Update...

Update 00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/30.beyond/annex.fr.md

00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/30.beyond/annex.fr.md

@@ -362,11 +362,11 @@ Sont proposées les catégories suivantes, mais à débattre, toutes les idées
 ! </summary>
 !
 ! * The optical axis is the straight line that joins the center C of the lens to my eye, 
-! positively oriented in the direction of light propagation light for that observation, 
+! positively oriented in the direction of the light propagation for that observation, 
 ! so from the cathedral to my eye. 
 ! * First spherical refrating surface $`DS1`$ : $`\overline{S_1C_1}=+5\:cm`$, $`n_{ini}=1`$ (air) 
 ! and $`n_{fin}=1.5`$ (glass).<br>
-!  Second spherical refrating surface $`DS2`$ : $`\overline{S_1C_1}=-5\:cm`$, $`n_{ini}=1.5`$ (glass) 
+!  Second spherical refrating surface $`DS2`$ : $`\overline{S_2C_2}=-5\:cm`$, $`n_{ini}=1.5`$ (glass) 
 ! and $`n_{fin}=1`$ (air)<br>
 !  Distance between $`DS1`$ and $`DS2`$ vertices : $`\overline{S_1S_2}=+10\:cm`$<br>
 !  Object cathedral $`AB`$ :  $`\overline{AB}=90\;m`$ and $`\overline{S_1A}=-400\;m`$<br>