Energy and Momentum in Electrodynamics: Difference between revisions
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==Abstract== | ==Abstract== | ||
<em>The<sup><span style="FONT-SIZE: x-small"> </span></sup>distinction between kinetic and potential energy has never been made<sup><span style="FONT-SIZE: x-small"> </span></sup>clear in classical electrodynamics (CED). The long-range fields of CED<sup><span style="FONT-SIZE: x-small"> </span></sup>carry potential energy only because of their intimate connection with<sup><span style="FONT-SIZE: x-small"> </span></sup>the force laws. However, kinetic energy and momentum, which represent<sup><span style="FONT-SIZE: x-small"> </span></sup>mass in transport, are particle not field properties and hence<sup><span style="FONT-SIZE: x-small"> </span></sup>cannot be described by the fields of CED. It is<sup><span style="FONT-SIZE: x-small"> </span></sup>therefore clear that the Abraham | <em>The<sup><span style="FONT-SIZE: x-small"> </span></sup>distinction between kinetic and potential energy has never been made<sup><span style="FONT-SIZE: x-small"> </span></sup>clear in classical electrodynamics (CED). The long-range fields of CED<sup><span style="FONT-SIZE: x-small"> </span></sup>carry potential energy only because of their intimate connection with<sup><span style="FONT-SIZE: x-small"> </span></sup>the force laws. However, kinetic energy and momentum, which represent<sup><span style="FONT-SIZE: x-small"> </span></sup>mass in transport, are particle not field properties and hence<sup><span style="FONT-SIZE: x-small"> </span></sup>cannot be described by the fields of CED. It is<sup><span style="FONT-SIZE: x-small"> </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"> </span></sup>''cannot represent mass density in transport'' | ||
[[Category:Scientific Paper|energy momentum electrodynamics]] | [[Category:Scientific Paper|energy momentum electrodynamics]] | ||
[[Category:Electrodynamics|energy momentum electrodynamics]] | [[Category:Electrodynamics|energy momentum electrodynamics]] | ||
Latest revision as of 13:58, 22 July 2026
| Scientific Paper | |
|---|---|
| Title | Energy and Momentum in Electrodynamics |
| Author(s) | D E McLennan |
| Keywords | kinetic energy vs potential energy in classical electrodynamics, lack of support for field momentum |
| Published | 1988 |
| Journal | Physics Essays |
| Volume | 1 |
| Number | 3 |
| Pages | 179-183 |
Abstract
The distinction between kinetic and potential energy has never been made clear in classical electrodynamics (CED). The long-range fields of CED carry potential energy only because of their intimate connection with the force laws. However, kinetic energy and momentum, which represent mass in transport, are particle not field properties and hence cannot be described by the fields of CED. It is therefore clear that the Abraham "momentum density" <img border="0" alt="epsilon" align="bottom" src="http://physicsessays.aip.org/stockgif3/egr.gif" />0E ? B, cannot represent mass density in transport
