1735 rivejä
43 KiB
HTML
1735 rivejä
43 KiB
HTML
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<div id="content">
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<header>
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<h1 class="title">
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<a href="./index.html" class="homepage-link">Pre-Quantum Electrodynamics</a>
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</h1>
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</header>
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<nav id="collapsed-table-of-contents">
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<details>
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<summary>
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Table of contents
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</summary>
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<ul>
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<li>
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<details>
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<summary>
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<a href="./in.html#in">Introduction</a><span class="headline-id">in</span>
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</summary>
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<ul>
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<li>
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<a href="./in_p.html#in_p">Preface</a><span class="headline-id">in.p</span>
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</li>
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<li>
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<details>
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<summary>
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<a href="./in_t.html#in_t">Tips for the reader</a><span class="headline-id">in.t</span>
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</summary>
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<ul>
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<li>
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<a href="./in_t_c.html#in_t_c">Contextual colors</a><span class="headline-id">in.t.c</span>
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</li>
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</ul>
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</details>
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</li>
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</ul>
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</details>
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</li>
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<li>
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<details>
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<summary>
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<a href="./ems.html#ems">Electromagnetostatics</a><span class="headline-id">ems</span>
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</summary>
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<ul>
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<li>
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<details>
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<summary>
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<a href="./ems_es.html#ems_es">Electrostatics</a><span class="headline-id">ems.es</span>
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</summary>
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<ul>
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<li>
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<details>
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<summary>
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<a href="./ems_es_ec.html#ems_es_ec">Electric Charge</a><span class="headline-id">ems.es.ec</span>
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</summary>
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<ul>
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<li>
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<a href="./ems_es_ec_b.html#ems_es_ec_b">Basics</a><span class="headline-id">ems.es.ec.b</span>
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</li>
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<li>
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<a href="./ems_es_ec_c.html#ems_es_ec_c">Conservation</a><span class="headline-id">ems.es.ec.c</span>
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</li>
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<li>
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<a href="./ems_es_ec_q.html#ems_es_ec_q">Quantization</a><span class="headline-id">ems.es.ec.q</span>
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</li>
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<li>
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<a href="./ems_es_ec_s.html#ems_es_ec_s">Structure</a><span class="headline-id">ems.es.ec.s</span>
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</li>
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</ul>
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</details>
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</li>
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<li>
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<details>
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<summary>
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<a href="./ems_es_efo.html#ems_es_efo">Electric Force and Energy</a><span class="headline-id">ems.es.efo</span>
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</summary>
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<ul>
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<li>
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<a href="./ems_es_efo_cl.html#ems_es_efo_cl">Coulomb's Law</a><span class="headline-id">ems.es.efo.cl</span>
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</li>
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<li>
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<a href="./ems_es_efo_ps.html#ems_es_efo_ps">Principle of Superposition</a><span class="headline-id">ems.es.efo.ps</span>
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</li>
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<li>
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<a href="./ems_es_efo_exp.html#ems_es_efo_exp">Experimental Investigations</a><span class="headline-id">ems.es.efo.exp</span>
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</li>
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<li>
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<a href="./ems_es_efo_e.html#ems_es_efo_e">Energy in Systems of Point Charges</a><span class="headline-id">ems.es.efo.e</span>
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</li>
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</ul>
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||
</details>
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</li>
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<li>
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<details>
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<summary>
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<a href="./ems_es_ef.html#ems_es_ef">Electrostatic Fields</a><span class="headline-id">ems.es.ef</span>
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||
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</summary>
|
||
<ul>
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<li>
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<a href="./ems_es_ef_pc.html#ems_es_ef_pc">Electrostatic Field of Point Charges</a><span class="headline-id">ems.es.ef.pc</span>
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||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_ef_ccd.html#ems_es_ef_ccd">Electrostatic Field of Continuous Charge Distributions</a><span class="headline-id">ems.es.ef.ccd</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_ef_cE.html#ems_es_ef_cE">The Curl of \({\bf E}\)</a><span class="headline-id">ems.es.ef.cE</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_ef_Gl.html#ems_es_ef_Gl">Gauss's Law: the divergence of \({\bf E}\)</a><span class="headline-id">ems.es.ef.Gl</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_es_ep.html#ems_es_ep">The Electrostatic Potential</a><span class="headline-id">ems.es.ep</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_es_ep_d.html#ems_es_ep_d">Definition</a><span class="headline-id">ems.es.ep.d</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_ep_fp.html#ems_es_ep_fp">Field in terms of the potential</a><span class="headline-id">ems.es.ep.fp</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_ep_c.html#ems_es_ep_c">Comments on the Electrostatic Potential</a><span class="headline-id">ems.es.ep.c</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_ep_ex.html#ems_es_ep_ex">Example calculations for the potential</a><span class="headline-id">ems.es.ep.ex</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_ep_PL.html#ems_es_ep_PL">The Poisson Equation and the Laplace Equation</a><span class="headline-id">ems.es.ep.PL</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_ep_bc.html#ems_es_ep_bc">Electrostatic Boundary Conditions</a><span class="headline-id">ems.es.ep.bc</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_es_e.html#ems_es_e">Electrostatic Energy from the Potential</a><span class="headline-id">ems.es.e</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_es_e_pcd.html#ems_es_e_pcd">The Energy of a Point Charge Distribution</a><span class="headline-id">ems.es.e.pcd</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_e_ccd.html#ems_es_e_ccd">The Energy of a Continuous Charge Distribution</a><span class="headline-id">ems.es.e.ccd</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_e_c.html#ems_es_e_c">Comments on Electrostatic Energy</a><span class="headline-id">ems.es.e.c</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_es_c.html#ems_es_c">Conductors</a><span class="headline-id">ems.es.c</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_es_c_p.html#ems_es_c_p">Properties</a><span class="headline-id">ems.es.c.p</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_c_ic.html#ems_es_c_ic">Induced Charges</a><span class="headline-id">ems.es.c.ic</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_c_sc.html#ems_es_c_sc">Surface Charge and the Force on a Conductor</a><span class="headline-id">ems.es.c.sc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_es_c_cap.html#ems_es_c_cap">Capacitors</a><span class="headline-id">ems.es.c.cap</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ca.html#ems_ca">Calculating or Approximating the Electrostatic Potential</a><span class="headline-id">ems.ca</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ca_fe.html#ems_ca_fe">Fundamental Equations for the Electrostatic Potential</a><span class="headline-id">ems.ca.fe</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_ca_fe_L.html#ems_ca_fe_L">The Laplace Equation</a><span class="headline-id">ems.ca.fe.L</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_fe_g.html#ems_ca_fe_g">Green's Identities</a><span class="headline-id">ems.ca.fe.g</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_fe_uP.html#ems_ca_fe_uP">Uniqueness of Solution to Poisson's Equation</a><span class="headline-id">ems.ca.fe.uP</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ca_mi.html#ems_ca_mi">The Method of Images</a><span class="headline-id">ems.ca.mi</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_ca_mi_isc.html#ems_ca_mi_isc">Induced Surface Charges</a><span class="headline-id">ems.ca.mi.isc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_mi_fe.html#ems_ca_mi_fe">Force and Energy</a><span class="headline-id">ems.ca.mi.fe</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_mi_o.html#ems_ca_mi_o">Other Image Problems</a><span class="headline-id">ems.ca.mi.o</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ca_sv.html#ems_ca_sv">Separation of Variables</a><span class="headline-id">ems.ca.sv</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_ca_sv_car.html#ems_ca_sv_car">Cartesian Coordinates</a><span class="headline-id">ems.ca.sv.car</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_sv_cyl.html#ems_ca_sv_cyl">Cylindrical Coordinates</a><span class="headline-id">ems.ca.sv.cyl</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_sv_sph.html#ems_ca_sv_sph">Spherical Coordinates</a><span class="headline-id">ems.ca.sv.sph</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ca_me.html#ems_ca_me">The Multipole Expansion</a><span class="headline-id">ems.ca.me</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_ca_me_a.html#ems_ca_me_a">Approximate Potential at Large Distance</a><span class="headline-id">ems.ca.me.a</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_me_md.html#ems_ca_me_md">Monopole and Dipole Terms</a><span class="headline-id">ems.ca.me.md</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_me_h.html#ems_ca_me_h">Higher Moments</a><span class="headline-id">ems.ca.me.h</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_me_Ed.html#ems_ca_me_Ed">The Electric Field of a Dipole</a><span class="headline-id">ems.ca.me.Ed</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ca_me_Eq.html#ems_ca_me_Eq">The Electric Field of a Quadrupole</a><span class="headline-id">ems.ca.me.Eq</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ms.html#ems_ms">Magnetostatics</a><span class="headline-id">ems.ms</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ms_lf.html#ems_ms_lf">Charges in Motion: the Lorentz Force Law</a><span class="headline-id">ems.ms.lf</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_ms_lf_pc.html#ems_ms_lf_pc">Point Charge</a><span class="headline-id">ems.ms.lf.pc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ms_lf_c.html#ems_ms_lf_c">Currents</a><span class="headline-id">ems.ms.lf.c</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ms_BS.html#ems_ms_BS">Steady Currents: the Biot-Savart Law</a><span class="headline-id">ems.ms.BS</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_ms_BS_sc.html#ems_ms_BS_sc">The Magnetic Field issuing from a Steady Current</a><span class="headline-id">ems.ms.BS.sc</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ms_dcB.html#ems_ms_dcB">Divergence and Curl of \({\bf B}\)</a><span class="headline-id">ems.ms.dcB</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_ms_dcB_sc.html#ems_ms_dcB_sc">Straight-line Currents</a><span class="headline-id">ems.ms.dcB.sc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ms_dcB_BS.html#ems_ms_dcB_BS">Divergence and Curl of \({\bf B}\) from Biot-Savart</a><span class="headline-id">ems.ms.dcB.BS</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./ems_ms_vp.html#ems_ms_vp">The Vector Potential</a><span class="headline-id">ems.ms.vp</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./ems_ms_vp_mbc.html#ems_ms_vp_mbc">Magnetic Boundary Conditions</a><span class="headline-id">ems.ms.vp.mbc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ms_vp_me.html#ems_ms_vp_me">Multipole Expansion of the Vector Potential</a><span class="headline-id">ems.ms.vp.me</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ms_vp_comp.html#ems_ms_vp_comp">Comparison of Electrostatics and Magnetostatics</a><span class="headline-id">ems.ms.vp.comp</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./ems_ms_vp_LC.html#ems_ms_vp_LC">The Levi-Civita Symbol</a><span class="headline-id">ems.ms.vp.LC</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm.html#emsm">Electromagnetostatics in matter</a><span class="headline-id">emsm</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_esm_s.html#emsm_esm_s">A proper definition of "statics"</a><span class="headline-id">emsm.esm.s</span>
|
||
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_esm.html#emsm_esm">Electrostatics in matter</a><span class="headline-id">emsm.esm</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_esm_p.html#emsm_esm_p">Polarization</a><span class="headline-id">emsm.esm.p</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emsm_esm_d.html#emsm_esm_d">Dielectrics</a><span class="headline-id">emsm.esm.d</span>
|
||
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_esm_fpo.html#emsm_esm_fpo">The Field of a Polarized Object</a><span class="headline-id">emsm.esm.fpo</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_esm_fpo_pibc.html#emsm_esm_fpo_pibc">Physical Interpretation of Bound Charges</a><span class="headline-id">emsm.esm.fpo.pibc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emsm_esm_fpo_fid.html#emsm_esm_fpo_fid">The Field Inside a Dielectric</a><span class="headline-id">emsm.esm.fpo.fid</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_esm_D.html#emsm_esm_D">The Electric Displacement</a><span class="headline-id">emsm.esm.D</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_esm_D_bc.html#emsm_esm_D_bc">Boundary Conditions</a><span class="headline-id">emsm.esm.D.bc</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_esm_di.html#emsm_esm_di">Dielectrics</a><span class="headline-id">emsm.esm.di</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_esm_di_ld.html#emsm_esm_di_ld">Linear Dielectrics</a><span class="headline-id">emsm.esm.di.ld</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_msm.html#emsm_msm">Magnetostatics in matter</a><span class="headline-id">emsm.msm</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_msm_m.html#emsm_msm_m">Magnetization</a><span class="headline-id">emsm.msm.m</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_msm_m_dpf.html#emsm_msm_m_dpf">Diamagnetism, Paramagnetism, Ferromagnetism</a><span class="headline-id">emsm.msm.m.dpf</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emsm_msm_m_fdi.html#emsm_msm_m_fdi">Torques and Forces on Magnetic Dipoles</a><span class="headline-id">emsm.msm.m.fdi</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emsm_msm_a.html#emsm_msm_a">Effect of Magnetic Field on Atomic Orbits</a><span class="headline-id">emsm.msm.a</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_msm_fmo.html#emsm_msm_fmo">The Field of a Magnetized Object</a><span class="headline-id">emsm.msm.fmo</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_msm_fmo_bc.html#emsm_msm_fmo_bc">Bound Currents</a><span class="headline-id">emsm.msm.fmo.bc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emsm_msm_fmo_pibc.html#emsm_msm_fmo_pibc">Physical Interpretation of Bound Currents</a><span class="headline-id">emsm.msm.fmo.pibc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emsm_msm_fmo_fim.html#emsm_msm_fmo_fim">The Magnetic Field Inside Matter</a><span class="headline-id">emsm.msm.fmo.fim</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_msm_H.html#emsm_msm_H">The H Field</a><span class="headline-id">emsm.msm.H</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_msm_H_A.html#emsm_msm_H_A">Ampère's Law in Magnetized Materials</a><span class="headline-id">emsm.msm.H.A</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emsm_msm_lnlm.html#emsm_msm_lnlm">Linear and Nonlinear Media</a><span class="headline-id">emsm.msm.lnlm</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emsm_msm_lnlm_sp.html#emsm_msm_lnlm_sp">Magnetic Susceptibility and Permeability</a><span class="headline-id">emsm.msm.lnlm.sp</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emsm_msm_lnlm_fm.html#emsm_msm_lnlm_fm">Ferromagnetism</a><span class="headline-id">emsm.msm.lnlm.fm</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details open="">
|
||
<summary class="toc-open">
|
||
<a href="./emd.html#emd">Electromagnetodynamics</a><span class="headline-id">emd</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emd_Fl.html#emd_Fl">Induction: Faraday's Law</a><span class="headline-id">emd.Fl</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emd_Fl_Fl.html#emd_Fl_Fl">Faraday's Law</a><span class="headline-id">emd.Fl.Fl</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_Fl_ief.html#emd_Fl_ief">The Induced Electric Field</a><span class="headline-id">emd.Fl.ief</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_Fl_i.html#emd_Fl_i">Inductance</a><span class="headline-id">emd.Fl.i</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_Fl_e.html#emd_Fl_e">Energy in Magnetic Fields</a><span class="headline-id">emd.Fl.e</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emd_Me.html#emd_Me">Maxwell's Equations</a><span class="headline-id">emd.Me</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emd_Me_ebM.html#emd_Me_ebM">Electrodynamics Before Maxwell</a><span class="headline-id">emd.Me.ebM</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_Me_dc.html#emd_Me_dc">Maxwell's Correction to Ampère's Law; the Displacement Current</a><span class="headline-id">emd.Me.dc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_Me_Me.html#emd_Me_Me">Maxwell's Equations</a><span class="headline-id">emd.Me.Me</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_Me_mc.html#emd_Me_mc">Magnetic Charge</a><span class="headline-id">emd.Me.mc</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details open="">
|
||
<summary class="toc-open">
|
||
<a href="./emd_ce.html#emd_ce">Charge and Energy Flows</a><span class="headline-id">emd.ce</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emd_ce_ce.html#emd_ce_ce">The Continuity Equation</a><span class="headline-id">emd.ce.ce</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_ce_poy.html#emd_ce_poy">Poynting's Theorem; the Poynting Vector</a><span class="headline-id">emd.ce.poy</span>
|
||
|
||
</li>
|
||
<li class="toc-currentpage">
|
||
<a href="./emd_ce_mst.html#emd_ce_mst">Maxwell's Stress Tensor</a><span class="headline-id">emd.ce.mst</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_ce_mom.html#emd_ce_mom">Momentum</a><span class="headline-id">emd.ce.mom</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_ce_amom.html#emd_ce_amom">Angular Momentum</a><span class="headline-id">emd.ce.amom</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emd_emw.html#emd_emw">Electromagnetic waves in vacuum</a><span class="headline-id">emd.emw</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emd_emw_we.html#emd_emw_we">The Wave Equation</a><span class="headline-id">emd.emw.we</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_emw_mpw.html#emd_emw_mpw">Monochromatic Plane Waves</a><span class="headline-id">emd.emw.mpw</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emd_emw_ep.html#emd_emw_ep">Energy and Momentum</a><span class="headline-id">emd.emw.ep</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emdm.html#emdm">Electromagnetodynamics in Matter</a><span class="headline-id">emdm</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emdm_Me.html#emdm_Me">Maxwell's Equations in Matter</a><span class="headline-id">emdm.Me</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emdm_Me_Mem.html#emdm_Me_Mem">Maxwell's Equations in Matter</a><span class="headline-id">emdm.Me.Mem</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emdm_Me_bc.html#emdm_Me_bc">Boundary Conditions</a><span class="headline-id">emdm.Me.bc</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emdm_emwm.html#emdm_emwm">Electromagnetic Waves in Matter</a><span class="headline-id">emdm.emwm</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emdm_emwm_plm.html#emdm_emwm_plm">Propagation in Linear Media</a><span class="headline-id">emdm.emwm.plm</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emdm_emwm_refr.html#emdm_emwm_refr">Refraction</a><span class="headline-id">emdm.emwm.refr</span>
|
||
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emdm_emwm_refl.html#emdm_emwm_refl">Reflection and Transmission</a><span class="headline-id">emdm.emwm.refl</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emdm_emwm_refl_ni.html#emdm_emwm_refl_ni">Normal Incidence</a><span class="headline-id">emdm.emwm.refl.ni</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emdm_emwm_refl_oi.html#emdm_emwm_refl_oi">Oblique Incidence</a><span class="headline-id">emdm.emwm.refl.oi</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emdm_emwm_refl_Fe.html#emdm_emwm_refl_Fe">Fresnel's Equations</a><span class="headline-id">emdm.emwm.refl.Fe</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emdm_emwm_refl_Ba.html#emdm_emwm_refl_Ba">Brewster's Angle</a><span class="headline-id">emdm.emwm.refl.Ba</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emdm_emwm_ad.html#emdm_emwm_ad">Absorption and Dispersion</a><span class="headline-id">emdm.emwm.ad</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emdm_emwm_ad_c.html#emdm_emwm_ad_c">EM Waves in Conductors</a><span class="headline-id">emdm.emwm.ad.c</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emdm_emwm_wg.html#emdm_emwm_wg">Waveguides</a><span class="headline-id">emdm.emwm.wg</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emdm_emwm_wg_gw.html#emdm_emwm_wg_gw">Guided waves</a><span class="headline-id">emdm.emwm.wg.gw</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emdm_emwm_wg_r.html#emdm_emwm_wg_r">Rectangular Waveguides</a><span class="headline-id">emdm.emwm.wg.r</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emdm_emwm_wg_c.html#emdm_emwm_wg_c">Coaxial Lines</a><span class="headline-id">emdm.emwm.wg.c</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emf.html#emf">Electromagnetic Fields</a><span class="headline-id">emf</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emf_svp.html#emf_svp">Scalar and Vector Potentials</a><span class="headline-id">emf.svp</span>
|
||
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./emf_g.html#emf_g">Gauge Freedom and Choices</a><span class="headline-id">emf.g</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./emf_g_Cg.html#emf_g_Cg">Coulomb Gauge</a><span class="headline-id">emf.g.Cg</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./emf_g_Lg.html#emf_g_Lg">Lorenz Gauge; d'Alembertian; Inhomogeneous Maxwell Equations</a><span class="headline-id">emf.g.Lg</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./red.html#red">Relativistic Electrodynamics</a><span class="headline-id">red</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./red_sr.html#red_sr">Special Relativity</a><span class="headline-id">red.sr</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./red_sr_p.html#red_sr_p">Postulates and their consequences</a><span class="headline-id">red.sr.p</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./red_sr_Lt.html#red_sr_Lt">Lorentz Transformations</a><span class="headline-id">red.sr.Lt</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./red_sr_4v.html#red_sr_4v">Covariant and Contravariant Four-Vectors</a><span class="headline-id">red.sr.4v</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./red_rm.html#red_rm">Relativistic Mechanics</a><span class="headline-id">red.rm</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./red_rm_pt.html#red_rm_pt">Proper Time and Proper Velocity</a><span class="headline-id">red.rm.pt</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./red_rm_rme.html#red_rm_rme">Relativistic Momentum and Energy</a><span class="headline-id">red.rm.rme</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./red_rm_Mf.html#red_rm_Mf">Relativistic version of Newton's Laws; the Minkowski Force</a><span class="headline-id">red.rm.Mf</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./red_rem.html#red_rem">Relativistic Electromagnetism</a><span class="headline-id">red.rem</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./red_rem_mre.html#red_rem_mre">Magnetism as a Relativistic Effect</a><span class="headline-id">red.rem.mre</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./red_rem_Ltf.html#red_rem_Ltf">Lorentz Transformation of Electromagnetic Fields</a><span class="headline-id">red.rem.Ltf</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./red_rem_Fmunu.html#red_rem_Fmunu">The Field Tensor</a><span class="headline-id">red.rem.Fmunu</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./red_rem_Me.html#red_rem_Me">Maxwell's Equations in Relativistic Notation</a><span class="headline-id">red.rem.Me</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./qed.html#qed">Quantum Electrodynamics</a><span class="headline-id">qed</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./qed_t.html#qed_t">QED today</a><span class="headline-id">qed.t</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./d.html#d">Diagnostics</a><span class="headline-id">d</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./d_m.html#d_m">Diagnostics: Mathematical Preliminaries</a><span class="headline-id">d.m</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_ems.html#d_ems">Diagnostics: Electromagnetostatics</a><span class="headline-id">d.ems</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_ems_ca.html#d_ems_ca">Diagnostics: Calculating or Approximating the Electostatic Potential</a><span class="headline-id">d.ems.ca</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_emsm.html#d_emsm">Diagnostics: Electromagnetostatics in Matter</a><span class="headline-id">d.emsm</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_ems_ms.html#d_ems_ms">Diagnostics: Magnetostatics</a><span class="headline-id">d.ems.ms</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_emsm_msm.html#d_emsm_msm">Diagnostics: Magnetostatics in Matter</a><span class="headline-id">d.emsm.msm</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_emd.html#d_emd">Diagnostics: Electromagnetodynamics</a><span class="headline-id">d.emd</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_emd_ce.html#d_emd_ce">Diagnostics: Conservation Laws</a><span class="headline-id">d.emd.ce</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_emd_emw.html#d_emd_emw">Diagnostics: Electromagnetic Waves</a><span class="headline-id">d.emd.emw</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_emf.html#d_emf">Diagnostics: Potentials, Gauges and Fields</a><span class="headline-id">d.emf</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./d_red.html#d_red">Diagnostics: Relativistic Electrodynamics</a><span class="headline-id">d.red</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./a.html#a">Appendices</a><span class="headline-id">a</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./a_l.html#a_l">Literature</a><span class="headline-id">a.l</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c.html#c">Compendium</a><span class="headline-id">c</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c_m.html#c_m">Mathematics</a><span class="headline-id">c.m</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c_m_va.html#c_m_va">Vector Analysis</a><span class="headline-id">c.m.va</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./c_m_va_n.html#c_m_va_n">Notation and algebraic properties</a><span class="headline-id">c.m.va.n</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_va_sp.html#c_m_va_sp">Scalar product</a><span class="headline-id">c.m.va.sp</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_va_cp.html#c_m_va_cp">Cross product</a><span class="headline-id">c.m.va.cp</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_va_tp.html#c_m_va_tp">Triple Products</a><span class="headline-id">c.m.va.tp</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_va_pds.html#c_m_va_pds">Position, Displacement and Separation Vectors</a><span class="headline-id">c.m.va.pds</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c_m_dc.html#c_m_dc">Differential Calculus</a><span class="headline-id">c.m.dc</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./c_m_dc_g.html#c_m_dc_g">Gradient</a><span class="headline-id">c.m.dc.g</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_dc_del.html#c_m_dc_del">The \({\boldsymbol \nabla}\) Operator</a><span class="headline-id">c.m.dc.del</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_dc_div.html#c_m_dc_div">The Divergence</a><span class="headline-id">c.m.dc.div</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_dc_curl.html#c_m_dc_curl">The Curl</a><span class="headline-id">c.m.dc.curl</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_dc_pr.html#c_m_dc_pr">Product Rules</a><span class="headline-id">c.m.dc.pr</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_dc_d2.html#c_m_dc_d2">Second Derivatives</a><span class="headline-id">c.m.dc.d2</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c_m_ic.html#c_m_ic">Integral Calculus</a><span class="headline-id">c.m.ic</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./c_m_ic_lsv.html#c_m_ic_lsv">Line, Surface and Volume Integrals</a><span class="headline-id">c.m.ic.lsv</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_ic_ftc.html#c_m_ic_ftc">The Fundamental Theorem of Calculus</a><span class="headline-id">c.m.ic.ftc</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_ic_ftg.html#c_m_ic_ftg">The Fundamental Theorem for Gradients</a><span class="headline-id">c.m.ic.ftg</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_ic_gauss.html#c_m_ic_gauss">Gauss' Theorem</a><span class="headline-id">c.m.ic.gauss</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_ic_stokes.html#c_m_ic_stokes">Stokes' Theorem</a><span class="headline-id">c.m.ic.stokes</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_ic_ip.html#c_m_ic_ip">Integration by Parts</a><span class="headline-id">c.m.ic.ip</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c_m_cs.html#c_m_cs">Coordinate Systems</a><span class="headline-id">c.m.cs</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./c_m_cs_sph.html#c_m_cs_sph">Spherical Coordinates</a><span class="headline-id">c.m.cs.sph</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_cs_cyl.html#c_m_cs_cyl">Cylindrical Coordinates</a><span class="headline-id">c.m.cs.cyl</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_cs_hyp.html#c_m_cs_hyp">Hyperbolic Coordinates</a><span class="headline-id">c.m.cs.hyp</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c_m_dd.html#c_m_dd">Dirac delta Distribution</a><span class="headline-id">c.m.dd</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./c_m_dd_div.html#c_m_dd_div">The Divergence of \(\hat{\bf r}/r^2\)</a><span class="headline-id">c.m.dd.div</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_dd_1d.html#c_m_dd_1d">The One-Dimensional Dirac Delta Function</a><span class="headline-id">c.m.dd.1d</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_dd_3d.html#c_m_dd_3d">The Three-Dimensional Delta Function</a><span class="headline-id">c.m.dd.3d</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c_m_vf.html#c_m_vf">Vector Fields</a><span class="headline-id">c.m.vf</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./c_m_vf_helm.html#c_m_vf_helm">The Helmholtz Theorem</a><span class="headline-id">c.m.vf.helm</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_vf_pot.html#c_m_vf_pot">Potentials</a><span class="headline-id">c.m.vf.pot</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
<li>
|
||
|
||
<details>
|
||
<summary>
|
||
<a href="./c_m_uf.html#c_m_uf">Useful Formulas</a><span class="headline-id">c.m.uf</span>
|
||
|
||
|
||
</summary>
|
||
<ul>
|
||
<li>
|
||
<a href="./c_m_uf_cyl.html#c_m_uf_cyl">Cylindrical coordinates</a><span class="headline-id">c.m.uf.cyl</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_uf_sph.html#c_m_uf_sph">Spherical coordinates</a><span class="headline-id">c.m.uf.sph</span>
|
||
|
||
</li>
|
||
<li>
|
||
<a href="./c_m_uf_vi.html#c_m_uf_vi">Vector identities</a><span class="headline-id">c.m.uf.vi</span>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</li>
|
||
|
||
</ul>
|
||
</details>
|
||
</nav>
|
||
<ul class="navigation-links"><li>Prev: <a href="emd_ce_poy.html">Poynting's Theorem; the Poynting Vector <small>[emd.ce.poy]</small></a></li><li>Next: <a href="emd_ce_mom.html">Momentum <small>[emd.ce.mom]</small></a></li><li>Up: <a href="emd_ce.html">Charge and Energy Flows <small>[emd.ce]</small></a></li></ul><div id="outline-container-emd_ce_mst" class="outline-4">
|
||
<h4 id="emd_ce_mst">Maxwell's Stress Tensor<a class="headline-permalink" href="./emd_ce_mst.html#emd_ce_mst"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-link" viewBox="0 0 16 16">
|
||
<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"/>
|
||
<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"/>
|
||
</svg></a><span class="headline-id">emd.ce.mst</span></h4>
|
||
<div class="outline-text-4" id="text-emd_ce_mst">
|
||
<p>
|
||
Total EM force on charges in volume \({\cal V}\):
|
||
\[
|
||
{\boldsymbol F} = \int_{\cal V} \left( {\boldsymbol E} + {\boldsymbol v} \times {\boldsymbol B} \right) \rho ~d\tau = \int_{\cal V} \left( \rho {\boldsymbol E} + {\boldsymbol J} \times {\boldsymbol B} \right) d\tau
|
||
\]
|
||
Force per unit volume:
|
||
\[
|
||
{\boldsymbol f} \equiv \rho {\boldsymbol E} + {\boldsymbol J} \times {\boldsymbol B}.
|
||
\]
|
||
Substitute for \(\rho\) and \({\boldsymbol J}\) using Maxwell (Gauss and Ampère-Maxwell):
|
||
\[
|
||
{\boldsymbol f} = \varepsilon_0 ({\boldsymbol \nabla} \cdot {\boldsymbol E}) {\boldsymbol E} + \left( \frac{1}{\mu_0} {\boldsymbol \nabla} \times {\boldsymbol B} - \varepsilon_0 \frac{ \partial {\boldsymbol E}}{\partial t} \right) \times {\boldsymbol B}.
|
||
\]
|
||
</p>
|
||
|
||
<p>
|
||
On the other hand we have
|
||
\[
|
||
\frac{\partial }{\partial t} \left( {\boldsymbol E} × {\boldsymbol B} \right)
|
||
= \frac{∂ {\boldsymbol E}}{∂ t} × {\boldsymbol B}
|
||
</p>
|
||
<ul class="org-ul">
|
||
<li>{\boldsymbol E} × \frac{∂ {\boldsymbol B}}{∂ t}.</li>
|
||
</ul>
|
||
<p>
|
||
\]
|
||
Using Faraday to substitute for \(\frac{\partial {\boldsymbol B}}{\partial t}\),
|
||
\[
|
||
\frac{ ∂ {\boldsymbol E}}{∂ t} × {\boldsymbol B}
|
||
= \frac{\partial }{\partial t} \left( {\boldsymbol E} × {\boldsymbol B}\right)
|
||
</p>
|
||
<ul class="org-ul">
|
||
<li>{\boldsymbol E} × \left({\boldsymbol ∇} × {\boldsymbol E} \right)</li>
|
||
</ul>
|
||
<p>
|
||
\]
|
||
so
|
||
\[
|
||
{\boldsymbol f} = \varepsilon_0 \left( \left( {\boldsymbol \nabla} \cdot {\boldsymbol E} \right) {\boldsymbol E} - {\boldsymbol E} \times \left( {\boldsymbol \nabla} \times {\boldsymbol E} \right) \right) - \frac{1}{\mu_0} \left( {\boldsymbol B} \times \left( {\boldsymbol \nabla} \times {\boldsymbol B} \right) \right) - \varepsilon_0 \frac{\partial}{\partial t} \left( {\boldsymbol E} \times {\boldsymbol B} \right).
|
||
\]
|
||
Since \({\boldsymbol \nabla} \cdot {\boldsymbol B} = 0\), we can symmetrize the expression in \({\boldsymbol E}\) and \({\boldsymbol B}\). Moreover, by product rule 4,
|
||
\[
|
||
\frac{1}{2}{\boldsymbol \nabla} \left( E^2 \right) = \left( {\boldsymbol E} \cdot {\boldsymbol \nabla} \right) {\boldsymbol E} + {\boldsymbol E} \times \left( {\boldsymbol \nabla} \times {\boldsymbol E} \right)
|
||
\]
|
||
so
|
||
\[
|
||
{\boldsymbol E} \times \left( {\boldsymbol \nabla} \times {\boldsymbol E} \right) = \frac{1}{2} {\boldsymbol \nabla} E^2 - \left({\boldsymbol E} \cdot {\boldsymbol \nabla} \right) {\boldsymbol E}
|
||
\]
|
||
and similarly for \({\boldsymbol B}\). We thus get
|
||
</p>
|
||
\begin{align}
|
||
{\boldsymbol f} =& \varepsilon_0 \left( \left( {\boldsymbol \nabla} \cdot {\boldsymbol E} \right) {\boldsymbol E} + \left( {\boldsymbol E} \cdot {\boldsymbol \nabla} \right) {\boldsymbol E} \right) + \frac{1}{\mu_0} \left( \left( {\boldsymbol \nabla} \cdot {\boldsymbol B} \right) {\boldsymbol B} + \left( {\boldsymbol B} \cdot {\boldsymbol \nabla} \right) {\boldsymbol B} \right) \\
|
||
&- \frac{1}{2} {\boldsymbol \nabla} \left( \varepsilon_0 E^2 + \frac{1}{\mu_0} B^2 \right) - \varepsilon_0 \frac{\partial}{\partial t} \left( {\boldsymbol E} \times {\boldsymbol B} \right).
|
||
\end{align}
|
||
<p>
|
||
This expression can be greatly simplified by introducing the
|
||
</p>
|
||
<div class="main div" id="org9016172">
|
||
<p>
|
||
{\bf Maxwell stress tensor}
|
||
\[
|
||
T_{ij} ≡ ε_0 \left( E_i E_j - \frac{1}{2} δ_{ij} E^2\right)
|
||
</p>
|
||
<ul class="org-ul">
|
||
<li>\frac{1}{\mu_0} \left( B_i B_j - \frac{1}{2} δ_{ij} B^2 \right)</li>
|
||
</ul>
|
||
<p>
|
||
\]
|
||
</p>
|
||
|
||
</div>
|
||
<p>
|
||
The element \(T_{ij}\) represents the force per unit area in the $i$th direction acting on a surface element oriented in the $j$th direction. Diagonal elements are pressures, off-diagonal elements are shears.
|
||
</p>
|
||
|
||
|
||
|
||
<p>
|
||
We then obtain
|
||
</p>
|
||
<div class="main div" id="org39d7962">
|
||
<p>
|
||
{\bf EM force per unit volume}
|
||
\[
|
||
{\boldsymbol f} = {\boldsymbol \nabla} \cdot {\boldsymbol T} - \varepsilon_0 \mu_0 \frac{\partial {\boldsymbol S}}{\partial t}
|
||
\]
|
||
</p>
|
||
|
||
</div>
|
||
<p>
|
||
where \({\boldsymbol S}\) is the Poynting vector. Integrating, we obtain the
|
||
</p>
|
||
<div class="main div" id="org384fd10">
|
||
<p>
|
||
{\bf Total force on charges in volume}
|
||
\[
|
||
{\boldsymbol F} = \oint_S {\boldsymbol T} \cdot d{\boldsymbol a} - \varepsilon_0 \mu_0 \frac{d}{dt} \int_{\cal V} {\boldsymbol S} d\tau.
|
||
\]
|
||
</p>
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<hr><div id="postamble" class="status">
|
||
<p class="author">Author: Jean-Sébastien Caux</p>
|
||
<p class="date">Created: 2022-02-08 Tue 06:55</p>
|
||
<p class="validation"><a href="https://validator.w3.org/check?uri=referer">Validate</a></p>
|
||
</div>
|
||
|
||
|
||
</div>
|
||
</html> |