Update cheatsheet.en.md

9ed45c28 · Claude Meny · 05994c4b · 9ed45c28
Commit 9ed45c28 authored Sep 08, 2020 by Claude Meny
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cheatsheet.en.md ...ace/02.plane-refracting-surface-overview/cheatsheet.en.md +1 -0

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--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/01.plane-refracting-surface/02.plane-refracting-surface-overview/cheatsheet.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/01.plane-refracting-surface/02.plane-refracting-surface-overview/cheatsheet.en.md
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 title: 'Spherical refracting surface  : overview'
 media_order: dioptre-1.gif
 published: false
+visible: false
 ---

 ### What is a refracting interface ?