Update textbook.fr.md

5 years ago · 42de601878
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+++ b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/01.plane-refracting-surface/01.plane-refracting-surface-main/textbook.fr.md
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 title: 'Le dioptre '
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 ### Vergence d'un système optique.