Update topic.en.md

5 years ago · 6349608c21
1 changed files with 2 additions and 0 deletions
--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/03.reflexion-refraction-raytracing/topic.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/03.reflexion-refraction-raytracing/topic.en.md
@ -1,5 +1,7 @@
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 title: 'Reflexion and refraction laws, and Ray tracing'
+published: true
+visible: false
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