From aa9d3c43b91c52eff984a44de510d7c385b1f277 Mon Sep 17 00:00:00 2001
From: Claude Meny <claude.meny@irap.omp.eu>
Date: Thu, 28 Jan 2021 22:31:34 +0100
Subject: [PATCH] Update cheatsheet.fr.md

---
 .../10.interferences/cheatsheet.fr.md             | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/12.temporary_ins/70.wave-optics/10.interferences/cheatsheet.fr.md b/12.temporary_ins/70.wave-optics/10.interferences/cheatsheet.fr.md
index a6ad5baa2..f7df72785 100644
--- a/12.temporary_ins/70.wave-optics/10.interferences/cheatsheet.fr.md
+++ b/12.temporary_ins/70.wave-optics/10.interferences/cheatsheet.fr.md
@@ -655,21 +655,16 @@ $`=\phi_{géo}`$
 *Calcul de l'amplitude totale*
 
 * **Interférences en réflexion** : rappel, on se limite aux *deux premiers faisceaux*.<br>
-<br>
-$`\underline{A}_{\,tot}=A\cdot r_{12} + A \cdot r_{21} \cdot t_{12} \cdot t_{21} \cdot e^{\displaystyle\,i\,\phi_{géo}}`$<br>
-<br>
-Comme $`r_{21}=-1\cdot r_{12}=e^{\,i\,\pi}\cdot r_{12}`$<br>
-<br>
-$`\underline{A}_{\,tot}=A\cdot r_{12}\cdot`$
+<br>$`\underline{A}_{\,tot}=A\cdot r_{12} + A \cdot r_{21} \cdot t_{12} \cdot t_{21} \cdot e^{\displaystyle\,i\,\phi_{géo}}`$<br>
+<br>Comme $`r_{21}=-1\cdot r_{12}=e^{\,i\,\pi}\cdot r_{12}`$<br>
+<br>$`\underline{A}_{\,tot}=A\cdot r_{12}\cdot`$
 $`\;\left( 1 + e^{\,i\,\pi}\cdot t_{12} \cdot t_{21} \cdot e^{\displaystyle\,i\,(\phi_{géo}+\phi_{ref})}\right)`$
 $`\;=A\cdot r_{12}\cdot \left( 1 + \cdot t_{12} \cdot t_{21} \cdot e^{\displaystyle\,i\,(\phi_{géo}+\pi)}\right)`$
 $`\;=A\cdot r_{12}\cdot \left( 1 + \cdot t_{12} \cdot t_{21} \cdot e^{\displaystyle\,i\,(\phi_{géo}+\phi_{ref})}\right)`$
 <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>
-**$`\underline{A}_{\,tot}=A\cdot r_{12}\cdot \left( 1 +e^{\displaystyle\,i(\phi_{géo}+\phi_{ref})}\right)`$**
+<br>Comme $`T=t_{12}\cdot t_{12}\simeq 1`$, nous faisons l'**approximation $`T=t_{12}=t_{12}=1`$**.<br>
+<br>**$`\underline{A}_{\,tot}=A\cdot r_{12}\cdot \left( 1 +e^{\displaystyle\,i(\phi_{géo}+\phi_{ref})}\right)`$**
 $`=\,A\cdot r_{12}\cdot \left( 1 +e^{\displaystyle\,i \left( \dfrac{\,4\,\pi\,n_2\,e\cdot cos\,\theta_2}{\lambda}+\pi \right)} \right)`$
 
 !!!! *Attention :*