Update textbook.fr.md

12.temporary_ins/96.electromagnetism-in-media/20.reflexion-refraction-at-interfaces/10.boundary-conditions/10.main/textbook.fr.md

@@ -213,7 +213,7 @@ field, this condition can also be written:
 
 ---------------
 
-#### chap2 Reflection and transmission at normal incidence
+#### 3.2 - Reflection and transmission at normal incidence
 
 We suppose that the *xy* plane at *z* = 0 is the boundary between
 medium 1 and medium 2. A plane wave of angular frequency *ω*
@@ -231,14 +231,10 @@ conductor. For the perfect conductor, as *σ* , its penetration depth
 transmission can occur, the wave is totally reflected. The incident
 and reflected waves are:
 
-![](electromag-in-media-reflexion-transmission-fig-33a.jpg)   
-![](electromag-in-media-reflexion-transmission-fig-33b.jpg)     
-$`\overrightarrow{E}`$*~r~* $`\overrightarrow{B}`$*~r~*
-medium 2 perfect conductor
-
 @@@@@@@@ $`\quad (equ. 3.21)`$
 
-![]()   
+![](electromag-in-media-reflexion-transmission-fig-33a.jpg)   
+![](electromag-in-media-reflexion-transmission-fig-33b.jpg)     
 _Figure 3.3: Left: Normal incidence at the boundary between a perfect_
 _dielectric and a perfect conductor. Right the total fields at a few_
 _different times._