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id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="כלים אישיים" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">כלים אישיים</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="תפריט משתמש" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_he.wikipedia.org&uselang=he"><span>תרומה לוויקיפדיה</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%D7%9E%D7%99%D7%95%D7%97%D7%93:%D7%94%D7%A8%D7%A9%D7%9E%D7%94_%D7%9C%D7%97%D7%A9%D7%91%D7%95%D7%9F&returnto=%D7%A9%D7%99%D7%97%D7%94%3A%D7%9E%D7%92%D7%A0%D7%98" title="מומלץ ליצור חשבון ולהיכנס אליו, אך אין חובה לעשות זאת"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>יצירת חשבון</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%D7%9E%D7%99%D7%95%D7%97%D7%93:%D7%9B%D7%A0%D7%99%D7%A1%D7%94_%D7%9C%D7%97%D7%A9%D7%91%D7%95%D7%9F&returnto=%D7%A9%D7%99%D7%97%D7%94%3A%D7%9E%D7%92%D7%A0%D7%98" title="מומלץ להיכנס לחשבון, אך אין חובה לעשות זאת [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn 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data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">תוכן עניינים</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">העברה לסרגל הצד</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">הסתרה</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">התחלה</div> </a> </li> <li id="toc-משיכה_למתכות_שונות" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#משיכה_למתכות_שונות"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>משיכה למתכות שונות</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">תגובה אחת</span> <ul id="toc-משיכה_למתכות_שונות-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-אחלה" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#אחלה"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>אחלה</span> </div> </a> <ul id="toc-אחלה-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="תוכן עניינים" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="מצב תוכן העניינים" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">מצב תוכן העניינים</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-namespace">שיחה</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">מגנט</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang mw-portlet-lang-icon-only" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector-empty" aria-label="הערך הזה קיים רק בשפה הזאת. מוזמנים להוסיף את הערך לשפות אחרות" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only mw-portlet-lang-heading-empty" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language mw-ui-icon-wikimedia-language"></span> <span class="vector-dropdown-label-text">הוספת שפות</span> </label> <div class="vector-dropdown-content"> <div class="mw-portlet-empty-language-selector-body"> תוכן הדף אינו נתמך בשפות אחרות. </div> </div> </div> <a href="/w/index.php?title=%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98&action=edit&section=new" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive" id="ca-addsection" data-event-name="addsection-header"><span class="vector-icon mw-ui-icon-speechBubbleAdd-progressive mw-ui-icon-wikimedia-speechBubbleAdd-progressive"></span> <span>הוספת נושא</span> </a> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="מרחבי שם"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="vector-tab-noicon mw-list-item"><a href="/wiki/%D7%9E%D7%92%D7%A0%D7%98" title="צפייה בדף התוכן [c]" accesskey="c"><span>ערך</span></a></li><li id="ca-talk" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98" rel="discussion" title="שיחה על דף התוכן [t]" accesskey="t"><span>שיחה</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="שינוי הגוון השפה" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">עברית</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="צפיות"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98"><span>קריאה</span></a></li><li id="ca-edit" class="istalk vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98&action=edit" title="עריכת קוד המקור של הדף הזה [e]" accesskey="e"><span>עריכת קוד מקור</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98&action=history" title="גרסאות קודמות של דף זה [h]" accesskey="h"><span>גרסאות קודמות</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="כלי דף"> <div 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data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">כלים</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">העברה לסרגל הצד</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">הסתרה</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="אפשרויות נוספות" > <div class="vector-menu-heading"> פעולות </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98"><span>קריאה</span></a></li><li id="ca-more-edit" class="istalk 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data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">מראה</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">העברה לסרגל הצד</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">הסתרה</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">מתוך ויקיפדיה, האנציקלופדיה החופשית</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><div class="ext-discussiontools-init-pageframe-latestcomment">תגובה אחרונה: <a href="#c-95.86.103.164-2012-05-15T11:41:00.000Z-משיכה_למתכות_שונות">לפני 12 שנים</a> מאת 95.86.103.164 בנושא <a href="#משיכה_למתכות_שונות">משיכה למתכות שונות</a></div></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-rtl mw-parser-output" lang="he" dir="rtl"><span data-mw-thread-id="h--2009-11-10T22:51:00.000Z"><span data-mw-comment-start="" id="h--2009-11-10T22:51:00.000Z"></span><span data-mw-comment-end="h--2009-11-10T22:51:00.000Z"></span></span><p><span data-mw-comment-start="" id="c-Setreset-2009-11-10T22:51:00.000Z"></span>האם לא יהיה עדיף לאחד אלקטרו-מגנט ומגנט לערך אחד? <a href="/wiki/%D7%9E%D7%A9%D7%AA%D7%9E%D7%A9:%D7%99%D7%95%D7%91%D7%9C_%D7%9E%D7%93%D7%A8" title="משתמש:יובל מדר">יובל מדר</a> </p><p>הגיוני <a href="/wiki/%D7%9E%D7%A9%D7%AA%D7%9E%D7%A9:Izi" title="משתמש:Izi">איזי</a> 18:57, 21 יולי 2004 (UTC) </p><p><br/> "ללא כניסה לפרטים, ההגדרה הרשמית בנוגע למונחים קוטב צפוני וקוטב דרומי נקבעים על ידי אלקטרומגנט ו”חוק יד ימין”, וללא התייחסות לכיוון השדה המגנטי של כדור הארץ." </p> <dl><dd>אפשר בכל זאת להיכנס לפרטים? כל כך הרבה כתוב על הקטבים ואין הגדרה רשמית? אפשר לחשוב שחוק יד ימין הוא ברמה של תורת הקוונטים</dd></dl> <p>כן, כדאי לאחד את האלקטרומגנט עם המגנט, אבל להשאיר ערך מורחב-אלקטרומגנט </p><p>לא רצוי לאחד, אין כפילות בין הערכים. <a href="/wiki/%D7%9E%D7%A9%D7%AA%D7%9E%D7%A9:Setreset" title="משתמש:Setreset">Setreset</a> - <a href="/wiki/%D7%A9%D7%99%D7%97%D7%AA_%D7%9E%D7%A9%D7%AA%D7%9E%D7%A9:Setreset" title="שיחת משתמש:Setreset">שיחה</a> <a href="https://he.wikipedia.org/wiki/%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98#c-Setreset-2009-11-10T22:51:00.000Z" class="ext-discussiontools-init-timestamplink">00:51, 11 בנובמבר 2009 (IST)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Setreset-2009-11-10T22:51:00.000Z"><span id="ooui-php-1" class="ext-discussiontools-init-replybutton oo-ui-widget oo-ui-widget-enabled oo-ui-buttonElement oo-ui-buttonElement-frameless oo-ui-labelElement oo-ui-flaggedElement-progressive oo-ui-buttonWidget" data-ooui='{"_":"OO.ui.ButtonWidget","rel":["nofollow"],"framed":false,"label":"\u05ea\u05d2\u05d5\u05d1\u05d4","flags":["progressive"],"classes":["ext-discussiontools-init-replybutton"]}'><a role="button" tabindex="0" rel="nofollow" class="oo-ui-buttonElement-button"><span class="oo-ui-iconElement-icon oo-ui-iconElement-noIcon oo-ui-image-progressive"></span><span class="oo-ui-labelElement-label">תגובה</span><span class="oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator oo-ui-image-progressive"></span></a></span></span><span data-mw-comment-end="c-Setreset-2009-11-10T22:51:00.000Z"></span> </p><p>--> מישהו יודע איך אפשר לבודד שדה מגנטי? </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="משיכה_למתכות_שונות" data-mw-thread-id="h-משיכה_למתכות_שונות-2012-05-15T11:41:00.000Z"><span id=".D7.9E.D7.A9.D7.99.D7.9B.D7.94_.D7.9C.D7.9E.D7.AA.D7.9B.D7.95.D7.AA_.D7.A9.D7.95.D7.A0.D7.95.D7.AA"></span><span data-mw-comment-start="" id="h-משיכה_למתכות_שונות-2012-05-15T11:41:00.000Z"></span>משיכה למתכות שונות<span data-mw-comment-end="h-משיכה_למתכות_שונות-2012-05-15T11:41:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98&action=edit&section=1" title="עריכת קוד המקור של הפרק: משיכה למתכות שונות"><span>עריכת קוד מקור</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"><span class='ext-discussiontools-init-section-metaitem ext-discussiontools-init-section-timestampLabel'>תגובה אחרונה: <a href="#c-95.86.103.164-2012-05-15T11:41:00.000Z-משיכה_למתכות_שונות">לפני 12 שנים</a></span><span class='ext-discussiontools-init-section-metaitem ext-discussiontools-init-section-commentCountLabel'>תגובה אחת</span><span class='ext-discussiontools-init-section-metaitem ext-discussiontools-init-section-authorCountLabel'>אדם אחד בשיחה</span></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-95.86.103.164-2012-05-15T11:41:00.000Z-משיכה_למתכות_שונות"></span>האם מישהו יודע האם מגנט נמשך ל: '<i>פליז, נחושת, ברונזה ועופרת?</i>--<a href="/wiki/%D7%9E%D7%99%D7%95%D7%97%D7%93:%D7%AA%D7%A8%D7%95%D7%9E%D7%95%D7%AA/95.86.103.164" title="מיוחד:תרומות/95.86.103.164">95.86.103.164</a> <a href="https://he.wikipedia.org/wiki/%D7%A9%D7%99%D7%97%D7%94:%D7%9E%D7%92%D7%A0%D7%98#c-95.86.103.164-2012-05-15T11:41:00.000Z-משיכה_למתכות_שונות" class="ext-discussiontools-init-timestamplink">14:41, 15 במאי 2012 (IDT)</a>[[קובץ:]] (לזהב וכסף ניסיתי וזה לא נמשך) תודה<span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-95.86.103.164-2012-05-15T11:41:00.000Z-משיכה_למתכות_שונות"><span id="ooui-php-2" class="ext-discussiontools-init-replybutton oo-ui-widget oo-ui-widget-enabled oo-ui-buttonElement oo-ui-buttonElement-frameless oo-ui-labelElement oo-ui-flaggedElement-progressive oo-ui-buttonWidget" data-ooui='{"_":"OO.ui.ButtonWidget","rel":["nofollow"],"framed":false,"label":"\u05ea\u05d2\u05d5\u05d1\u05d4","flags":["progressive"],"classes":["ext-discussiontools-init-replybutton"]}'><a role="button" tabindex="0" rel="nofollow" class="oo-ui-buttonElement-button"><span class="oo-ui-iconElement-icon oo-ui-iconElement-noIcon oo-ui-image-progressive"></span><span class="oo-ui-labelElement-label">תגובה</span><span class="oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator oo-ui-image-progressive"></span></a></span></span><span data-mw-comment-end="c-95.86.103.164-2012-05-15T11:41:00.000Z-משיכה_למתכות_שונות"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="אחלה" data-mw-thread-id="h-אחלה"><span id=".D7.90.D7.97.D7.9C.D7.94"></span><span data-mw-comment-start="" id="h-אחלה"></span>אחלה<span 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