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M3P2
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d24e4012
Commit
d24e4012
authored
Oct 05, 2022
by
Claude Meny
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Update cheatsheet.fr.md
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cheatsheet.fr.md
...-vacuum/10.maxwell-equations/20.overview/cheatsheet.fr.md
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12.temporary_ins/90.electromagnetism-in-vacuum/10.maxwell-equations/20.overview/cheatsheet.fr.md
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d24e4012
...
@@ -71,17 +71,11 @@ RÉSUMÉ
...
@@ -71,17 +71,11 @@ RÉSUMÉ
*
En tout point de l'espace et à tout instant :
*
En tout point de l'espace et à tout instant :
$
`\left\{\begin{array}{l}
$
`\left\{\begin{array}{l}
div \overrightarrow{E} = \dfrac{\dens}{\epsilon_0}\quad \small{(Maxwell-Gauss)}\\
div \overrightarrow{E} = \dfrac{\dens}{\epsilon_0}\quad \small{(Maxwell-Gauss)}\\
div \overrightarrow{B} = 0\quad \small{(Maxwell-flux)}\\
div \overrightarrow{B} = 0\quad \small{(Maxwell-flux)}\\
\overrightarrow{rot} \;\overrightarrow{E} = -\dfrac{\partial \overrightarrow{B}}{\partial t}\quad\small{(Maxwell-Faraday)}\\
\overrightarrow{rot} \;\overrightarrow{E} = -\dfrac{\partial \overrightarrow{B}}{\partial t}\quad\small{(Maxwell-Faraday)}\\
\overrightarrow{rot} \;\overrightarrow{B} = \mu_0\;\overrightarrow{j} + \mu_0 \epsilon_0 \;\dfrac{\partial \overrightarrow{E}}{\partial t}\quad\small{(Maxwell-Ampère)}
\overrightarrow{rot} \;\overrightarrow{B} = \mu_0\;\overrightarrow{j} + \mu_0 \epsilon_0 \;\dfrac{\partial \overrightarrow{E}}{\partial t}\quad\small{(Maxwell-Ampère)}
\end{array}\right.`
$
\end{array}\right.`
$
$
`\mathbf{div \overrightarrow{E} = \dfrac{\dens}{\epsilon_0}}\quad\tiny{Maxwell-Gauss}}\\
div \overrightarrow{B} = 0\quad Maxwell-flux\\
\mathbf{\overrightarrow{rot} \;\overrightarrow{E} = -\dfrac{\partial \overrightarrow{B}}{\partial t}}\quad\tiny{\text{Maxwell-Faraday}}\\
\mathbf{\overrightarrow{rot} \;\overrightarrow{B} = \mu_0\;\overrightarrow{j} + \mu_0 \epsilon_0 \;\dfrac{\partial \overrightarrow{E}}{\partial t}}\quad\tiny{\text{Maxwell-Ampère}}
\end{array}\right.`
$
<br>
<br>
avec $
`\dens`
$ densité volumique de charge
avec $
`\dens`
$ densité volumique de charge
et $
`\overrightarrow{j}`
$ vecteur densité volumique de courant.
et $
`\overrightarrow{j}`
$ vecteur densité volumique de courant.
...
@@ -99,7 +93,7 @@ div \overrightarrow{B} = 0\quad \small{(Maxwell-flux)}\\
...
@@ -99,7 +93,7 @@ div \overrightarrow{B} = 0\quad \small{(Maxwell-flux)}\\
constante fundamentale de la nature.
constante fundamentale de la nature.
*
$
`\Longrightarrow`
$ le champ EM contient de l'énergie,
*
$
`\Longrightarrow`
$ le champ EM contient de l'énergie,
en densité volumique
$
`\dens_{EM}`
$
:
en densité volumique :
$
`\dens_{EM}=\dfrac{\epsilon_0\,\overrightarrow{E}\cdot\overrightarrow{E}}{2}+\dfrac{\overrightarrow{B}\cdot\overrightarrow{B}}{2 \mu_0}`
$
$
`\dens_{EM}=\dfrac{\epsilon_0\,\overrightarrow{E}\cdot\overrightarrow{E}}{2}+\dfrac{\overrightarrow{B}\cdot\overrightarrow{B}}{2 \mu_0}`
$
*
$
`\Longrightarrow`
$ tout $
`\overrightarrow{dS}`
$ reçoit la puissance EM $
`\mathcal{P}_{EM}`
$ :
*
$
`\Longrightarrow`
$ tout $
`\overrightarrow{dS}`
$ reçoit la puissance EM $
`\mathcal{P}_{EM}`
$ :
...
...
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