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M3P2
m3p2-courses
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bbc7c7ac
Commit
bbc7c7ac
authored
Jul 07, 2019
by
Claude Meny
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Update cheatsheet.fr.md
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cheatsheet.fr.md
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01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/01.concept-ray-of-light/02.concept-ray-of-light-F/cheatsheet.fr.md
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@@ -35,9 +35,9 @@ Les rayons lumineux *n'interagissent pas entre eux*
##### L'indice de réfraction <a id="refractive-index"></a>
**Indice de réfraction $n$ **
:
**$
n\;=\;\frac{c}{v}
$**
*
**
c
**
:
* vitesse de la lumière dans le vide *
(limite absolue)
*
**
v
**
:
* vitesse de la lumière dans le milieu *
homogène.
**$
'n\;=\;\frac{c}{v}'
$**
*
**
'c '
**
:
* vitesse de la lumière dans le vide *
(limite absolue)
*
**
'v '
**
:
* vitesse de la lumière dans le milieu *
homogène.
*
grandeur physique
**sans dimension**
et
**toujours >1**
.
Dépendance :
**$n\;=\;n(\nu)\;\;\;$ , ou $\;\;\;n\;=\;n(\lambda)\;\;\;$**
*(avec $\lambda$ longueur d'onde dans le vide)*
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