Commit d74f808e authored by Claude Meny's avatar Claude Meny

Update cheatsheet.fr.md

parent aa9d3c43
Pipeline #4896 canceled with stage
......@@ -661,11 +661,10 @@ $`=\phi_{géo}`$
$`\;\left( 1 + e^{\,i\,\pi}\cdot t_{12} \cdot t_{21} \cdot e^{\displaystyle\,i\,(\phi_{géo}+\phi_{ref})}\right)`$
$`\;=A\cdot r_{12}\cdot \left( 1 + \cdot t_{12} \cdot t_{21} \cdot e^{\displaystyle\,i\,(\phi_{géo}+\pi)}\right)`$
$`\;=A\cdot r_{12}\cdot \left( 1 + \cdot t_{12} \cdot t_{21} \cdot e^{\displaystyle\,i\,(\phi_{géo}+\phi_{ref})}\right)`$
<br>
<br> nous voyons bien qu'*au final* le déphasage des deux ondes est *$`\phi=\phi_{géo}+\phi_{ref}`$*.<br>
<br>Comme $`T=t_{12}\cdot t_{12}\simeq 1`$, nous faisons l'**approximation $`T=t_{12}=t_{12}=1`$**.<br>
<br>Nous voyons bien qu' *au final* le déphasage des deux ondes est *$`\phi=\phi_{géo}+\phi_{ref}`$*.<br>
<br>Comme $`T=t_{12}\cdot t_{12}\simeq 1`$, nous faisons l'**approximation** **$`T=t_{12}=t_{12}=1`$**.<br>
<br>**$`\underline{A}_{\,tot}=A\cdot r_{12}\cdot \left( 1 +e^{\displaystyle\,i(\phi_{géo}+\phi_{ref})}\right)`$**
$`=\,A\cdot r_{12}\cdot \left( 1 +e^{\displaystyle\,i \left( \dfrac{\,4\,\pi\,n_2\,e\cdot cos\,\theta_2}{\lambda}+\pi \right)} \right)`$
$`=\,A\cdot r_{12}\cdot \left( 1 +e^{\displaystyle\,i \left( \dfrac{\,4\,\pi\,n_2\,e\cdot cos\,\theta_2}{\lambda}+\pi\right)}\right)`$
!!!! *Attention :*
!!!!
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