From 95a8abacb663589917627d291f4448bc43f27512 Mon Sep 17 00:00:00 2001
From: Claude Meny <claude.meny@irap.omp.eu>
Date: Thu, 19 Mar 2020 18:50:13 +0100
Subject: [PATCH] Update textbook.fr.md

---
 .../02.electromagnetic-waves-vacuum-main/textbook.fr.md       | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetic-waves-vacuum-main/textbook.fr.md b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetic-waves-vacuum-main/textbook.fr.md
index c275ed805..33e5e1817 100644
--- a/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetic-waves-vacuum-main/textbook.fr.md
+++ b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetic-waves-vacuum-main/textbook.fr.md
@@ -220,7 +220,9 @@ Jean & 12,3 & Admis\\
 \overrightarrow{B}(\overrightarrow{r},t)=\overrightarrow{B}(\overrightarrow{u}\cdot\overrightarrow{r}-ct)\\
 \end{eqnarray}-->
 
-$`\left \{
+Onde EM plane progressive :<br>
+$`\Longleftrightarrow 
+\left \{
    \begin{array}{r c l}
       AB  & = & 192 \\
       C   & = & 5\,896 \\