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There are new developments in classical physics all the time. In some cases, “modern” physics (now almost 100 years old) provides a stronger foundation for classical phenomena: the color of copper, for example. In other cases, modern physics explores physical phenomena outside of our daily experience- the very fast, cold, small, or large." /><meta property="og:url" content="https://www.physicsforums.com/insights/tag/classical-physics/" /><meta property="og:site_name" content="Physics Forums Insights" /><meta property="og:image" content="https://www.physicsforums.com/insights/wp-content/uploads/2023/11/physics-forums-logo-og.webp" /><meta property="og:image:width" content="1200" /><meta property="og:image:height" content="630" /><meta property="og:image:type" content="image/webp" /><meta name="twitter:card" content="summary_large_image" /><meta name="twitter:site" content="@physicsforums" /> <script type="application/ld+json" class="yoast-schema-graph">{"@context":"https://schema.org","@graph":[{"@type":"CollectionPage","@id":"https://www.physicsforums.com/insights/tag/classical-physics/","url":"https://www.physicsforums.com/insights/tag/classical-physics/","name":"Articles on classical 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class="category-term-description"><h1>Classical Physics Articles</h1><p>Classical physics deals with phenomena we can experience and manipulate directly, with a minimum of apparatus. There are new developments in classical physics all the time.</p><p>In some cases, “modern” physics (now almost 100 years old) provides a stronger foundation for classical phenomena: the color of copper, for example. In other cases, modern physics explores physical phenomena outside of our daily experience- the very fast, cold, small, or large.</p></div><div class="entry-content-wrapper"><h3 class='post-title tag-page-post-type-title '>Tag Archive for: <span>classical physics</span></h3><div data-slideshow-options="{"animation":"fade","autoplay":false,"loop_autoplay":"once","interval":5,"loop_manual":"manual-endless","autoplay_stopper":false,"noNavigation":false,"show_slide_delay":90}" class='avia-content-slider avia-content-grid-active avia-content-slider1 avia-content-slider-odd avia-builder-el-no-sibling av-slideshow-ui av-control-default av-no-slider-navigation av-slideshow-manual av-loop-once av-loop-manual-endless ' itemscope="itemscope" itemtype="https://schema.org/Blog" ><div class="avia-content-slider-inner"><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-46242 slide-entry-overview slide-loop-1 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/aspects-behind-the-concept-of-dimension-in-various-fields/' data-rel='slide-1' class='slide-image' title='Aspects Behind the Concept of Dimension in Various Fields'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2022/07/pvsnp.png" class="wp-image-41832 avia-img-lazy-loading-not-41832 attachment-portfolio size-portfolio wp-post-image" alt="pvsnp" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2022/07/pvsnp.png" class="wp-image-41832 avia-img-lazy-loading-not-41832 attachment-portfolio size-portfolio wp-post-image" alt="pvsnp" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Aspects Behind the Concept of Dimension in Various Fields"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/aspects-behind-the-concept-of-dimension-in-various-fields/' title='Aspects Behind the Concept of Dimension in Various Fields'>Aspects Behind the Concept of Dimension in Various Fields</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2024-06-21T12:42:18-05:00" >June 21, 2024</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/aspects-behind-the-concept-of-dimension-in-various-fields/#comments'>2 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Abstract It took until the last century for physicists and mathematicians in the Netherlands to question the Euclidean concept of dimension as length,…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2022/07/pvsnp.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>fresh_42</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>fresh_42</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2024-06-21 12:42:18</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-12-06 21:31:12</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Aspects Behind the Concept of Dimension in Various Fields</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-44868 slide-entry-overview slide-loop-2 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/how-to-solve-a-multi-atwood-machine-assembly/' data-rel='slide-1' class='slide-image' title='How to Solve a Multi-Atwood Machine Assembly'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2024/02/Multi-Atwood-Machine-Assembly.png" class="wp-image-45414 avia-img-lazy-loading-not-45414 attachment-portfolio size-portfolio wp-post-image" alt="Multi-Atwood Machine Assembly" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2024/02/Multi-Atwood-Machine-Assembly.png" class="wp-image-45414 avia-img-lazy-loading-not-45414 attachment-portfolio size-portfolio wp-post-image" alt="Multi-Atwood Machine Assembly" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: How to Solve a Multi-Atwood Machine Assembly"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/how-to-solve-a-multi-atwood-machine-assembly/' title='How to Solve a Multi-Atwood Machine Assembly'>How to Solve a Multi-Atwood Machine Assembly</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2024-02-16T10:18:12-06:00" >February 16, 2024</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/how-to-solve-a-multi-atwood-machine-assembly/#comments'>2 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >IntroductionThe figure on the right shows a "double-double" Atwood machine with three ideal pulleys and four masses. All pulleys are released from…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2024/02/Multi-Atwood-Machine-Assembly.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>kuruman</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>kuruman</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2024-02-16 10:18:12</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-18 10:52:43</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>How to Solve a Multi-Atwood Machine Assembly</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-41870 slide-entry-overview slide-loop-3 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/how-to-measure-internal-resistance-of-a-battery/' data-rel='slide-1' class='slide-image' title='How to Measure Internal Resistance of a Battery'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2023/02/Measure-Internal-Resistance-of-Battery.png" class="wp-image-42846 avia-img-lazy-loading-not-42846 attachment-portfolio size-portfolio wp-post-image" alt="Measure Internal Resistance of Battery" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2023/02/Measure-Internal-Resistance-of-Battery.png" class="wp-image-42846 avia-img-lazy-loading-not-42846 attachment-portfolio size-portfolio wp-post-image" alt="Measure Internal Resistance of Battery" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: How to Measure Internal Resistance of a Battery"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/how-to-measure-internal-resistance-of-a-battery/' title='How to Measure Internal Resistance of a Battery'>How to Measure Internal Resistance of a Battery</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2023-02-14T08:49:27-06:00" >February 14, 2023</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/how-to-measure-internal-resistance-of-a-battery/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction A commonly encountered school-level Physics practical is the determination of the internal resistance of a battery - typically an AA or D…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2023/02/Measure-Internal-Resistance-of-Battery.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Neil Parker</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Neil Parker</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2023-02-14 08:49:27</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-18 09:46:45</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>How to Measure Internal Resistance of a Battery</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-42298 slide-entry-overview slide-loop-4 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/subtleties-overlooked-in-friction-questions-object-slides-down-ramp/' data-rel='slide-1' class='slide-image' title='Subtleties Overlooked in Friction Questions: Object Slides Down Ramp'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2022/12/object-slide-down-ramp-physics-1.png" class="wp-image-42325 avia-img-lazy-loading-not-42325 attachment-portfolio size-portfolio wp-post-image" alt="object slide down ramp physics" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2022/12/object-slide-down-ramp-physics-1.png" class="wp-image-42325 avia-img-lazy-loading-not-42325 attachment-portfolio size-portfolio wp-post-image" alt="object slide down ramp physics" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Subtleties Overlooked in Friction Questions: Object Slides Down Ramp"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/subtleties-overlooked-in-friction-questions-object-slides-down-ramp/' title='Subtleties Overlooked in Friction Questions: Object Slides Down Ramp'>Subtleties Overlooked in Friction Questions: Object Slides Down Ramp</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2022-12-06T09:22:09-06:00" >December 6, 2022</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/subtleties-overlooked-in-friction-questions-object-slides-down-ramp/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Problem statement (simplified) An object slides down a ramp at angle θ to encounter level ground. Both surfaces have kinetic friction: μ' on the ramp,…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2022/12/object-slide-down-ramp-physics-1.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Derek Bolton</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Derek Bolton</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2022-12-06 09:22:09</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2022-12-21 00:14:58</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Subtleties Overlooked in Friction Questions: Object Slides Down Ramp</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-41423 slide-entry-overview slide-loop-5 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/a-physics-misconception-with-gauss-law/' data-rel='slide-1' class='slide-image' title='A Physics Misconception with Gauss’ Law'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2022/06/gauss-law-misconceptions.png" class="wp-image-41690 avia-img-lazy-loading-not-41690 attachment-portfolio size-portfolio wp-post-image" alt="gauss law misconceptions" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2022/06/gauss-law-misconceptions.png" class="wp-image-41690 avia-img-lazy-loading-not-41690 attachment-portfolio size-portfolio wp-post-image" alt="gauss law misconceptions" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: A Physics Misconception with Gauss' Law"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/a-physics-misconception-with-gauss-law/' title='A Physics Misconception with Gauss’ Law'>A Physics Misconception with Gauss’ Law</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2022-06-12T09:34:50-05:00" >June 12, 2022</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/a-physics-misconception-with-gauss-law/#comments'>3 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction It is relatively common to see the following type of argument: The surface area is ##A## and the enclosed charge is ##Q##. The electric…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2022/06/gauss-law-misconceptions.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Orodruin</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Orodruin</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2022-06-12 09:34:50</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2022-06-12 09:34:50</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>A Physics Misconception with Gauss’ Law</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-40829 slide-entry-overview slide-loop-6 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/how-to-model-a-magnet-falling-through-a-solenoid/' data-rel='slide-1' class='slide-image' title='How to Model a Magnet Falling Through a Solenoid'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2022/05/model-magent.png" class="wp-image-41595 avia-img-lazy-loading-not-41595 attachment-portfolio size-portfolio wp-post-image" alt="model magnet" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2022/05/model-magent.png" class="wp-image-41595 avia-img-lazy-loading-not-41595 attachment-portfolio size-portfolio wp-post-image" alt="model magnet" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: How to Model a Magnet Falling Through a Solenoid"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/how-to-model-a-magnet-falling-through-a-solenoid/' title='How to Model a Magnet Falling Through a Solenoid'>How to Model a Magnet Falling Through a Solenoid</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2022-06-05T12:48:47-05:00" >June 5, 2022</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/how-to-model-a-magnet-falling-through-a-solenoid/#comments'>11 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction Modeling a magnet realistically is a task best done numerically. Even the simplified model of two separated disks with uniform surface…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2022/05/model-magent.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>kuruman</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>kuruman</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2022-06-05 12:48:47</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2022-06-11 07:07:53</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>How to Model a Magnet Falling Through a Solenoid</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-41012 slide-entry-overview slide-loop-7 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/how-can-we-jump-when-the-ground-does-no-work/' data-rel='slide-1' class='slide-image' title='How Can We Jump When the Ground Does No Work?'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2022/05/why-can-we-jump.png" class="wp-image-41451 avia-img-lazy-loading-not-41451 attachment-portfolio size-portfolio wp-post-image" alt="why can we jump" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2022/05/why-can-we-jump.png" class="wp-image-41451 avia-img-lazy-loading-not-41451 attachment-portfolio size-portfolio wp-post-image" alt="why can we jump" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: How Can We Jump When the Ground Does No Work?"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/how-can-we-jump-when-the-ground-does-no-work/' title='How Can We Jump When the Ground Does No Work?'>How Can We Jump When the Ground Does No Work?</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2022-05-30T16:09:36-05:00" >May 30, 2022</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/how-can-we-jump-when-the-ground-does-no-work/#comments'>20 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >It is relatively common on Physics Forums to see arguments that are effectively similar to the following: When we jump off the ground, the ground does…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2022/05/why-can-we-jump.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Orodruin</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Orodruin</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2022-05-30 16:09:36</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-18 09:41:49</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>How Can We Jump When the Ground Does No Work?</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-36697 slide-entry-overview slide-loop-8 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/maximizing-horizontal-range-of-a-projectile/' data-rel='slide-1' class='slide-image' title='Maximizing Horizontal Range of a Projectile'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2021/03/physics-cannonball-projectile.png" class="wp-image-36949 avia-img-lazy-loading-not-36949 attachment-portfolio size-portfolio wp-post-image" alt="physics cannonball projectile" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2021/03/physics-cannonball-projectile.png" class="wp-image-36949 avia-img-lazy-loading-not-36949 attachment-portfolio size-portfolio wp-post-image" alt="physics cannonball projectile" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Maximizing Horizontal Range of a Projectile"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/maximizing-horizontal-range-of-a-projectile/' title='Maximizing Horizontal Range of a Projectile'>Maximizing Horizontal Range of a Projectile</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2021-03-29T05:56:02-05:00" >March 29, 2021</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/maximizing-horizontal-range-of-a-projectile/#comments'>7 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction A recent homework problem that appeared in the forums was concerned with maximizing the horizontal range of a projectile subject to the launch…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2021/03/physics-cannonball-projectile.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Neil Parker</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Neil Parker</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2021-03-29 05:56:02</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-18 09:25:00</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Maximizing Horizontal Range of a Projectile</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-26631 slide-entry-overview slide-loop-9 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/why-bother-teaching-mechanical-energy-conservation/' data-rel='slide-1' class='slide-image' title='Why Bother Teaching Mechanical Energy Conservation?'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/mechanical-conservation-of-energy.png" class="wp-image-31654 avia-img-lazy-loading-not-31654 attachment-portfolio size-portfolio wp-post-image" alt="mechanical conservation of energy" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/mechanical-conservation-of-energy.png" class="wp-image-31654 avia-img-lazy-loading-not-31654 attachment-portfolio size-portfolio wp-post-image" alt="mechanical conservation of energy" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Why Bother Teaching Mechanical Energy Conservation?"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/why-bother-teaching-mechanical-energy-conservation/' title='Why Bother Teaching Mechanical Energy Conservation?'>Why Bother Teaching Mechanical Energy Conservation?</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2020-09-18T07:44:03-05:00" >September 18, 2020</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/why-bother-teaching-mechanical-energy-conservation/#comments'>7 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Note: It is assumed that the reader has read part I and part II of the series.Is Mechanical Energy Conservation Free of Ambiguity? Can We Do Better…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/12/mechanical-conservation-of-energy.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>kuruman</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>kuruman</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2020-09-18 07:44:03</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-09-30 09:08:20</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Why Bother Teaching Mechanical Energy Conservation?</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-26385 slide-entry-overview slide-loop-10 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/can-we-do-better-than-mechanical-energy-conservation/' data-rel='slide-1' class='slide-image' title='Can We Do Better Than Mechanical Energy Conservation?'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/11/energy_conservation_can_we_do_better.png" class="wp-image-29108 avia-img-lazy-loading-not-29108 attachment-portfolio size-portfolio wp-post-image" alt="energy conservation can we do better" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/11/energy_conservation_can_we_do_better.png" class="wp-image-29108 avia-img-lazy-loading-not-29108 attachment-portfolio size-portfolio wp-post-image" alt="energy conservation can we do better" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Can We Do Better Than Mechanical Energy Conservation?"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/can-we-do-better-than-mechanical-energy-conservation/' title='Can We Do Better Than Mechanical Energy Conservation?'>Can We Do Better Than Mechanical Energy Conservation?</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2020-03-17T13:53:45-05:00" >March 17, 2020</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/can-we-do-better-than-mechanical-energy-conservation/#comments'>6 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Note: It is assumed that the reader has read part I of the series. Introduction The ambiguity and flaws discussed in part I can be resolved using the…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/11/energy_conservation_can_we_do_better.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>kuruman</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>kuruman</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2020-03-17 13:53:45</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-09-30 09:18:25</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Can We Do Better Than Mechanical Energy Conservation?</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-28672 slide-entry-overview slide-loop-11 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/an-alternate-approach-to-solving-2-dimensional-elastic-collisions/' data-rel='slide-1' class='slide-image' title='An Alternate Approach to Solving 2-Dimensional Elastic Collisions'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2020/03/elastic_ball_collision.png" class="wp-image-28972 avia-img-lazy-loading-not-28972 attachment-portfolio size-portfolio wp-post-image" alt="elastic ball collision" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2020/03/elastic_ball_collision.png" class="wp-image-28972 avia-img-lazy-loading-not-28972 attachment-portfolio size-portfolio wp-post-image" alt="elastic ball collision" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: An Alternate Approach to Solving 2-Dimensional Elastic Collisions"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/an-alternate-approach-to-solving-2-dimensional-elastic-collisions/' title='An Alternate Approach to Solving 2-Dimensional Elastic Collisions'>An Alternate Approach to Solving 2-Dimensional Elastic Collisions</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2020-03-10T20:55:09-05:00" >March 10, 2020</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/an-alternate-approach-to-solving-2-dimensional-elastic-collisions/#comments'>4 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction This article follows on from the previous on an alternate approach to solving collision problems. In that article, we determined the equal…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2020/03/elastic_ball_collision.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Neil Parker</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Neil Parker</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2020-03-10 20:55:09</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 17:42:17</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>An Alternate Approach to Solving 2-Dimensional Elastic Collisions</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-26278 slide-entry-overview slide-loop-12 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/is-mechanical-energy-conservation-free-of-ambiguity/' data-rel='slide-1' class='slide-image' title='Is Mechanical Energy Conservation Free of Ambiguity?'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2020/02/energy-conservation-ambiguity.png" class="wp-image-28730 avia-img-lazy-loading-not-28730 attachment-portfolio size-portfolio wp-post-image" alt="energy conservation ambiguity" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2020/02/energy-conservation-ambiguity.png" class="wp-image-28730 avia-img-lazy-loading-not-28730 attachment-portfolio size-portfolio wp-post-image" alt="energy conservation ambiguity" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Is Mechanical Energy Conservation Free of Ambiguity?"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/is-mechanical-energy-conservation-free-of-ambiguity/' title='Is Mechanical Energy Conservation Free of Ambiguity?'>Is Mechanical Energy Conservation Free of Ambiguity?</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2020-03-02T19:57:48-06:00" >March 2, 2020</time></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction "Close to any question that is in the textbook, there is another question that has never been answered that is interesting." [Stephen Wolfram,…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2020/02/energy-conservation-ambiguity.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>kuruman</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>kuruman</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2020-03-02 19:57:48</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 17:40:38</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Is Mechanical Energy Conservation Free of Ambiguity?</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-28593 slide-entry-overview slide-loop-13 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/how-to-recognize-split-electric-fields/' data-rel='slide-1' class='slide-image' title='How to Recognize Split Electric Fields'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0OTUiIGhlaWdodD0iMzcxIiB2aWV3Qm94PSIwIDAgNDk1IDM3MSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="495" height="371" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2020/02/Battery-circuit-5-pdf.jpg" class="wp-image-30211 avia-img-lazy-loading-not-30211 attachment-portfolio size-portfolio wp-post-image" alt="" decoding="async" /><noscript><img fetchpriority="high" width="495" height="371" src="https://www.physicsforums.com/insights/wp-content/uploads/2020/02/Battery-circuit-5-pdf.jpg" class="wp-image-30211 avia-img-lazy-loading-not-30211 attachment-portfolio size-portfolio wp-post-image" alt="" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: How to Recognize Split Electric Fields"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/how-to-recognize-split-electric-fields/' title='How to Recognize Split Electric Fields'>How to Recognize Split Electric Fields</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2020-02-27T15:38:37-06:00" >February 27, 2020</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/how-to-recognize-split-electric-fields/#comments'>1 Comment</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction In a previous Insight, A New Interpretation of Dr. Walter Lewin’s Paradox, I introduced the fact that there are two kinds of E fields. …</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2020/02/Battery-circuit-5-pdf.jpg</span> <span itemprop='height'>961</span> <span itemprop='width'>1281</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>rude man</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>rude man</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2020-02-27 15:38:37</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2020-12-26 09:50:03</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>How to Recognize Split Electric Fields</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-28335 slide-entry-overview slide-loop-14 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/an-introduction-to-the-generation-of-mass-from-energy/' data-rel='slide-1' class='slide-image' title='An Introduction to the Generation of Mass from Energy'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2020/02/mass-generation.png" class="wp-image-28444 avia-img-lazy-loading-not-28444 attachment-portfolio size-portfolio wp-post-image" alt="Mass Generation" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2020/02/mass-generation.png" class="wp-image-28444 avia-img-lazy-loading-not-28444 attachment-portfolio size-portfolio wp-post-image" alt="Mass Generation" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: An Introduction to the Generation of Mass from Energy"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/an-introduction-to-the-generation-of-mass-from-energy/' title='An Introduction to the Generation of Mass from Energy'>An Introduction to the Generation of Mass from Energy</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2020-02-22T08:12:06-06:00" >February 22, 2020</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/an-introduction-to-the-generation-of-mass-from-energy/#comments'>28 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction This article is essentially an addition to the previous one on (mainly) inelastic collisions to include the particular case of inelastic…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2020/02/mass-generation.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Neil Parker</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Neil Parker</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2020-02-22 08:12:06</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 17:39:35</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>An Introduction to the Generation of Mass from Energy</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-28171 slide-entry-overview slide-loop-15 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/an-alternative-approach-to-solving-collision-problems/' data-rel='slide-1' class='slide-image' title='An Alternative Approach to Solving Collision Problems'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2020/02/Collision_problems.png" class="wp-image-28323 avia-img-lazy-loading-not-28323 attachment-portfolio size-portfolio wp-post-image" alt="Collision problems" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2020/02/Collision_problems.png" class="wp-image-28323 avia-img-lazy-loading-not-28323 attachment-portfolio size-portfolio wp-post-image" alt="Collision problems" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: An Alternative Approach to Solving Collision Problems"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/an-alternative-approach-to-solving-collision-problems/' title='An Alternative Approach to Solving Collision Problems'>An Alternative Approach to Solving Collision Problems</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2020-02-04T19:17:32-06:00" >February 4, 2020</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/an-alternative-approach-to-solving-collision-problems/#comments'>4 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction Collisions are very much a stock item in any school physics curriculum and students are generally taught about the use of the principles…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2020/02/Collision_problems.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Neil Parker</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Neil Parker</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2020-02-04 19:17:32</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 17:37:50</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>An Alternative Approach to Solving Collision Problems</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-26958 slide-entry-overview slide-loop-16 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/fundamentals-of-the-diffraction-grating-spectrometer/' data-rel='slide-1' class='slide-image' title='Learn the Fundamentals of the Diffraction Grating Spectrometer'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/Diffraction_Grating_Spectrometer.png" class="wp-image-27030 avia-img-lazy-loading-not-27030 attachment-portfolio size-portfolio wp-post-image" alt="Diffraction Grating Spectrometer." decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/Diffraction_Grating_Spectrometer.png" class="wp-image-27030 avia-img-lazy-loading-not-27030 attachment-portfolio size-portfolio wp-post-image" alt="Diffraction Grating Spectrometer." decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Learn the Fundamentals of the Diffraction Grating Spectrometer"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/fundamentals-of-the-diffraction-grating-spectrometer/' title='Learn the Fundamentals of the Diffraction Grating Spectrometer'>Learn the Fundamentals of the Diffraction Grating Spectrometer</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2019-12-04T21:13:37-06:00" >December 4, 2019</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/fundamentals-of-the-diffraction-grating-spectrometer/#comments'>11 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction In this article, we will discuss the fundamentals of the diffraction grating spectrometer. The operation of the instrument is based upon…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/12/Diffraction_Grating_Spectrometer.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Charles Link</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Charles Link</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2019-12-04 21:13:37</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 17:19:31</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Learn the Fundamentals of the Diffraction Grating Spectrometer</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-25928 slide-entry-overview slide-loop-17 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/bell-states-and-conservation-of-spin-angular-momentum/' data-rel='slide-1' class='slide-image' title='Exploring Bell States and Conservation of Spin Angular Momentum'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/10/Conservation_of_Spin_Angular_Momentum.png" class="wp-image-26064 avia-img-lazy-loading-not-26064 attachment-portfolio size-portfolio wp-post-image" alt="Conservation of Spin Angular Momentum" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/10/Conservation_of_Spin_Angular_Momentum.png" class="wp-image-26064 avia-img-lazy-loading-not-26064 attachment-portfolio size-portfolio wp-post-image" alt="Conservation of Spin Angular Momentum" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Exploring Bell States and Conservation of Spin Angular Momentum"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/bell-states-and-conservation-of-spin-angular-momentum/' title='Exploring Bell States and Conservation of Spin Angular Momentum'>Exploring Bell States and Conservation of Spin Angular Momentum</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2019-10-16T17:19:38-05:00" >October 16, 2019</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/bell-states-and-conservation-of-spin-angular-momentum/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >In a recent thread, I outlined how to compute the correlation function for the Bell basis states\begin{equation}\begin{split}|\psi_-\rangle &=…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/10/Conservation_of_Spin_Angular_Momentum.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Mark Stuckey</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Mark Stuckey</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2019-10-16 17:19:38</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2021-01-22 17:39:25</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Exploring Bell States and Conservation of Spin Angular Momentum</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-25315 slide-entry-overview slide-loop-18 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/understanding-bohrs-helium-lines/' data-rel='slide-1' class='slide-image' title='Understanding Bohr’s Helium Lines'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/08/Bohrs_Helium_Lines.png" class="wp-image-25549 avia-img-lazy-loading-not-25549 attachment-portfolio size-portfolio wp-post-image" alt="Bohr’s Helium Lines" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/08/Bohrs_Helium_Lines.png" class="wp-image-25549 avia-img-lazy-loading-not-25549 attachment-portfolio size-portfolio wp-post-image" alt="Bohr’s Helium Lines" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Understanding Bohr's Helium Lines"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/understanding-bohrs-helium-lines/' title='Understanding Bohr’s Helium Lines'>Understanding Bohr’s Helium Lines</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2019-08-16T07:47:58-05:00" >August 16, 2019</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/understanding-bohrs-helium-lines/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction In a previous article "Calculating the Balmer Alpha Line" we mentioned how accurate predictions of the spectral lines of singly ionized Helium…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/08/Bohrs_Helium_Lines.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Neil Parker</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Neil Parker</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2019-08-16 07:47:58</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 17:08:41</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Understanding Bohr’s Helium Lines</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-27925 slide-entry-overview slide-loop-19 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/what-is-impedance-a-5-minute-introduction/' data-rel='slide-1' class='slide-image' title='What is Impedance? A 5 Minute Introduction'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_impedance.png" class="wp-image-27926 avia-img-lazy-loading-not-27926 attachment-portfolio size-portfolio wp-post-image" alt="what is impedance" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_impedance.png" class="wp-image-27926 avia-img-lazy-loading-not-27926 attachment-portfolio size-portfolio wp-post-image" alt="what is impedance" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: What is Impedance? A 5 Minute Introduction"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/what-is-impedance-a-5-minute-introduction/' title='What is Impedance? A 5 Minute Introduction'>What is Impedance? A 5 Minute Introduction</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2019-08-02T10:25:30-05:00" >August 2, 2019</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/what-is-impedance-a-5-minute-introduction/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Definition/Summary The impedance of a load (a combination of components) in an AC current is a complex number [itex]Z\ =\ R+jX[/itex] where [itex]R[/itex]…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_impedance.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Multiple_Authors</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Multiple_Authors</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2019-08-02 10:25:30</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2020-12-25 16:04:44</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>What is Impedance? A 5 Minute Introduction</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-25294 slide-entry-overview slide-loop-20 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/learn-the-basics-of-dimensional-analysis/' data-rel='slide-1' class='slide-image' title='Learn the Basics of Dimensional Analysis'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/07/Learn_Dimensional_Analysis.png" class="wp-image-25306 avia-img-lazy-loading-not-25306 attachment-portfolio size-portfolio wp-post-image" alt="Learn Dimensional Analysis" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/07/Learn_Dimensional_Analysis.png" class="wp-image-25306 avia-img-lazy-loading-not-25306 attachment-portfolio size-portfolio wp-post-image" alt="Learn Dimensional Analysis" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Learn the Basics of Dimensional Analysis"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/learn-the-basics-of-dimensional-analysis/' title='Learn the Basics of Dimensional Analysis'>Learn the Basics of Dimensional Analysis</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2019-07-18T17:30:11-05:00" >July 18, 2019</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/learn-the-basics-of-dimensional-analysis/#comments'>6 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >As a university teacher and as a PF member, I have often noted that students are largely unaware of or not using dimensional analysis to help them in their…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/07/Learn_Dimensional_Analysis.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Orodruin</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Orodruin</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2019-07-18 17:30:11</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 17:05:50</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Learn the Basics of Dimensional Analysis</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-24814 slide-entry-overview slide-loop-21 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/calculating-the-balmer-alpha-line-atomic-hydrogen/' data-rel='slide-1' class='slide-image' title='Calculating the Balmer Alpha Line: Atomic Hydrogen'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/06/Balmer_Alpha_Line.png" class="wp-image-25124 avia-img-lazy-loading-not-25124 attachment-portfolio size-portfolio wp-post-image" alt="Balmer Alpha Line" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/06/Balmer_Alpha_Line.png" class="wp-image-25124 avia-img-lazy-loading-not-25124 attachment-portfolio size-portfolio wp-post-image" alt="Balmer Alpha Line" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Calculating the Balmer Alpha Line: Atomic Hydrogen"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/calculating-the-balmer-alpha-line-atomic-hydrogen/' title='Calculating the Balmer Alpha Line: Atomic Hydrogen'>Calculating the Balmer Alpha Line: Atomic Hydrogen</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2019-07-08T10:10:48-05:00" >July 8, 2019</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/calculating-the-balmer-alpha-line-atomic-hydrogen/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction Most readers acquainted with the hydrogen spectrum will be familiar with the set of lines in the visible spectrum representing transitions…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/06/Balmer_Alpha_Line.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Neil Parker</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Neil Parker</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2019-07-08 10:10:48</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 17:04:31</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Calculating the Balmer Alpha Line: Atomic Hydrogen</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-27921 slide-entry-overview slide-loop-22 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/what-is-potential-energy-a-5-minute-introduction/' data-rel='slide-1' class='slide-image' title='What is Potential Energy? A 5 Minute Introduction'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_potential_energy.png" class="wp-image-27922 avia-img-lazy-loading-not-27922 attachment-portfolio size-portfolio wp-post-image" alt="What is potential energy" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_potential_energy.png" class="wp-image-27922 avia-img-lazy-loading-not-27922 attachment-portfolio size-portfolio wp-post-image" alt="What is potential energy" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: What is Potential Energy? A 5 Minute Introduction"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/what-is-potential-energy-a-5-minute-introduction/' title='What is Potential Energy? A 5 Minute Introduction'>What is Potential Energy? A 5 Minute Introduction</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2019-06-25T10:06:22-05:00" >June 25, 2019</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/what-is-potential-energy-a-5-minute-introduction/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Definition/Summary Potential energy is simply another name for (minus) the work done by a conservative force.Since the work-energy theorem states…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_potential_energy.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Multiple_Authors</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Multiple_Authors</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2019-06-25 10:06:22</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2021-04-02 14:04:46</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>What is Potential Energy? A 5 Minute Introduction</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-27846 slide-entry-overview slide-loop-23 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/what-is-the-moment-of-inertia-a-10-minute-introduction/' data-rel='slide-1' class='slide-image' title='What is the Moment of Inertia? A 10 Minute Introduction'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_moment_of_inertia.png" class="wp-image-27847 avia-img-lazy-loading-not-27847 attachment-portfolio size-portfolio wp-post-image" alt="Moment of Inertia" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_moment_of_inertia.png" class="wp-image-27847 avia-img-lazy-loading-not-27847 attachment-portfolio size-portfolio wp-post-image" alt="Moment of Inertia" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: What is the Moment of Inertia? A 10 Minute Introduction"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/what-is-the-moment-of-inertia-a-10-minute-introduction/' title='What is the Moment of Inertia? A 10 Minute Introduction'>What is the Moment of Inertia? A 10 Minute Introduction</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2019-06-18T13:14:57-05:00" >June 18, 2019</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/what-is-the-moment-of-inertia-a-10-minute-introduction/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Definition/Summary The moment of Inertia is a property of rigid bodies.It relates rotational force (torque) to rotational acceleration in the same…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/12/what_is_moment_of_inertia.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Multiple_Authors</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Multiple_Authors</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2019-06-18 13:14:57</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2021-04-02 14:05:57</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>What is the Moment of Inertia? A 10 Minute Introduction</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-12685 slide-entry-overview slide-loop-24 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/exploring-spectral-paradox/' data-rel='slide-1' class='slide-image' title='Exploring the Spectral Paradox in Physics'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2017/05/SpectralParadox.png" class="wp-image-14435 avia-img-lazy-loading-not-14435 attachment-portfolio size-portfolio wp-post-image" alt="SpectralParadox" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2017/05/SpectralParadox.png" class="wp-image-14435 avia-img-lazy-loading-not-14435 attachment-portfolio size-portfolio wp-post-image" alt="SpectralParadox" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Exploring the Spectral Paradox in Physics"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/exploring-spectral-paradox/' title='Exploring the Spectral Paradox in Physics'>Exploring the Spectral Paradox in Physics</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2017-05-01T15:33:02-05:00" >May 1, 2017</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/exploring-spectral-paradox/#comments'>17 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >In terms of wavelength, peak solar radiation occurs at about 500 nm. Interestingly, this is well within the range of human vision. When solar radiation…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2017/05/SpectralParadox.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>trilobite</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>trilobite</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2017-05-01 15:33:02</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 14:48:02</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Exploring the Spectral Paradox in Physics</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-12159 slide-entry-overview slide-loop-25 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/permanent-magnets-ferromagnetism-magnetic-surface-currents/' data-rel='slide-1' class='slide-image' title='Permanent Magnets Explained by Magnetic Surface Currents'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2017/01/magnet.png" class="wp-image-12259 avia-img-lazy-loading-not-12259 attachment-portfolio size-portfolio wp-post-image" alt="magnet" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2017/01/magnet.png" class="wp-image-12259 avia-img-lazy-loading-not-12259 attachment-portfolio size-portfolio wp-post-image" alt="magnet" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Permanent Magnets Explained by Magnetic Surface Currents"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/permanent-magnets-ferromagnetism-magnetic-surface-currents/' title='Permanent Magnets Explained by Magnetic Surface Currents'>Permanent Magnets Explained by Magnetic Surface Currents</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2017-01-16T15:50:11-06:00" >January 16, 2017</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/permanent-magnets-ferromagnetism-magnetic-surface-currents/#comments'>38 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction: The purpose of this Insight is to explain permanent magnets in a way that is in agreement with advanced textbooks on the subject, and that…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2017/01/magnet.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Charles Link</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Charles Link</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2017-01-16 15:50:11</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 09:55:55</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Permanent Magnets Explained by Magnetic Surface Currents</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-11919 slide-entry-overview slide-loop-26 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/fabry-perot-michelson-interferometry-fundamental-approach/' data-rel='slide-1' class='slide-image' title='Fabry-Perot and Michelson Interferometry: A Fundamental Approach'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2017/01/inferometer.png" class="wp-image-12025 avia-img-lazy-loading-not-12025 attachment-portfolio size-portfolio wp-post-image" alt="inferometer" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2017/01/inferometer.png" class="wp-image-12025 avia-img-lazy-loading-not-12025 attachment-portfolio size-portfolio wp-post-image" alt="inferometer" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Fabry-Perot and Michelson Interferometry: A Fundamental Approach"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/fabry-perot-michelson-interferometry-fundamental-approach/' title='Fabry-Perot and Michelson Interferometry: A Fundamental Approach'>Fabry-Perot and Michelson Interferometry: A Fundamental Approach</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2017-01-02T16:47:43-06:00" >January 2, 2017</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/fabry-perot-michelson-interferometry-fundamental-approach/#comments'>14 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Fabry-Perot Effect: The Fabry-Perot effect is usually treated in most optics textbooks as the interference that results from multiple reflections of the…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2017/01/inferometer.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Charles Link</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Charles Link</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2017-01-02 16:47:43</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2021-04-17 17:49:16</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Fabry-Perot and Michelson Interferometry: A Fundamental Approach</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-10861 slide-entry-overview slide-loop-27 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/explaining-rolling-motion/' data-rel='slide-1' class='slide-image' title='Learn The Basics of Rolling Motion'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2016/09/rollingmotion.png" class="wp-image-11017 avia-img-lazy-loading-not-11017 attachment-portfolio size-portfolio wp-post-image" alt="rollingmotion" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2016/09/rollingmotion.png" class="wp-image-11017 avia-img-lazy-loading-not-11017 attachment-portfolio size-portfolio wp-post-image" alt="rollingmotion" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Learn The Basics of Rolling Motion"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/explaining-rolling-motion/' title='Learn The Basics of Rolling Motion'>Learn The Basics of Rolling Motion</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2016-09-28T18:31:26-05:00" >September 28, 2016</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/explaining-rolling-motion/#comments'>50 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Although rolling wheels are everywhere, when most people are asked "what is the axis of rotation of a wheel that rolls without slipping?", they will answer…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2016/09/rollingmotion.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>kuruman</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>kuruman</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2016-09-28 18:31:26</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 09:42:21</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Learn The Basics of Rolling Motion</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-10590 slide-entry-overview slide-loop-28 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/analysis-road-capacity/' data-rel='slide-1' class='slide-image' title='Why Road Capacity Is Almost Independent of the Speed Limit'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2016/08/carcapacity.png" class="wp-image-10598 avia-img-lazy-loading-not-10598 attachment-portfolio size-portfolio wp-post-image" alt="carcapacity" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2016/08/carcapacity.png" class="wp-image-10598 avia-img-lazy-loading-not-10598 attachment-portfolio size-portfolio wp-post-image" alt="carcapacity" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Why Road Capacity Is Almost Independent of the Speed Limit"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/analysis-road-capacity/' title='Why Road Capacity Is Almost Independent of the Speed Limit'>Why Road Capacity Is Almost Independent of the Speed Limit</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2016-08-29T11:53:26-05:00" >August 29, 2016</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/analysis-road-capacity/#comments'>29 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Let us start with a familiar situation. Take a familiar part of a road, for example, the one from your home to work. How long will it take you to drive…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2016/08/carcapacity.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Svein</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Svein</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2016-08-29 11:53:26</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-08-17 09:34:01</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Why Road Capacity Is Almost Independent of the Speed Limit</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-9936 slide-entry-overview slide-loop-29 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/elementary-construction-angular-velocity/' data-rel='slide-1' class='slide-image' title='Elementary Construction of the Angular Velocity'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2016/06/angularvelocity.png" class="wp-image-9942 avia-img-lazy-loading-not-9942 attachment-portfolio size-portfolio wp-post-image" alt="angularvelocity" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2016/06/angularvelocity.png" class="wp-image-9942 avia-img-lazy-loading-not-9942 attachment-portfolio size-portfolio wp-post-image" alt="angularvelocity" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Elementary Construction of the Angular Velocity"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/elementary-construction-angular-velocity/' title='Elementary Construction of the Angular Velocity'>Elementary Construction of the Angular Velocity</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2016-06-02T17:06:59-05:00" >June 2, 2016</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/elementary-construction-angular-velocity/#comments'>1 Comment</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Physics books seldom contain an accurate definitions of the angular velocity of a rigid body. I believe that the following construction is as simple as…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2016/06/angularvelocity.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>wrobel</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>wrobel</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2016-06-02 17:06:59</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2021-04-17 15:48:05</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Elementary Construction of the Angular Velocity</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-7696 slide-entry-overview slide-loop-30 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/secondary-forces/' data-rel='slide-1' class='slide-image' title='Introduction to the Secondary Forces in Physics'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2016/02/secondaryforces.png" class="wp-image-8318 avia-img-lazy-loading-not-8318 attachment-portfolio size-portfolio wp-post-image" alt="secondaryforces" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2016/02/secondaryforces.png" class="wp-image-8318 avia-img-lazy-loading-not-8318 attachment-portfolio size-portfolio wp-post-image" alt="secondaryforces" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Introduction to the Secondary Forces in Physics"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/secondary-forces/' title='Introduction to the Secondary Forces in Physics'>Introduction to the Secondary Forces in Physics</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2016-02-06T19:24:39-06:00" >February 6, 2016</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/secondary-forces/#comments'>7 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Many are familiar with the "fundamental forces" of nature: gravity, electromagnetism, and the strong and weak nuclear forces. Three of these tend to bind…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2016/02/secondaryforces.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Alex Klotz</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Alex Klotz</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2016-02-06 19:24:39</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2025-02-11 20:00:33</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Introduction to the Secondary Forces in Physics</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-7397 slide-entry-overview slide-loop-31 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/rainbows-not-vampires/' data-rel='slide-1' class='slide-image' title='Exploration into the Physics of Rainbows'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2016/01/rainbows1.png" class="wp-image-7428 avia-img-lazy-loading-not-7428 attachment-portfolio size-portfolio wp-post-image" alt="rainbows" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2016/01/rainbows1.png" class="wp-image-7428 avia-img-lazy-loading-not-7428 attachment-portfolio size-portfolio wp-post-image" alt="rainbows" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Exploration into the Physics of Rainbows"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/rainbows-not-vampires/' title='Exploration into the Physics of Rainbows'>Exploration into the Physics of Rainbows</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2016-01-05T14:57:46-06:00" >January 5, 2016</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/rainbows-not-vampires/#comments'>88 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >For several years, I have been contemplating this beautiful picture by photographer Brian McPhee. I have a personal interest in the photograph because…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2016/01/rainbows1.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>anorlunda</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>anorlunda</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2016-01-05 14:57:46</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2025-01-26 09:29:39</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Exploration into the Physics of Rainbows</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-5805 slide-entry-overview slide-loop-32 slide-parity-even av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/do-photons-move-slower-in-a-solid-medium/' data-rel='slide-1' class='slide-image' title='Do Photons Move Slower in a Solid Medium?'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2015/10/photonsmedium.png" class="wp-image-5806 avia-img-lazy-loading-not-5806 attachment-portfolio size-portfolio wp-post-image" alt="photonsmedium" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2015/10/photonsmedium.png" class="wp-image-5806 avia-img-lazy-loading-not-5806 attachment-portfolio size-portfolio wp-post-image" alt="photonsmedium" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Do Photons Move Slower in a Solid Medium?"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/do-photons-move-slower-in-a-solid-medium/' title='Do Photons Move Slower in a Solid Medium?'>Do Photons Move Slower in a Solid Medium?</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2015-10-12T03:01:41-05:00" >October 12, 2015</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/do-photons-move-slower-in-a-solid-medium/#comments'>5 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >This question appears often because it has been shown that in a normal, dispersive solid such as glass, the speed of light is slower than it is in a vacuum.…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2015/10/photonsmedium.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>ZapperZ</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>ZapperZ</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2015-10-12 03:01:41</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-11-24 12:04:04</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Do Photons Move Slower in a Solid Medium?</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-4857 slide-entry-overview slide-loop-33 slide-parity-odd av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/scaling-laws-speed-animals/' data-rel='slide-1' class='slide-image' title='Exploring a Paper on Scaling Laws and the Speed of Animals'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2015/09/animalspeeds.png" class="wp-image-4872 avia-img-lazy-loading-not-4872 attachment-portfolio size-portfolio wp-post-image" alt="animal speeds" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2015/09/animalspeeds.png" class="wp-image-4872 avia-img-lazy-loading-not-4872 attachment-portfolio size-portfolio wp-post-image" alt="animal speeds" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Exploring a Paper on Scaling Laws and the Speed of Animals"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/scaling-laws-speed-animals/' title='Exploring a Paper on Scaling Laws and the Speed of Animals'>Exploring a Paper on Scaling Laws and the Speed of Animals</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2015-09-04T13:35:17-05:00" >September 4, 2015</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/scaling-laws-speed-animals/#comments'>19 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Introduction In a recent American Journal of Physics issue, I read an interesting paper by Nicole Meyer-Vernet and Jean-Pierre Rospars examining the top…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2015/09/animalspeeds.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Alex Klotz</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Alex Klotz</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2015-09-04 13:35:17</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2025-02-11 19:47:49</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Exploring a Paper on Scaling Laws and the Speed of Animals</span></span></span></article></div><div class="slide-entry-wrap"><article class='slide-entry flex_column post-entry post-entry-2558 slide-entry-overview slide-loop-34 slide-parity-odd av_one_third first real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/frequently-made-errors-pseudo-resultant-forces/' data-rel='slide-1' class='slide-image' title='Frequently Made Errors: Pseudo and Resultant Forces'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2015/05/Coriolis.png" class="wp-image-2938 avia-img-lazy-loading-not-2938 attachment-portfolio size-portfolio wp-post-image" alt="Coriolis" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2015/05/Coriolis.png" class="wp-image-2938 avia-img-lazy-loading-not-2938 attachment-portfolio size-portfolio wp-post-image" alt="Coriolis" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Frequently Made Errors: Pseudo and Resultant Forces"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/frequently-made-errors-pseudo-resultant-forces/' title='Frequently Made Errors: Pseudo and Resultant Forces'>Frequently Made Errors: Pseudo and Resultant Forces</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2015-05-26T13:37:49-05:00" >May 26, 2015</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/frequently-made-errors-pseudo-resultant-forces/#comments'>12 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >  1. Real versus Fictitious Pseudo, or "fictitious", forces can arise when a non-inertial frame of reference is used. Using a non-inertial frame…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2015/05/Coriolis.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Derek Bolton</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Derek Bolton</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2015-05-26 13:37:49</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2021-04-17 09:01:53</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Frequently Made Errors: Pseudo and Resultant Forces</span></span></span></article><article class='slide-entry flex_column post-entry post-entry-21981 slide-entry-overview slide-loop-35 slide-parity-even post-entry-last av_one_third real-thumbnail posttype-post post-format-standard' itemscope="itemscope" itemtype="https://schema.org/BlogPosting" itemprop="blogPost" ><a href='https://www.physicsforums.com/insights/physics-in-hand-to-hand-combat/' data-rel='slide-1' class='slide-image' title='Learn the Physics of Hand-to-Hand Combat'><img data-lazyloaded="1" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDAiIGhlaWdodD0iMTM1IiB2aWV3Qm94PSIwIDAgMjQwIDEzNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==" fetchpriority="high" width="240" height="135" data-src="https://www.physicsforums.com/insights/wp-content/uploads/2018/09/hand_to_hand_combat.png" class="wp-image-21983 avia-img-lazy-loading-not-21983 attachment-portfolio size-portfolio wp-post-image" alt="hand_to_hand_combat" decoding="async" /><noscript><img fetchpriority="high" width="240" height="135" src="https://www.physicsforums.com/insights/wp-content/uploads/2018/09/hand_to_hand_combat.png" class="wp-image-21983 avia-img-lazy-loading-not-21983 attachment-portfolio size-portfolio wp-post-image" alt="hand_to_hand_combat" decoding="async" /></noscript></a><div class="slide-content"><header class="entry-content-header" aria-label="Slide: Learn the Physics of Hand-to-Hand Combat"><h3 class='slide-entry-title entry-title ' itemprop="headline" ><a href='https://www.physicsforums.com/insights/physics-in-hand-to-hand-combat/' title='Learn the Physics of Hand-to-Hand Combat'>Learn the Physics of Hand-to-Hand Combat</a></h3><span class="av-vertical-delimiter"></span></header><div class="slide-meta"><time class='slide-meta-time updated' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >September 13, 2014</time><div class="slide-meta-del">/</div><div class="slide-meta-comments"><a href='https://www.physicsforums.com/insights/physics-in-hand-to-hand-combat/#respond'>0 Comments</a></div></div><div class='slide-entry-excerpt entry-content' itemprop="text" >Physics of Hand-to-Hand Combat Key PointsMartial arts effectively use principles of physics to achieve goals quickly and forcefully. Athletic…</div></div><footer class="entry-footer"></footer><span class='hidden'> <span class='av-structured-data' itemprop="image" itemscope="itemscope" itemtype="https://schema.org/ImageObject" > <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2018/09/hand_to_hand_combat.png</span> <span itemprop='height'>135</span> <span itemprop='width'>240</span> </span> <span class='av-structured-data' itemprop="publisher" itemtype="https://schema.org/Organization" itemscope="itemscope" > <span itemprop='name'>Greg Bernhardt</span> <span itemprop='logo' itemscope itemtype='https://schema.org/ImageObject'> <span itemprop='url'>https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png</span> </span> </span><span class='av-structured-data' itemprop="author" itemscope="itemscope" itemtype="https://schema.org/Person" ><span itemprop='name'>Greg Bernhardt</span></span><span class='av-structured-data' itemprop="datePublished" datetime="2014-09-13T15:28:30-05:00" >2014-09-13 15:28:30</span><span class='av-structured-data' itemprop="dateModified" itemtype="https://schema.org/dateModified" >2024-09-26 07:39:07</span><span class='av-structured-data' itemprop="mainEntityOfPage" itemtype="https://schema.org/mainEntityOfPage" ><span itemprop='name'>Learn the Physics of Hand-to-Hand Combat</span></span></span></article></div></div></div></div></main><aside class='sidebar sidebar_right smartphones_sidebar_active alpha units' aria-label="Sidebar" role="complementary" itemscope="itemscope" itemtype="https://schema.org/WPSideBar" ><div class="inner_sidebar extralight-border"><section id="custom_html-2" class="widget_text widget clearfix widget_custom_html"><div class="textwidget custom-html-widget"><h2 class="widgettitle">Trending Articles</h2><ul class="wpp-list wpp-sunset"><li class="" style="--item-position: 1;--total-items: 10"><div class="item-position"></div><div class="item-data"><a href="https://www.physicsforums.com/insights/can-see-atom/" class="wpp-post-title" target="_self">Can We See an Atom?</a></div></li><li class="" style="--item-position: 2;--total-items: 10"><div class="item-position"></div><div class="item-data"><a href="https://www.physicsforums.com/insights/lcevc-8k-tv/" class="wpp-post-title" target="_self">The LCEVC Coding Standard and 8K Television</a></div></li><li class="" style="--item-position: 3;--total-items: 10"><div class="item-position"></div><div class="item-data"><a href="https://www.physicsforums.com/insights/what-is-a-tensor/" class="wpp-post-title" target="_self">What Is a Tensor? 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