wiki/Electrical_resistivity_and_conductivity" title="Electrical resistivity and conductivity">Electrical resistivity and conductivity</a>. I very much doubt the treatment of the subject on Wikipedia will be subtle enough to need two articles covering the same material, and I suggest they be merged. --<a href="/wiki/User:Wtshymanski" title="User:Wtshymanski">Wtshymanski</a> (<a href="/wiki/User_talk:Wtshymanski" title="User talk:Wtshymanski">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Wtshymanski-2011-08-11T16:02:00.000Z-More_merging" class="ext-discussiontools-init-timestamplink">16:02, 11 August 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Wtshymanski-2011-08-11T16:02:00.000Z-More_merging"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Wtshymanski-2011-08-11T16:02:00.000Z-More_merging"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Conductance" data-mw-thread-id="h-Conductance-2011-11-28T17:45:00.000Z"><span data-mw-comment-start="" id="h-Conductance-2011-11-28T17:45:00.000Z"></span>Conductance<span data-mw-comment-end="h-Conductance-2011-11-28T17:45:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=17" title="Edit section: Conductance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-129.187.181.11-2011-11-28T17:45:00.000Z-Conductance"></span>The beginning of the article calls the conductance the "the inverse quantity" of the resistance. Later it is written that: "For purely resistive circuits conductance is related to resistance R by G=1/R. For practical reasons, any connections to a real conductor will almost certainly mean the current density is not totally uniform. However, this formula still provides a good approximation for long thin conductors such as wires." How is the conductance defined, if not by G=1/R? Why should this depend on whether the circuit is purely resistive (if you think about capacitors and inductances: Admittance is _defined_ as the inverse of the impedance)? How is a non-uniform current density related to this definition (R is by definition an average quantity. Can one even define a "local" resistivity?)? Is the relation G=1/R wrong for "thick" conductors? <span style="font-size: smaller;" class="autosigned">— Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/wiki/Special:Contributions/129.187.181.11" title="Special:Contributions/129.187.181.11">129.187.181.11</a> (<a href="/wiki/User_talk:129.187.181.11" title="User talk:129.187.181.11">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-129.187.181.11-2011-11-28T17:45:00.000Z-Conductance" class="ext-discussiontools-init-timestamplink">17:45, 28 November 2011 (UTC)</a></span><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-129.187.181.11-2011-11-28T17:45:00.000Z-Conductance"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-129.187.181.11-2011-11-28T17:45:00.000Z-Conductance"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Spinningspark-2011-11-30T22:35:00.000Z-129.187.181.11-2011-11-28T17:45:00.000Z"></span>This must be referring to the expresion of resistance in terms of resistivity and not the the formula R=1/G. Probably got separated in the process of merging resistance and conductance articles. <b><a href="/wiki/User:Spinningspark" title="User:Spinningspark"><span style="background:#fafad2; color:#C08000;">Spinning</span></a><a href="/wiki/User_talk:Spinningspark" title="User talk:Spinningspark"><span style="color:#4840a0;">Spark</span></a></b> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Spinningspark-2011-11-30T22:35:00.000Z-129.187.181.11-2011-11-28T17:45:00.000Z" class="ext-discussiontools-init-timestamplink">22:35, 30 November 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Spinningspark-2011-11-30T22:35:00.000Z-129.187.181.11-2011-11-28T17:45:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Spinningspark-2011-11-30T22:35:00.000Z-129.187.181.11-2011-11-28T17:45:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Sources_of_resistance_in_metals???" data-mw-thread-id="h-Sources_of_resistance_in_metals???-2011-12-07T16:54:00.000Z"><span id="Sources_of_resistance_in_metals.3F.3F.3F"></span><span data-mw-comment-start="" id="h-Sources_of_resistance_in_metals???-2011-12-07T16:54:00.000Z"></span>Sources of resistance in metals???<span data-mw-comment-end="h-Sources_of_resistance_in_metals???-2011-12-07T16:54:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=18" title="Edit section: Sources of resistance in metals???"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Eranus-2011-12-07T16:54:00.000Z-Sources_of_resistance_in_metals???"></span>The article state "The larger the cross-sectional area of the conductor, the more electrons are available to carry the current, so the lower the resistance." I'm not an expert on the subject but this does not seem like the proper reasoning to me. There are indeed more electrons, but the are also more ions in the lattice to scatter them. I always thought it is a surface effect. I thought the abrupt ending of the organized lattice at the surface is a cause for resistance. Though the surface becomes larges as the cross-sectional area of the conductor increases, it does so slower than the area of the conductor (for instance for a circular cross-section the surface increase like 2*pi*r while the area increase like pi*r^2. Can an expert look into this. Maybe it is better to remove the sentence in the meantime? </p><p>In addition is the room for the highschool formula in this section?<a href="/w/index.php?title=User:Eranus&action=edit&redlink=1" class="new" title="User:Eranus (page does not exist)">Eranus</a> (<a href="/w/index.php?title=User_talk:Eranus&action=edit&redlink=1" class="new" title="User talk:Eranus (page does not exist)">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Eranus-2011-12-07T16:54:00.000Z-Sources_of_resistance_in_metals???" class="ext-discussiontools-init-timestamplink">16:54, 7 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Eranus-2011-12-07T16:54:00.000Z-Sources_of_resistance_in_metals???"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Eranus-2011-12-07T16:54:00.000Z-Sources_of_resistance_in_metals???"></span> </p><p><span data-mw-comment-start="" id="c-Sbyrnes321-2011-12-07T18:19:00.000Z-Sources_of_resistance_in_metals???"></span>R=rho*l/A </p> <dl><dd>It's correct as written. More electrons means each electron only needs to travel half as fast to carry the same current. So each time they scatter, they lose less energy.</dd> <dd>Let's say a wire is a cylinder. It has round walls along the length and flat walls at the ends. I'm not sure which surface you're referring to as being important.</dd> <dd>The round walls are the source of "surface scattering", but surface scattering is only important if the wire is very small, like 10 nanometers in diameter. For a macroscopic wire, surface scattering is negligible, and that's why the resistance is inversely proportional to cross-sectional area not cross-sectional circumference.</dd> <dd>The flat walls at the ends can be important too, scattering there would be classified as a type of "contact resistance". When you discuss the resistance of a wire, it usually implicitly excludes the effect of contact resistance.</dd> <dd>The formula relating resistivity to resistance is already in the article, isn't it? --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2011-12-07T18:19:00.000Z-Sources_of_resistance_in_metals???" class="ext-discussiontools-init-timestamplink">18:19, 7 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2011-12-07T18:19:00.000Z-Sources_of_resistance_in_metals???"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2011-12-07T18:19:00.000Z-Sources_of_resistance_in_metals???"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="reorganized_and_moved_content" data-mw-thread-id="h-reorganized_and_moved_content-2011-12-09T17:40:00.000Z"><span data-mw-comment-start="" id="h-reorganized_and_moved_content-2011-12-09T17:40:00.000Z"></span>reorganized and moved content<span data-mw-comment-end="h-reorganized_and_moved_content-2011-12-09T17:40:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=19" title="Edit section: reorganized and moved content"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Sbyrnes321-2011-12-09T17:40:00.000Z-reorganized_and_moved_content"></span>As pointed out in previous discussion, there was not much logic behind what topics were covered in this article versus what topics were in <a href="/wiki/Electrical_resistivity_and_conductivity" title="Electrical resistivity and conductivity">electrical resistivity and conductivity</a>. In reorganizing and rewriting, I moved a lot of content from here to the other article, where it is a better fit to the topic. I don't believe I deleted anything important. I believe that I put sufficient cross-references and links that readers will not have any difficulty finding the content that they are looking for. I hope other people agree, and I hope everyone looks carefully through the articles for any problems I created or mistakes I made. Thanks!! :-) --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2011-12-09T17:40:00.000Z-reorganized_and_moved_content" class="ext-discussiontools-init-timestamplink">17:40, 9 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2011-12-09T17:40:00.000Z-reorganized_and_moved_content"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2011-12-09T17:40:00.000Z-reorganized_and_moved_content"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-TStein-2011-12-09T19:51:00.000Z-reorganized_and_moved_content"></span>Be careful of what you ask for. Here are my thoughts ordered roughly in order of importance to me:</dd></dl> <ol><li>good work</li> <li>you took too much out of the temperature dependence of Resistance. (It is an important property of resistors and therefore of resistance). My suggestions:</li></ol> <dl><dd><dl><dd><ul><li>move temperature dependence out of resistivity and just before strain dependence</li> <li>low temp dependence is not needed but I think basic linear dependence R = Ro(1-α(T-To) is important. A small table or link to typical α may (or may not) be appropriate.</li> <li>some expansion of themistor and resistance thermometers may be appropriate (or not?). To me the section seems too short and technical for the importance of these devices. Opinions may vary.</li></ul></dd></dl></dd></dl> <ol><li>Move AC circuits to bottom. It just is not as closely related to resistance as the other sections, in my opinion, and is the most difficult to understand.</li> <li>Move typical resistance section and measuring resistance section up to near the top and expand. In my mind these are two of the most defining characteristics of this article.</li> <li>You did not cut enough from resistivity. I don't think much more needs to be said other than the relation between resistivity/conductivity and resistance/conductance and the fact that the resistance/conductance of an object can be set by choosing appropriate materials and dimensions.</li> <li>To help link articles I prefer to use the about template like {{about|a property of objects describing how well electricity flows through them|a property of materials describing how well electricity flows through them|electrical resistivity and conductivity}}</li> <li>On an unrelated note, I did not see superconductors in the article.</li> <li>Another unrelated note, a little expansion of Impedance may be appropriate. Resistance is an article that should be geared for a little lower technical level audience than a typical article, in my opinion. Either take a few more sentences to explain it better or cut it down to the fact that it exists without the equations.</li> <li>keep up the good work</li></ol> <p><a href="/wiki/User:TStein" title="User:TStein">TStein</a> (<a href="/wiki/User_talk:TStein" title="User talk:TStein">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-TStein-2011-12-09T19:51:00.000Z-reorganized_and_moved_content" class="ext-discussiontools-init-timestamplink">19:51, 9 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-TStein-2011-12-09T19:51:00.000Z-reorganized_and_moved_content"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-TStein-2011-12-09T19:51:00.000Z-reorganized_and_moved_content"></span> </p> <dl><dd><dl><dd><span data-mw-comment-start="" id="c-Sbyrnes321-2011-12-11T21:38:00.000Z-TStein-2011-12-09T19:51:00.000Z"></span>Thanks! I agree with most, or probably all, of these. (Most of these are not my fault!) I hope to chip away at them, as time permits.</dd> <dd>For the resistance table, I can't think of any other suitable entries besides the four there now. Maybe someone else can think of some... :-) --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2011-12-11T21:38:00.000Z-TStein-2011-12-09T19:51:00.000Z" class="ext-discussiontools-init-timestamplink">21:38, 11 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2011-12-11T21:38:00.000Z-TStein-2011-12-09T19:51:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2011-12-11T21:38:00.000Z-TStein-2011-12-09T19:51:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-TStein-2011-12-12T04:11:00.000Z-Sbyrnes321-2011-12-11T21:38:00.000Z"></span>I figured that most of those were probably there already. But, I was going to evaluate it I might as well do it right. As far as the table, I had some ideas before, but I wasn't smart enough to write them down. <a href="/wiki/User:TStein" title="User:TStein">TStein</a> (<a href="/wiki/User_talk:TStein" title="User talk:TStein">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-TStein-2011-12-12T04:11:00.000Z-Sbyrnes321-2011-12-11T21:38:00.000Z" class="ext-discussiontools-init-timestamplink">04:11, 12 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-TStein-2011-12-12T04:11:00.000Z-Sbyrnes321-2011-12-11T21:38:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-TStein-2011-12-12T04:11:00.000Z-Sbyrnes321-2011-12-11T21:38:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Sbyrnes321-2011-12-13T15:37:00.000Z-TStein-2011-12-12T04:11:00.000Z"></span>My list of other things that could be done... <ul><li><a href="/wiki/Series_and_parallel_circuits" title="Series and parallel circuits">Series and parallel circuits</a> summary (maybe not sufficiently important)</li> <li><a href="/wiki/Output_impedance" title="Output impedance">Output impedance</a>, <a href="/wiki/Input_impedance" title="Input impedance">Input impedance</a> summary (probably not sufficiently important)</li> <li>Plots of some ohmic and non-ohmic IV curves: Large resistance, small resistance, battery, diode</li> <li>Nonlinear IV curve with differential resistance and chordal resistance drawn in</li> <li>More details about ohmmeters (maybe not sufficiently important beyond one or two sentences)</li> <li>Summary of <a href="/wiki/Joule_heating" title="Joule heating">joule heating</a>, i.e. the fact that pushing current through a resistance dissipates energy</li></ul></dd> <dd>--<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2011-12-13T15:37:00.000Z-TStein-2011-12-12T04:11:00.000Z" class="ext-discussiontools-init-timestamplink">15:37, 13 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2011-12-13T15:37:00.000Z-TStein-2011-12-12T04:11:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2011-12-13T15:37:00.000Z-TStein-2011-12-12T04:11:00.000Z"></span></dd></dl></dd></dl></dd></dl></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id=""R=1/G_always_for_a_given_element_in_a_circuit"?" data-mw-thread-id="h-"R=1/G_always_for_a_given_element_in_a_circuit"?-2011-12-24T12:57:00.000Z"><span id=".22R.3D1.2FG_always_for_a_given_element_in_a_circuit.22.3F"></span><span data-mw-comment-start="" id="h-"R=1/G_always_for_a_given_element_in_a_circuit"?-2011-12-24T12:57:00.000Z"></span>"R=1/G always for a given element in a circuit"?<span data-mw-comment-end="h-"R=1/G_always_for_a_given_element_in_a_circuit"?-2011-12-24T12:57:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=20" title="Edit section: "R=1/G always for a given element in a circuit"?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Sbyrnes321-2011-12-24T12:57:00.000Z-"R=1/G_always_for_a_given_element_in_a_circuit"?"></span>Spinningspark <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Electrical_resistance_and_conductance&diff=467416366&oldid=467413933">writes</a> "R=1/G always for a given element in a circuit". Can you please explain this? Are you disagreeing with "R is the real part of Z, G is the real part of Y"? Or are you saying that "a given element" must be an ideal resistor? An ideal capacitor has R=G=0, so R=1/G is not true. Is an ideal capacitor not an "element"?? A <i>real</i> resistor or wire(as opposed to an idealized resistor) has a nonzero reactance, so R=1/G is not true. Is a real resistor or wire not an "element"?? --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2011-12-24T12:57:00.000Z-"R=1/G_always_for_a_given_element_in_a_circuit"?" class="ext-discussiontools-init-timestamplink">12:57, 24 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2011-12-24T12:57:00.000Z-"R=1/G_always_for_a_given_element_in_a_circuit"?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2011-12-24T12:57:00.000Z-"R=1/G_always_for_a_given_element_in_a_circuit"?"></span> </p><p><span data-mw-comment-start="" id="c-Sbyrnes321-2011-12-24T13:30:00.000Z-"R=1/G_always_for_a_given_element_in_a_circuit"?"></span>UPDATE: OK, I guess a real resistor is a "component" not an "element". I'm still confused about the ideal capacitor. Also, it seems to me that readers may be naturally thinking in terms of components rather than elements if we don't clearly state otherwise. </p><p>On a perhaps-related note, you wrote "The impedance and admittance may be expressed as complex numbers". <i>May be</i>? I thought, impedance and admittance <i>are</i> complex numbers. Right? --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2011-12-24T13:30:00.000Z-"R=1/G_always_for_a_given_element_in_a_circuit"?" class="ext-discussiontools-init-timestamplink">13:30, 24 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2011-12-24T13:30:00.000Z-"R=1/G_always_for_a_given_element_in_a_circuit"?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2011-12-24T13:30:00.000Z-"R=1/G_always_for_a_given_element_in_a_circuit"?"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Spinningspark-2011-12-25T01:42:00.000Z-Sbyrnes321-2011-12-24T13:30:00.000Z"></span>Where I am coming from with this is that Z=R+iX and Y=G+iB while they may be equal to the same impedance are not represented by the same network. An impedance consisting of a resistance R1 in series with a reactance X1 is given by Z=R1+iX1. A conductance G1=1/R1 in series with a susceptance B1=1/X1 has the same impedance Z. However it is decidedly not true that the admittance Y=1/Z is equal to G1+iB1.</dd> <dd>At the risk of now boring you with repetition, the dual of this is that an admittance consisting of a conductance in parallel with a susceptance is given by Y=G2+iB2. The resistance of the conductance is R2=1/G2 and the reactance of the susceptance is X2=1/B2. It is decidedly not true that Z=R2+iX2.</dd> <dd>The former claim in the article amounts to saying that R1≠1/G2. Well of course it doesn't, R1 and G2 are not the same element. The first is the resistance from a series equivalent circuit and the second is from a parallel equivalent circuit. It is however always true (by definition) that the conductance of element R1 is always 1/R1 and the conductance of element R2 is always 1/R2.</dd></dl> <dl><dd>On the "...may be expressed as a complex number". It is certainly true that to get anywhere with a mathematical analysis of a non-trivial network it is more or less mandatory to express impedance as a complex number. However, it is perfectly possible to introduce the concept of impedance without resorting to complex number representations at all. This is frequently done on elementary electrical science/engineering courses where the mathematical training of the students is not yet advanced enough to cope with complex number manipulations but the course requires impedance to be introduced at an early stage. While much more clumsy, it is still possible. It is also true that the Z=a+ib representation is not the only complex number representation. <b><a href="/wiki/User:Spinningspark" title="User:Spinningspark"><span style="background:#fafad2; color:#C08000;">Spinning</span></a><a href="/wiki/User_talk:Spinningspark" title="User talk:Spinningspark"><span style="color:#4840a0;">Spark</span></a></b> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Spinningspark-2011-12-25T01:42:00.000Z-Sbyrnes321-2011-12-24T13:30:00.000Z" class="ext-discussiontools-init-timestamplink">01:42, 25 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Spinningspark-2011-12-25T01:42:00.000Z-Sbyrnes321-2011-12-24T13:30:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Spinningspark-2011-12-25T01:42:00.000Z-Sbyrnes321-2011-12-24T13:30:00.000Z"></span></dd></dl> <dl><dd><dl><dd><span data-mw-comment-start="" id="c-Sbyrnes321-2011-12-25T22:15:00.000Z-Spinningspark-2011-12-25T01:42:00.000Z"></span>If I have a wire with complex impedance Z, I personally would say: "The AC resistance of the wire is defined as the real part of Z, the AC conductance of the wire is defined as the real part of 1/Z". But it seems, you would find that statement misleading, right? After all, the "resistance of the wire" has one value if you represent the wire as a series network, and a different value if you represent it as a parallel network. I just want to understand your perspective here... :-)</dd></dl></dd></dl> <dl><dd><dl><dd>For the other question: You say, "it is perfectly possible to introduce the concept of impedance without resorting to complex number representations". Well, it's true that you can describe complex numbers without calling them complex numbers. You can discuss pairs of real numbers (or a single real number paired with an angle) with certain arithmetic/manipulation rules, and you are actually discussing complex numbers by another name. So it still seems to me that if a simple textbook says "impedance is a real number paired with an angle" that does not mean wikipedia should avoid the statement "impedance is a complex number". (I suppose I need to look through some textbooks to understand better.) --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2011-12-25T22:15:00.000Z-Spinningspark-2011-12-25T01:42:00.000Z" class="ext-discussiontools-init-timestamplink">22:15, 25 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2011-12-25T22:15:00.000Z-Spinningspark-2011-12-25T01:42:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2011-12-25T22:15:00.000Z-Spinningspark-2011-12-25T01:42:00.000Z"></span></dd></dl></dd></dl> <dl><dd><dl><dd><dl><dd><span data-mw-comment-start="" id="c-Spinningspark-2011-12-26T00:38:00.000Z-Sbyrnes321-2011-12-25T22:15:00.000Z"></span>Without getting into a big debate and answering all your points in detail (for which we should probably take the discussion off this talk page) the bottom line is that conductance is the reciprocal of resistance by its definition and to say that it sometimes isn't is not just misleading but is downright wrong. <b><a href="/wiki/User:Spinningspark" title="User:Spinningspark"><span style="background:#fafad2; color:#C08000;">Spinning</span></a><a href="/wiki/User_talk:Spinningspark" title="User talk:Spinningspark"><span style="color:#4840a0;">Spark</span></a></b> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Spinningspark-2011-12-26T00:38:00.000Z-Sbyrnes321-2011-12-25T22:15:00.000Z" class="ext-discussiontools-init-timestamplink">00:38, 26 December 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Spinningspark-2011-12-26T00:38:00.000Z-Sbyrnes321-2011-12-25T22:15:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Spinningspark-2011-12-26T00:38:00.000Z-Sbyrnes321-2011-12-25T22:15:00.000Z"></span></dd></dl></dd></dl></dd></dl> <dl><dd><dl><dd><dl><dd><dl><dd><span data-mw-comment-start="" id="c-Sbyrnes321-2012-01-01T13:54:00.000Z-Spinningspark-2011-12-26T00:38:00.000Z"></span>What about: <dl><dd>Often, the real part of the impedance of a component is called its "AC resistance" and the real part of the admittance of a component is called its "AC conductance". With this terminology, the "AC resistance" of a component may not be the reciprocal of the "AC conductance" of the same component.</dd></dl></dd> <dd>Is this any better? :-) --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2012-01-01T13:54:00.000Z-Spinningspark-2011-12-26T00:38:00.000Z" class="ext-discussiontools-init-timestamplink">13:54, 1 January 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2012-01-01T13:54:00.000Z-Spinningspark-2011-12-26T00:38:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2012-01-01T13:54:00.000Z-Spinningspark-2011-12-26T00:38:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Spinningspark-2012-01-01T14:52:00.000Z-Sbyrnes321-2012-01-01T13:54:00.000Z"></span>No, it is still introducing an unnecessary confusion. The reason you do not get conductance reciprocal of resistance has nothing to do with the application of AC. The resistive part of an impedance does not change because AC is applied (putting aside skin effects and the like). It does not even really have anything to do with splitting an impedance into real and imaginary parts. It has everything to do with series and parallel representations. A similar anomaly can be constructed entirely with resistive elements. As an example, take a resistance of 1 kilohm. This can be represented with an equivalent circuit of two resistors in series: R1=R2=500 ohm. That same 1 kilohm resistance (equal to a 1 mS conductance) can be represented by two conductances in parallel: G1=G2=500 μS. No one should find it in the least bit strange that G1 is not the reciprocal of R1 and G2 is not the reciprocal of R2. It is not some anomalous exception to the definition of conductance. Yet that is exactly what you seem to be saying about impedance. I have recently been looking through <a href="/wiki/Ernst_Guillemin" title="Ernst Guillemin">Ernst Guillemin</a>'s <i>Introductory Circuit Theory</i> for the purposes of referencing a different article. Guillemin has some <a class="external text" href="https://en.wikipedia.org/w/index.php?title=User:Spinningspark/Sandbox&oldid=468083278">interesting things to say</a> on this. You seem to have walked into exactly the trap Guillemin is talking about. Guillemin was a major figure in network analysis and its teaching and if he says it is a mistake to look at impedance this way then it should be taken seriously. At least find an equally notable reference who says you <i>should</i> explain it this way. <b><a href="/wiki/User:Spinningspark" title="User:Spinningspark"><span style="background:#fafad2; color:#C08000;">Spinning</span></a><a href="/wiki/User_talk:Spinningspark" title="User talk:Spinningspark"><span style="color:#4840a0;">Spark</span></a></b> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Spinningspark-2012-01-01T14:52:00.000Z-Sbyrnes321-2012-01-01T13:54:00.000Z" class="ext-discussiontools-init-timestamplink">14:52, 1 January 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Spinningspark-2012-01-01T14:52:00.000Z-Sbyrnes321-2012-01-01T13:54:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Spinningspark-2012-01-01T14:52:00.000Z-Sbyrnes321-2012-01-01T13:54:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Sbyrnes321-2012-01-01T18:10:00.000Z-Spinningspark-2012-01-01T14:52:00.000Z"></span>Hmm. For now, I'll take your word for it. I certainly have no problem with what's <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Electrical_resistance_and_conductance&oldid=467416366">currently</a> in the article.</dd> <dd>Incidentally, if you think anything else in the "impedance and admittance" section is misleading or unhelpful to a deep understanding, feel free to change it! :-) --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2012-01-01T18:10:00.000Z-Spinningspark-2012-01-01T14:52:00.000Z" class="ext-discussiontools-init-timestamplink">18:10, 1 January 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2012-01-01T18:10:00.000Z-Spinningspark-2012-01-01T14:52:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2012-01-01T18:10:00.000Z-Spinningspark-2012-01-01T14:52:00.000Z"></span></dd></dl></dd></dl></dd></dl></dd></dl></dd></dl></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Resistance_defined_at_I=0?" data-mw-thread-id="h-Resistance_defined_at_I=0?-2012-01-29T03:08:00.000Z"><span id="Resistance_defined_at_I.3D0.3F"></span><span data-mw-comment-start="" id="h-Resistance_defined_at_I=0?-2012-01-29T03:08:00.000Z"></span>Resistance defined at I=0?<span data-mw-comment-end="h-Resistance_defined_at_I=0?-2012-01-29T03:08:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=21" title="Edit section: Resistance defined at I=0?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Gwideman-2012-01-29T03:08:00.000Z-Resistance_defined_at_I=0?"></span>The introductory section states: "The resistance of an object is defined as the ratio of voltage across it to current through it, while the conductance is the inverse:" </p><p>But this would suggest that resistance is undefined when I=0. Questions: </p><p>1. Assuming an ohmic ("constant resistance") component or element, do different disciplines have different conventions about how to regard resistance: Is it situational? Or is resistance regarded as a fixed property of a component or circuit element, corresponding to how resistivity is treated as a property of a material even in the absence of current.? </p><p>2. What are some circumstances where it matters whether resistance is regarded as defined or undefined at I = 0? </p><p>3. Is R = V/I perhaps not a definition, but rather just a relationship? It just provides a way to measure R, which doesn't work with I = 0? </p><p>4. Perhaps the way disciplines use the concept resistance (especially in algebra) actually implies that the definition is more like: </p> <pre> R = V/I, I <> 0 R = dV/dI, I=0 </pre> <p>Interested to hear what people have to say. <a href="/w/index.php?title=User:Gwideman&action=edit&redlink=1" class="new" title="User:Gwideman (page does not exist)">Gwideman</a> (<a href="/wiki/User_talk:Gwideman" title="User talk:Gwideman">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Gwideman-2012-01-29T03:08:00.000Z-Resistance_defined_at_I=0?" class="ext-discussiontools-init-timestamplink">03:08, 29 January 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gwideman-2012-01-29T03:08:00.000Z-Resistance_defined_at_I=0?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gwideman-2012-01-29T03:08:00.000Z-Resistance_defined_at_I=0?"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Sbyrnes321-2012-01-29T13:17:00.000Z-Gwideman-2012-01-29T03:08:00.000Z"></span>My impression (someone can correct me if I'm wrong) is that the resistance of an ohmic component is regarded as an fixed intrinsic property of the component. For example, let's say I have a "100 ohm resistor" in a circuit. If I cut it out of the circuit and put it in a plastic bag on my shelf, it is still a "100 ohm resistor". If someone asks me what its resistance is, I would say "100 ohms", I don't say "That question has no answer as there is no current flowing through it at the moment."</dd></dl> <dl><dd>For (4), see <a href="/wiki/Electrical_resistance_and_conductance#Static_and_differential_resistance" title="Electrical resistance and conductance">Electrical resistance and conductance#Static and differential resistance</a>. It is certainly true that "differential resistance at zero current" is defined but "static resistance at zero current" is not. That's for non-ohmic components though. For something that's perfectly ohmic, people would not talk about static or differential resistance, they would only talk about its (fixed intrinsic) resistance. --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2012-01-29T13:17:00.000Z-Gwideman-2012-01-29T03:08:00.000Z" class="ext-discussiontools-init-timestamplink">13:17, 29 January 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2012-01-29T13:17:00.000Z-Gwideman-2012-01-29T03:08:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2012-01-29T13:17:00.000Z-Gwideman-2012-01-29T03:08:00.000Z"></span></dd></dl> <dl><dd><dl><dd><span data-mw-comment-start="" id="c-Gwideman-2012-01-30T09:32:00.000Z-Sbyrnes321-2012-01-29T13:17:00.000Z"></span>Steve: My impression from several decades exposure to EE matches yours. I'm hoping for something more formal :-). In particular, clarification of whether resistance is considered an intrinsic property (whether for an ohmic component or not, or for an idealized element), whether this differs by discipline, and so on. <a href="/w/index.php?title=User:Gwideman&action=edit&redlink=1" class="new" title="User:Gwideman (page does not exist)">Gwideman</a> (<a href="/wiki/User_talk:Gwideman" title="User talk:Gwideman">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Gwideman-2012-01-30T09:32:00.000Z-Sbyrnes321-2012-01-29T13:17:00.000Z" class="ext-discussiontools-init-timestamplink">09:32, 30 January 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gwideman-2012-01-30T09:32:00.000Z-Sbyrnes321-2012-01-29T13:17:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gwideman-2012-01-30T09:32:00.000Z-Sbyrnes321-2012-01-29T13:17:00.000Z"></span></dd></dl></dd></dl> <dl><dd><span data-mw-comment-start="" id="c-Spinningspark-2012-01-30T14:09:00.000Z-Gwideman-2012-01-29T03:08:00.000Z"></span>I am completely against complicating the article with this kind of unnecessary imaginary difficulty just because the mathematicians get upset by it. I am with <a rel="nofollow" class="external text" href="http://people.sc.fsu.edu/~jburkardt/fun/misc/quotes.html">Heaviside</a> on this one. Every other law in physics which involves proportionality of two variables will have the same problem when it comes to defining the constant of proportionality. <a href="/wiki/Hooke%27s_law" title="Hooke's law">Hooke's law</a> for instance, and even <a href="/wiki/Newton%27s_second_law" class="mw-redirect" title="Newton's second law">Newton's second law</a>. I would say that <a rel="nofollow" class="external text" href="http://mathworld.wolfram.com/DivisionbyZero.html">division by zero</a> in this cotext would best be replaced by a limit rather than a differential, why switch from static to differential resistance just because it is near zero? Although I would not be in favour of that going in the article either. Note there are some circumstances when a limit and a differential may not give the same result at zero - a <a href="/wiki/Memristor" title="Memristor">memristor</a> for instance. The bottom line for me is that none of the sources that define R=V/I find it necessary to give a special treatment of the case I=0. Without a source, it doesn't go in Wikipedia, and doesn't get discussed here. <b><a href="/wiki/User:Spinningspark" title="User:Spinningspark"><span style="background:#fafad2; color:#C08000;">Spinning</span></a><a href="/wiki/User_talk:Spinningspark" title="User talk:Spinningspark"><span style="color:#4840a0;">Spark</span></a></b> <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Spinningspark-2012-01-30T14:09:00.000Z-Gwideman-2012-01-29T03:08:00.000Z" class="ext-discussiontools-init-timestamplink">14:09, 30 January 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Spinningspark-2012-01-30T14:09:00.000Z-Gwideman-2012-01-29T03:08:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Spinningspark-2012-01-30T14:09:00.000Z-Gwideman-2012-01-29T03:08:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="name" data-mw-thread-id="h-name-2012-11-19T23:59:00.000Z"><span data-mw-comment-start="" id="h-name-2012-11-19T23:59:00.000Z"></span>name<span data-mw-comment-end="h-name-2012-11-19T23:59:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=22" title="Edit section: name"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><a href="/wiki/Wikipedia:Naming_conventions#Titles_containing_"and"" class="mw-redirect" title="Wikipedia:Naming conventions"><span data-mw-comment-start="" id="c-24.131.80.19-2012-11-19T23:59:00.000Z-name"></span>Wikipedia:Naming conventions#Titles containing "and"</a> <span style="font-size: smaller;" class="autosigned">— Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/wiki/Special:Contributions/24.131.80.19" title="Special:Contributions/24.131.80.19">24.131.80.19</a> (<a href="/wiki/User_talk:24.131.80.19" title="User talk:24.131.80.19">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-24.131.80.19-2012-11-19T23:59:00.000Z-name" class="ext-discussiontools-init-timestamplink">23:59, 19 November 2012 (UTC)</a></span><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-24.131.80.19-2012-11-19T23:59:00.000Z-name"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-24.131.80.19-2012-11-19T23:59:00.000Z-name"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Sbyrnes321-2012-11-20T22:29:00.000Z-24.131.80.19-2012-11-19T23:59:00.000Z"></span>Can you please tell us why you just posted this link? Do you object to the name of this article? Can you elaborate a bit? --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2012-11-20T22:29:00.000Z-24.131.80.19-2012-11-19T23:59:00.000Z" class="ext-discussiontools-init-timestamplink">22:29, 20 November 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2012-11-20T22:29:00.000Z-24.131.80.19-2012-11-19T23:59:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2012-11-20T22:29:00.000Z-24.131.80.19-2012-11-19T23:59:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_network" data-mw-thread-id="h-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_netwo-2015-11-07T00:25:00.000Z"><span data-mw-comment-start="" id="h-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_netwo-2015-11-07T00:25:00.000Z"></span>Practical aspects of the electrical resistance as a part of the electrical network<span data-mw-comment-end="h-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_netwo-2015-11-07T00:25:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=23" title="Edit section: Practical aspects of the electrical resistance as a part of the electrical network"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Seagateups-2015-11-07T00:25:00.000Z-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_netwo"></span>Security and norm applications of a resistance in an electrical network: necessity of a such resistance between the electrical network and turned on devices. <a href="/wiki/UPS" class="mw-disambig" title="UPS">https://en.wikipedia.org/wiki/Uninterruptible_power_supply</a> for computer technics and TV display (because voltage fluctuations possible) and a rectifier for a fridge. Protection against magnetization is needed, because a biological organism accumulates a static charge and PC accumulates it from an electrical network. If there is an UPS, it isn't felt by human. Eyes don't stick on the monitor, in other words, and a person reacts to its contents another way. Between a network and PC there are a lot of asynchronous events. UPS suppresses their excessive intensity (in relation to impact on a live organism). I.e. charges on a body and on the computer can strongly interact statically, if there is this resistance. I think that if electric conducting old, it can be felt more, than on new, but effect in fact the same. For the fridge - the rectifier is necessary (the rectifier will transform alternating current to constant, the UPS leaves alternating current as is, alternating current is used in networks most for transfering of the electric power to long distances. It is easier to transport it on long distances, transforming in transformers. Probably, because fridges main objective - to maintain temperature, but not online to interact with the user. Also, as far as I know, other kitchen devices (a teapot, a plate) don't recommend to include through UPS/rectifier/network filter. The standard UPS for them will have rather high electricity consumption a little therefore it is better to include them directly, but essentially and they can be included via the UPS/rectifier, simply in this case it is impractical. About network security see <a rel="nofollow" class="external text" href="http://www.wired.com/2000/04/joy-2/">Why the Future Doesn’t Need Us</a>. <a href="/w/index.php?title=User:Seagateups&action=edit&redlink=1" class="new" title="User:Seagateups (page does not exist)">Seagateups</a> (<a href="/wiki/User_talk:Seagateups" class="mw-redirect" title="User talk:Seagateups">talk</a> • <a href="/wiki/Special:Contributions/Seagateups" title="Special:Contributions/Seagateups">contribs</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Seagateups-2015-11-07T00:25:00.000Z-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_netwo" class="ext-discussiontools-init-timestamplink">00:25, 7 November 2015 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Seagateups-2015-11-07T00:25:00.000Z-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_netwo"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Seagateups-2015-11-07T00:25:00.000Z-Practical_aspects_of_the_electrical_resistance_as_a_part_of_the_electrical_netwo"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="SI_dimension_needed_fast" data-mw-thread-id="h-SI_dimension_needed_fast-2017-09-30T00:47:00.000Z"><span data-mw-comment-start="" id="h-SI_dimension_needed_fast-2017-09-30T00:47:00.000Z"></span>SI dimension needed fast<span data-mw-comment-end="h-SI_dimension_needed_fast-2017-09-30T00:47:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=24" title="Edit section: SI dimension needed fast"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Sbyrnes321-2017-09-30T00:47:00.000Z-SI_dimension_needed_fast"></span>SI dimension of resistance is not given in the above section of the article or the right side of the article .Every physics related topics have SI dimension . The SI dimension of resistance is M^(1)L^(2)s^(-3) </p> <dl><dd>The <a href="/wiki/Ohm" title="Ohm">ohm</a> and <a href="/wiki/Siemens_(unit)" title="Siemens (unit)">Siemens (unit)</a> articles both have "in SI base units" easy to find in the little box on the top-right. My feeling is that that's good enough; I don't think <i>this</i> article would benefit from having either or both of those "in SI base units" expressions in the article. I don't feel very strongly though. I'm curious: Would you mind telling me what you were in the middle of doing, or trying to do, when you started looking for the "in SI base units" expression here? --<a href="/wiki/User:Sbyrnes321" title="User:Sbyrnes321">Steve</a> (<a href="/wiki/User_talk:Sbyrnes321" title="User talk:Sbyrnes321">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Sbyrnes321-2017-09-30T00:47:00.000Z-SI_dimension_needed_fast" class="ext-discussiontools-init-timestamplink">00:47, 30 September 2017 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Sbyrnes321-2017-09-30T00:47:00.000Z-SI_dimension_needed_fast"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Sbyrnes321-2017-09-30T00:47:00.000Z-SI_dimension_needed_fast"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="U_as_symbol_for_voltage" data-mw-thread-id="h-U_as_symbol_for_voltage-2020-02-23T15:25:00.000Z"><span data-mw-comment-start="" id="h-U_as_symbol_for_voltage-2020-02-23T15:25:00.000Z"></span>U as symbol for voltage<span data-mw-comment-end="h-U_as_symbol_for_voltage-2020-02-23T15:25:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=25" title="Edit section: U as symbol for voltage"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Gunnar.Kaestle-2020-02-23T15:25:00.000Z-U_as_symbol_for_voltage"></span>Although V is often used as symbol for voltage, the <a rel="nofollow" class="external text" href="http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-11-27">official voltage symbol</a> is <i>U</i>. V is the abbreviation for the unit volt, and this may cause misunderstandings. This can be shown easily with the so called <a href="/wiki/USB" title="USB">USB</a> equation: </p> <pre>V = 5 V </pre> <p>Subtract <b>1 V</b> on both sides: </p> <pre>0 V = 4 V </pre> <p>Divide by <b>V</b>: </p> <pre>0 = 4 (false) </pre> <p>This is the mathematical proof that using V as a unit abbreviation and as a symbol is problematic. Besides, <a rel="nofollow" class="external text" href="http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=113-03-48">V as potential energy</a> is used not only for electric potentials, but for other potentials as well. --<a href="/wiki/User:Gunnar.Kaestle" title="User:Gunnar.Kaestle">Gunnar</a> (<a href="/wiki/User_talk:Gunnar.Kaestle" title="User talk:Gunnar.Kaestle">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Gunnar.Kaestle-2020-02-23T15:25:00.000Z-U_as_symbol_for_voltage" class="ext-discussiontools-init-timestamplink">15:25, 23 February 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gunnar.Kaestle-2020-02-23T15:25:00.000Z-U_as_symbol_for_voltage"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gunnar.Kaestle-2020-02-23T15:25:00.000Z-U_as_symbol_for_voltage"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="electric_vs._electrical" data-mw-thread-id="h-electric_vs._electrical-2020-02-23T17:52:00.000Z"><span data-mw-comment-start="" id="h-electric_vs._electrical-2020-02-23T17:52:00.000Z"></span>electric vs. electrical<span data-mw-comment-end="h-electric_vs._electrical-2020-02-23T17:52:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=26" title="Edit section: electric vs. electrical"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Gunnar.Kaestle-2020-02-23T17:52:00.000Z-electric_vs._electrical"></span>Are the terms <b><a rel="nofollow" class="external text" href="http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=151-11-05">electrical</a> resistance</b> & <b>electrical conductance</b> more common or <b><a rel="nofollow" class="external text" href="http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=151-11-03">electric</a> resistance</b> & <b>electric conductance</b>? What are the fine details in the different meanings of electric and electrical in this context? --<a href="/wiki/User:Gunnar.Kaestle" title="User:Gunnar.Kaestle">Gunnar</a> (<a href="/wiki/User_talk:Gunnar.Kaestle" title="User talk:Gunnar.Kaestle">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Gunnar.Kaestle-2020-02-23T17:52:00.000Z-electric_vs._electrical" class="ext-discussiontools-init-timestamplink">17:52, 23 February 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gunnar.Kaestle-2020-02-23T17:52:00.000Z-electric_vs._electrical"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gunnar.Kaestle-2020-02-23T17:52:00.000Z-electric_vs._electrical"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Underline_complex_numbers?" data-mw-thread-id="h-Underline_complex_numbers?-2020-02-23T18:09:00.000Z"><span id="Underline_complex_numbers.3F"></span><span data-mw-comment-start="" id="h-Underline_complex_numbers?-2020-02-23T18:09:00.000Z"></span>Underline complex numbers?<span data-mw-comment-end="h-Underline_complex_numbers?-2020-02-23T18:09:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=27" title="Edit section: Underline complex numbers?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Jc3s5h-2020-02-23T18:09:00.000Z-Underline_complex_numbers?"></span>I have reverted <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Electrical_resistance_and_conductance&curid=61577&diff=942267781&oldid=942254752">this edit</a> because I have never heard of underlining the variable that represents a complex number. To make sure my memory wasn't slipping, I reviewed one of my undergraduate electrical engineering texts. In the first several pages of chapter 7, "Sinusoidal Steady-State Analysis", Desoer and Kuh do not underline variables that represent complex numbers. </p><p>By the way, I looked to see if either author has a Wikipedia article, they don't. But Charles Desoer has an <a href="/wiki/IEEE" class="mw-redirect" title="IEEE">IEEE</a> <a rel="nofollow" class="external text" href="https://ieee-cas.org/charles-desoer-technical-achievement-award-recipients">award</a> named after him. <a href="/wiki/User:Jc3s5h" title="User:Jc3s5h">Jc3s5h</a> (<a href="/wiki/User_talk:Jc3s5h" title="User talk:Jc3s5h">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Jc3s5h-2020-02-23T18:09:00.000Z-Underline_complex_numbers?" class="ext-discussiontools-init-timestamplink">18:09, 23 February 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Jc3s5h-2020-02-23T18:09:00.000Z-Underline_complex_numbers?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Jc3s5h-2020-02-23T18:09:00.000Z-Underline_complex_numbers?"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Gunnar.Kaestle-2020-02-23T18:13:00.000Z-Jc3s5h-2020-02-23T18:09:00.000Z"></span><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Complex_Impedance.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c4/Complex_Impedance.svg/220px-Complex_Impedance.svg.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c4/Complex_Impedance.svg/330px-Complex_Impedance.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c4/Complex_Impedance.svg/440px-Complex_Impedance.svg.png 2x" data-file-width="200" data-file-height="200"/></a><figcaption>Complex Impedance</figcaption></figure> Maybe that book does not use them, but this doesn't mean this is not <a rel="nofollow" class="external text" href="http://www.capacitorguide.com/impedance-and-reactance/#Ohms_law">common</a>. I think it is a very useful practise, especially for beginners that try to learn the basics from the Wikipedia articles, to discriminate between complex numbers and real numbers and that this difference of the variable's structure is visible at first sight. --<a href="/wiki/User:Gunnar.Kaestle" title="User:Gunnar.Kaestle">Gunnar</a> (<a href="/wiki/User_talk:Gunnar.Kaestle" title="User talk:Gunnar.Kaestle">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Gunnar.Kaestle-2020-02-23T18:13:00.000Z-Jc3s5h-2020-02-23T18:09:00.000Z" class="ext-discussiontools-init-timestamplink">18:13, 23 February 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gunnar.Kaestle-2020-02-23T18:13:00.000Z-Jc3s5h-2020-02-23T18:09:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gunnar.Kaestle-2020-02-23T18:13:00.000Z-Jc3s5h-2020-02-23T18:09:00.000Z"></span></dd> <dd><span class="template-ping"><span data-mw-comment-start="" id="c-Gunnar.Kaestle-2020-02-23T18:30:00.000Z-Jc3s5h-2020-02-23T18:09:00.000Z"></span>@<a href="/wiki/User:Jc3s5h" title="User:Jc3s5h">Jc3s5h</a>:</span> BTW, in this figure on the impedance, the complex nature of Z is indicated with a tilde above the name of the variable. I don't care much about having a tilde on top or an underscore below, but I do care about the fact that complex numbers and real numbers are separated visually. And adding <u>underline</u> tags is editorially quite easy, so I preferred the underscore. --<a href="/wiki/User:Gunnar.Kaestle" title="User:Gunnar.Kaestle">Gunnar</a> (<a href="/wiki/User_talk:Gunnar.Kaestle" title="User talk:Gunnar.Kaestle">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Gunnar.Kaestle-2020-02-23T18:30:00.000Z-Jc3s5h-2020-02-23T18:09:00.000Z" class="ext-discussiontools-init-timestamplink">18:30, 23 February 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gunnar.Kaestle-2020-02-23T18:30:00.000Z-Jc3s5h-2020-02-23T18:09:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gunnar.Kaestle-2020-02-23T18:30:00.000Z-Jc3s5h-2020-02-23T18:09:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Jc3s5h-2020-02-23T18:43:00.000Z-Gunnar.Kaestle-2020-02-23T18:30:00.000Z"></span>In <a rel="nofollow" class="external text" href="http://mathworld.wolfram.com/Underscore.html">mathworld.wolfram.com</a> it's mentioned that sometimes an underscore instead of an overbar or boldface to indicate a vector. Although a complex number is related to a vector, Desoer and Kuh choose to use upright boldface for vectors while using italic letters with no other decoration for complex numbers. (p. 839)</dd> <dd>It seems to me this article does not make extensive use of complex numbers so there really isn't a need to introduce notation that will be unfamiliar to some readers. Let's wait for some input for other editors. <a href="/wiki/User:Jc3s5h" title="User:Jc3s5h">Jc3s5h</a> (<a href="/wiki/User_talk:Jc3s5h" title="User talk:Jc3s5h">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Jc3s5h-2020-02-23T18:43:00.000Z-Gunnar.Kaestle-2020-02-23T18:30:00.000Z" class="ext-discussiontools-init-timestamplink">18:43, 23 February 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Jc3s5h-2020-02-23T18:43:00.000Z-Gunnar.Kaestle-2020-02-23T18:30:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Jc3s5h-2020-02-23T18:43:00.000Z-Gunnar.Kaestle-2020-02-23T18:30:00.000Z"></span> <dl><dd><span class="template-ping"><span data-mw-comment-start="" id="c-Gunnar.Kaestle-2020-02-23T22:15:00.000Z-Jc3s5h-2020-02-23T18:43:00.000Z"></span>@<a href="/wiki/User:Jc3s5h" title="User:Jc3s5h">Jc3s5h</a>:</span> As I already said: If your favourite textbook does not use this notation for complex numbers, this does not mean that it is forbidden nor that it is bad style to do so. The paragraph on <a href="/wiki/Electrical_resistance_and_conductance#AC_circuits" title="Electrical resistance and conductance">AC circuits</a> does use complex numbers, it explicitely says so: <i>U<sub>0</sub></i>, <i>I<sub>0</sub></i>, <i>Z</i>, and <i>Y</i> are complex numbers. I wonder if this is correct, referring to U<sub>0</sub> and I<sub>0</sub>. In the context of the equation above the legend, U<sub>0</sub> and I<sub>0</sub> are the amplitudes, and e^(jwt) is the rotating vector that multiplies the scalar amplitude into a polar value. In principle it is not false to multiply two complex numbers with each other, but for the usual rotating AC vector, the real amplitude is multiplied with a rotating complex vector. The Fourier transform does the opposite: from a times series, you receive a complex number that has a amplitude and an angle for each frequency. --<a href="/wiki/User:Gunnar.Kaestle" title="User:Gunnar.Kaestle">Gunnar</a> (<a href="/wiki/User_talk:Gunnar.Kaestle" title="User talk:Gunnar.Kaestle">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Gunnar.Kaestle-2020-02-23T22:15:00.000Z-Jc3s5h-2020-02-23T18:43:00.000Z" class="ext-discussiontools-init-timestamplink">22:15, 23 February 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gunnar.Kaestle-2020-02-23T22:15:00.000Z-Jc3s5h-2020-02-23T18:43:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gunnar.Kaestle-2020-02-23T22:15:00.000Z-Jc3s5h-2020-02-23T18:43:00.000Z"></span></dd></dl></dd></dl></dd></dl> <p><br/> </p> <style data-mw-deduplicate="TemplateStyles:r1232521257">.mw-parser-output .reflist-talk{margin:auto 0;border:1px dashed var(--border-color-base,#a2a9b1);padding:4px;padding-left:1em}.mw-parser-output .reflist-talk-title{font-weight:bold}</style><div class="reflist-talk"> <p class="reflist-talk-title">References</p> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> </div> </div> <ul><li><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFDesoerKuh1969" class="citation book cs1">Desoer, Charles A.; Kuh, Ernest S. (1969). <i>Basic Circuit Theory</i>. New York: McGraw-Hill. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/007-016575-0" title="Special:BookSources/007-016575-0"><bdi>007-016575-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Basic+Circuit+Theory&rft.place=New+York&rft.pub=McGraw-Hill&rft.date=1969&rft.isbn=007-016575-0&rft.aulast=Desoer&rft.aufirst=Charles+A.&rft.au=Kuh%2C+Ernest+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATalk%3AElectrical+resistance+and+conductance" class="Z3988"></span></li></ul> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Value_corrected_in_the_illustration" data-mw-thread-id="h-Value_corrected_in_the_illustration-2020-03-11T11:43:00.000Z"><span data-mw-comment-start="" id="h-Value_corrected_in_the_illustration-2020-03-11T11:43:00.000Z"></span>Value corrected in the illustration<span data-mw-comment-end="h-Value_corrected_in_the_illustration-2020-03-11T11:43:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=28" title="Edit section: Value corrected in the illustration"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-179.36.79.111-2020-03-11T11:43:00.000Z-Value_corrected_in_the_illustration"></span>Value corrected in the illustration. The resistance value shown is 75 Ohm, not 65. The value 65 does not correspond to any of the E series (from E3 to E192). The author probably confused blue with violet. <a href="/wiki/Special:Contributions/179.36.79.111" title="Special:Contributions/179.36.79.111">179.36.79.111</a> (<a href="/w/index.php?title=User_talk:179.36.79.111&action=edit&redlink=1" class="new" title="User talk:179.36.79.111 (page does not exist)">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-179.36.79.111-2020-03-11T11:43:00.000Z-Value_corrected_in_the_illustration" class="ext-discussiontools-init-timestamplink">11:43, 11 March 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-179.36.79.111-2020-03-11T11:43:00.000Z-Value_corrected_in_the_illustration"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-179.36.79.111-2020-03-11T11:43:00.000Z-Value_corrected_in_the_illustration"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Why_the_letter_G_was_chosen_as_symbol_for_conductance" data-mw-thread-id="h-Why_the_letter_G_was_chosen_as_symbol_for_conductance-2021-07-31T00:12:00.000Z"><span data-mw-comment-start="" id="h-Why_the_letter_G_was_chosen_as_symbol_for_conductance-2021-07-31T00:12:00.000Z"></span>Why the letter G was chosen as symbol for conductance<span data-mw-comment-end="h-Why_the_letter_G_was_chosen_as_symbol_for_conductance-2021-07-31T00:12:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Electrical_resistance_and_conductance&action=edit&section=29" title="Edit section: Why the letter G was chosen as symbol for conductance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Ceinturion-2021-07-31T00:12:00.000Z-Why_the_letter_G_was_chosen_as_symbol_for_conductance"></span>In the 19th century, many symbols for electrical quantities were derived from the initial letter of a name. However, the letter G for conductance is an exception. In 1893, at the International Electrical Congress (IEC) held in the city of Chicago, a proposal on nomenclature and symbols was adopted. It was explicitly stated that the letter G was chosen as symbol for conductance because "it was about the only letter of the Latin alphabet that would not cause confusion".<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> (The letter C was already in use for capacitance.) <a href="/wiki/User:Ceinturion" title="User:Ceinturion">Ceinturion</a> (<a href="/wiki/User_talk:Ceinturion" title="User talk:Ceinturion">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Electrical_resistance_and_conductance#c-Ceinturion-2021-07-31T00:12:00.000Z-Why_the_letter_G_was_chosen_as_symbol_for_conductance" class="ext-discussiontools-init-timestamplink">00:12, 31 July 2021 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Ceinturion-2021-07-31T00:12:00.000Z-Why_the_letter_G_was_chosen_as_symbol_for_conductance"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Ceinturion-2021-07-31T00:12:00.000Z-Why_the_letter_G_was_chosen_as_symbol_for_conductance"></span> </p> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHeringKennelly1894" class="citation journal cs1">Hering, Carl; Kennelly, A.E. (1894). <a rel="nofollow" class="external text" href="https://books.google.nl/books?id=oUtVAAAAYAAJ&pg=PA418&dq=%22G+for+the+conductivity+as+that+is+about+the+only+letter+left+in+the+alphabet+which+would+not+create+confusion%22&hl=nl&sa=X&ved=2ahUKEwiU7LjK04vyAhVBwQIHHf7gA1kQ6AEwAHoECAQQAg#v=onepage&q=%22G%20for%20the%20conductivity%20as%20that%20is%20about%20the%20only%20letter%20left%20in%20the%20alphabet%20which%20would%20not%20create%20confusion%22&f=false">"Electric notation, abbreviation and symbols"</a>. <i>Transactions of the American Institute of Electrical Engineers</i>. <b>10</b>: 401–426.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Institute+of+Electrical+Engineers&rft.atitle=Electric+notation%2C+abbreviation+and+symbols&rft.volume=10&rft.pages=401-426&rft.date=1894&rft.aulast=Hering&rft.aufirst=Carl&rft.au=Kennelly%2C+A.E.&rft_id=https%3A%2F%2Fbooks.google.nl%2Fbooks%3Fid%3DoUtVAAAAYAAJ%26pg%3DPA418%26dq%3D%2522G%2Bfor%2Bthe%2Bconductivity%2Bas%2Bthat%2Bis%2Babout%2Bthe%2Bonly%2Bletter%2Bleft%2Bin%2Bthe%2Balphabet%2Bwhich%2Bwould%2Bnot%2Bcreate%2Bconfusion%2522%26hl%3Dnl%26sa%3DX%26ved%3D2ahUKEwiU7LjK04vyAhVBwQIHHf7gA1kQ6AEwAHoECAQQAg%23v%3Donepage%26q%3D%2522G%2520for%2520the%2520conductivity%2520as%2520that%2520is%2520about%2520the%2520only%2520letter%2520left%2520in%2520the%2520alphabet%2520which%2520would%2520not%2520create%2520confusion%2522%26f%3Dfalse&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATalk%3AElectrical+resistance+and+conductance" class="Z3988"></span></span> </li> </ol></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Talk:Electrical_resistance_and_conductance&oldid=1250074802">https://en.wikipedia.org/w/index.php?title=Talk:Electrical_resistance_and_conductance&oldid=1250074802</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:B-Class_level-4_vital_articles" title="Category:B-Class level-4 vital articles">B-Class level-4 vital articles</a></li><li><a href="/wiki/Category:Wikipedia_level-4_vital_articles_in_Physical_sciences" title="Category:Wikipedia level-4 vital articles in Physical sciences">Wikipedia level-4 vital articles in Physical sciences</a></li><li><a href="/wiki/Category:B-Class_vital_articles_in_Physical_sciences" title="Category:B-Class vital articles in Physical sciences">B-Class vital articles in Physical sciences</a></li><li><a href="/wiki/Category:B-Class_electronic_articles" title="Category:B-Class electronic articles">B-Class electronic articles</a></li><li><a href="/wiki/Category:High-importance_electronic_articles" title="Category:High-importance electronic articles">High-importance electronic articles</a></li><li><a href="/wiki/Category:WikiProject_Electronics_articles" title="Category:WikiProject Electronics articles">WikiProject Electronics articles</a></li><li><a href="/wiki/Category:B-Class_electrical_engineering_articles" title="Category:B-Class electrical engineering articles">B-Class electrical engineering articles</a></li><li><a href="/wiki/Category:High-importance_electrical_engineering_articles" title="Category:High-importance electrical engineering articles">High-importance electrical engineering articles</a></li><li><a href="/wiki/Category:Electrical_engineering_articles" title="Category:Electrical engineering articles">Electrical engineering articles</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden category: <ul><li><a href="/wiki/Category:All_Wikipedia_vital_articles" title="Category:All Wikipedia vital articles">All Wikipedia vital articles</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 8 October 2024, at 10:10<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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