Update topic.en.md

5 years ago · e6e42342d7
1 changed files with 2 additions and 0 deletions
--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/topic.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/topic.en.md
@ -1,4 +1,6 @@
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 title: 'Paraxial modeling of simple optical elements'
+published: true
+visible: false
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