Update 2022-03-22 10:53
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-15
@@ -1,7 +1,7 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<!-- 2022-03-15 Tue 08:10 -->
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<!-- 2022-03-22 Tue 10:52 -->
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Pre-Quantum Electrodynamics</title>
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@@ -1632,14 +1632,14 @@ This leads us to define a <b>current density</b> \({\bf J}\) as the vector repre
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charge flowing through a unit area per unit time, with direction along the motion of the charges.
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Then, \(\Delta q = \rho {\bf v} \cdot {\bf n} ~\Delta {\cal S} ~\Delta t\) so we can identify
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</p>
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<div class="eqlabel" id="orgaccd76e">
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<div class="eqlabel" id="org634eed3">
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<p>
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<a id="vcurd"></a><a href="./ems_ms_lf_sc.html#vcurd"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-link" viewBox="0 0 16 16">
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<path d="M6.354 5.5H4a3 3 0 0 0 0 6h3a3 3 0 0 0 2.83-4H9c-.086 0-.17.01-.25.031A2 2 0 0 1 7 10.5H4a2 2 0 1 1 0-4h1.535c.218-.376.495-.714.82-1z"/>
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<path d="M9 5.5a3 3 0 0 0-2.83 4h1.098A2 2 0 0 1 9 6.5h3a2 2 0 1 1 0 4h-1.535a4.02 4.02 0 0 1-.82 1H12a3 3 0 1 0 0-6H9z"/>
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</svg></a>
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</p>
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<div class="alteqlabels" id="org5e4014c">
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<div class="alteqlabels" id="orgec85e6b">
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<ul class="org-ul">
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<li>Gr (5.26)</li>
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<li>PM (4.4)</li>
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@@ -1659,14 +1659,14 @@ Then, \(\Delta q = \rho {\bf v} \cdot {\bf n} ~\Delta {\cal S} ~\Delta t\) so we
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Similarly, a current running down a wire can be described by a linear charge density \(\lambda\)
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moving at velocity \({\bf v}\), giving the current
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</p>
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<div class="eqlabel" id="org613b2d4">
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<div class="eqlabel" id="orgb7eeef6">
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<p>
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<a id="lcurd"></a><a href="./ems_ms_lf_sc.html#lcurd"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-link" viewBox="0 0 16 16">
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<path d="M6.354 5.5H4a3 3 0 0 0 0 6h3a3 3 0 0 0 2.83-4H9c-.086 0-.17.01-.25.031A2 2 0 0 1 7 10.5H4a2 2 0 1 1 0-4h1.535c.218-.376.495-.714.82-1z"/>
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<path d="M9 5.5a3 3 0 0 0-2.83 4h1.098A2 2 0 0 1 9 6.5h3a2 2 0 1 1 0 4h-1.535a4.02 4.02 0 0 1-.82 1H12a3 3 0 1 0 0-6H9z"/>
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</svg></a>
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</p>
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<div class="alteqlabels" id="org5012b81">
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<div class="alteqlabels" id="orgf8d5d1a">
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<ul class="org-ul">
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<li>Gr (5.14)</li>
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</ul>
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@@ -1685,14 +1685,14 @@ moving at velocity \({\bf v}\), giving the current
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For charge flowing on a surface, we can describe the <b>surface current density</b> as a surface charge
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density \(\sigma\) moving at velocity \({\bf v}\),
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</p>
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<div class="eqlabel" id="orga0d42bc">
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<div class="eqlabel" id="org84167b3">
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<p>
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<a id="scurd"></a><a href="./ems_ms_lf_sc.html#scurd"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-link" viewBox="0 0 16 16">
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<path d="M6.354 5.5H4a3 3 0 0 0 0 6h3a3 3 0 0 0 2.83-4H9c-.086 0-.17.01-.25.031A2 2 0 0 1 7 10.5H4a2 2 0 1 1 0-4h1.535c.218-.376.495-.714.82-1z"/>
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<path d="M9 5.5a3 3 0 0 0-2.83 4h1.098A2 2 0 0 1 9 6.5h3a2 2 0 1 1 0 4h-1.535a4.02 4.02 0 0 1-.82 1H12a3 3 0 1 0 0-6H9z"/>
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</svg></a>
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</p>
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<div class="alteqlabels" id="orgcd09447">
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<div class="alteqlabels" id="orgb6d5c96">
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<ul class="org-ul">
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<li>Gr (5.23)</li>
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</ul>
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@@ -1707,18 +1707,18 @@ density \(\sigma\) moving at velocity \({\bf v}\),
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\]
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</p>
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<div class="main div" id="orgf7b1e52">
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<div class="main div" id="org9ca056c">
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<p>
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Magnetic forces on wire, surface and volume carrying current densities:
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</p>
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<div class="eqlabel" id="org9d77d7d">
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<div class="eqlabel" id="org92b3fea">
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<p>
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<a id="Fmagl"></a><a href="./ems_ms_lf_sc.html#Fmagl"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-link" viewBox="0 0 16 16">
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<path d="M6.354 5.5H4a3 3 0 0 0 0 6h3a3 3 0 0 0 2.83-4H9c-.086 0-.17.01-.25.031A2 2 0 0 1 7 10.5H4a2 2 0 1 1 0-4h1.535c.218-.376.495-.714.82-1z"/>
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<path d="M9 5.5a3 3 0 0 0-2.83 4h1.098A2 2 0 0 1 9 6.5h3a2 2 0 1 1 0 4h-1.535a4.02 4.02 0 0 1-.82 1H12a3 3 0 1 0 0-6H9z"/>
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</svg></a>
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</p>
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<div class="alteqlabels" id="org3d85d43">
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<div class="alteqlabels" id="orgad8b186">
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<ul class="org-ul">
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<li>Gr (5.16)</li>
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</ul>
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@@ -1732,14 +1732,14 @@ Magnetic forces on wire, surface and volume carrying current densities:
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\tag{Fmagl}\label{Fmagl}
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\]
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</p>
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<div class="eqlabel" id="orgada65a5">
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<div class="eqlabel" id="org5ab1162">
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<p>
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<a id="Fmags"></a><a href="./ems_ms_lf_sc.html#Fmags"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-link" viewBox="0 0 16 16">
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<path d="M6.354 5.5H4a3 3 0 0 0 0 6h3a3 3 0 0 0 2.83-4H9c-.086 0-.17.01-.25.031A2 2 0 0 1 7 10.5H4a2 2 0 1 1 0-4h1.535c.218-.376.495-.714.82-1z"/>
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<path d="M9 5.5a3 3 0 0 0-2.83 4h1.098A2 2 0 0 1 9 6.5h3a2 2 0 1 1 0 4h-1.535a4.02 4.02 0 0 1-.82 1H12a3 3 0 1 0 0-6H9z"/>
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</svg></a>
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</p>
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<div class="alteqlabels" id="org581bcbc">
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<div class="alteqlabels" id="org5599c69">
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<ul class="org-ul">
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<li>Gr (5.24)</li>
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</ul>
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@@ -1753,14 +1753,14 @@ Magnetic forces on wire, surface and volume carrying current densities:
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\tag{Fmags}\label{Fmags}
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\]
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</p>
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<div class="eqlabel" id="orge1c412b">
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<div class="eqlabel" id="orgde4d414">
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<p>
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<a id="Fmagv"></a><a href="./ems_ms_lf_sc.html#Fmagv"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-link" viewBox="0 0 16 16">
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<path d="M6.354 5.5H4a3 3 0 0 0 0 6h3a3 3 0 0 0 2.83-4H9c-.086 0-.17.01-.25.031A2 2 0 0 1 7 10.5H4a2 2 0 1 1 0-4h1.535c.218-.376.495-.714.82-1z"/>
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<path d="M9 5.5a3 3 0 0 0-2.83 4h1.098A2 2 0 0 1 9 6.5h3a2 2 0 1 1 0 4h-1.535a4.02 4.02 0 0 1-.82 1H12a3 3 0 1 0 0-6H9z"/>
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</svg></a>
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</p>
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<div class="alteqlabels" id="orgf7d34a2">
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<div class="alteqlabels" id="org7f23ff0">
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<ul class="org-ul">
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<li>Gr (5.27)</li>
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</ul>
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@@ -1795,7 +1795,7 @@ target="_blank">Creative Commons Attribution 4.0 International License</a>.
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</div>
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<div id="postamble" class="status">
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<p class="author">Author: Jean-Sébastien Caux</p>
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<p class="date">Created: 2022-03-15 Tue 08:10</p>
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<p class="date">Created: 2022-03-22 Tue 10:52</p>
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<p class="validation"></p>
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</div>
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