Update cheatsheet.en.md

1ac0a0c0 · Claude Meny · 1ea3f3f4 · 1ac0a0c0
Commit 1ac0a0c0 authored Sep 23, 2019 by Claude Meny
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cheatsheet.en.md ...ace/02.plane-refracting-surface-overview/cheatsheet.en.md +1 -1

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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
@@ -24,7 +24,7 @@ with :

 !!!! *BE CAREFUL* :<br>
 !!!! In the same way as we use in English the single word "mirror" to qualify a "reflecting surface", in French is use the single word "dioptre" to qualify a "refracting surface".
-!!!! The term "dioptre" in English is a unit of mesure of the vergence of an optical system. In French, the same unit of mesaure is named "dioptrie".
+!!!! The term "dioptre" in English is a unit of mesure of the vergence of an optical system. In French, the same unit of measure is named "dioptrie".
 !!!! So keep in mind the following scheme :
 !!!!
 !!!! refracting surface : *EN : refracting surface* , *ES : superficie refractiva* , *FR : dioptre*.<br>