Commit b44ee832 authored by Claude Meny's avatar Claude Meny

Update textbook.fr.md

parent 58c1d9a4
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......@@ -63,4 +63,12 @@ $`\overrightarrow{rot} \, \left( \overrightarrow{rot}\,\overrightarrow{E} \right
La reconstruction de
$`\Delta \;\overrightarrow{E} =\overrightarrow{grad} \left(div\;\overrightarrow{E}\right) - \overrightarrow{rot}\, \left(\overrightarrow{rot}\;\overrightarrow{E}\right)`$
a +, je dois y aller
donne :
$`\Delta \;\overrightarrow{E} = \overrightarrow{grad}\left( \dfrac{\rho}{\epsilon_O} \right) + \mu_0\;\dfrac{\partial \overrightarrow{j}}{\partial t} +
\mu_0 \epsilon_0 \;\dfrac{\partial^2 \overrightarrow{E}}{\partial t^2}`$
ce qui donne par identification au premier terme de l'équation d'onde :
$`\Delta \;\overrightarrow{E}-\mu_0 \epsilon_0 \;\dfrac{\partial^2 \overrightarrow{E}}{\partial t^2} = \overrightarrow{grad}\left( \dfrac{\rho}{\epsilon_O} \right) + \mu_0\;\dfrac{\partial \overrightarrow{j}}{\partial t} +
\mu_0 \epsilon_0 \;\dfrac{\partial^2 \overrightarrow{E}}{\partial t^2}`$
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