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Energy and Momentum in Electrodynamics - Revision history
2026-04-10T03:14:59Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:30, 1 January 2017</td>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 13:21, 1 January 2017</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><em>The<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>distinction between kinetic and potential energy has never been made<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>clear in classical electrodynamics (CED). The long-range fields of CED<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>carry potential energy only because of their intimate connection with<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>the force laws. However, kinetic energy and momentum, which represent<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>mass in transport, are particle not field properties and hence<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>cannot be described by the fields of CED. It is<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>therefore clear that the Abraham ?momentum density?</em> <img border="0" alt="epsilon" align="bottom" src="http://physicsessays.aip.org/stockgif3/egr.gif" /><sub><span style="FONT-SIZE: x-small">0</span></sub><b>E</b> ? <b>B</b>,<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>''cannot represent mass density in transport''[[Category:Scientific Paper]]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><em>The<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>distinction between kinetic and potential energy has never been made<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>clear in classical electrodynamics (CED). The long-range fields of CED<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>carry potential energy only because of their intimate connection with<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>the force laws. However, kinetic energy and momentum, which represent<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>mass in transport, are particle not field properties and hence<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>cannot be described by the fields of CED. It is<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>therefore clear that the Abraham ?momentum density?</em> <img border="0" alt="epsilon" align="bottom" src="http://physicsessays.aip.org/stockgif3/egr.gif" /><sub><span style="FONT-SIZE: x-small">0</span></sub><b>E</b> ? <b>B</b>,<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>''cannot represent mass density in transport''</div></td></tr>
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<p><b>New page</b></p><div>{{Infobox paper<br />
| title = Energy and Momentum in Electrodynamics<br />
| author = [[D E McLennan]]<br />
| keywords = [[kinetic energy vs potential energy in classical electrodynamics]], [[lack of support for field momentum]]<br />
| published = 1988<br />
| journal = [[Physics Essays]]<br />
| volume = [[1]]<br />
| number = [[3]]<br />
| pages = 179-183<br />
}}<br />
<br />
==Abstract==<br />
<br />
<em>The<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>distinction between kinetic and potential energy has never been made<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>clear in classical electrodynamics (CED). The long-range fields of CED<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>carry potential energy only because of their intimate connection with<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>the force laws. However, kinetic energy and momentum, which represent<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>mass in transport, are particle not field properties and hence<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>cannot be described by the fields of CED. It is<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>therefore clear that the Abraham ?momentum density?</em> <img border="0" alt="epsilon" align="bottom" src="http://physicsessays.aip.org/stockgif3/egr.gif" /><sub><span style="FONT-SIZE: x-small">0</span></sub><b>E</b> ? <b>B</b>,<sup><span style="FONT-SIZE: x-small">&nbsp;</span></sup>''cannot represent mass density in transport''[[Category:Scientific Paper]]<br />
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[[Category:Electrodynamics]]</div>
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