From b588d00c8c4e596e36c89811a3cb1178e6649bb2 Mon Sep 17 00:00:00 2001 From: Claude Meny Date: Sun, 1 Dec 2019 09:32:21 +0100 Subject: [PATCH] Update cheatsheet.en.md --- .../02.concept-ray-of-light-overview/cheatsheet.en.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/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-overview/cheatsheet.en.md b/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-overview/cheatsheet.en.md index c8b9dbb6b..f28a4d256 100644 --- a/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-overview/cheatsheet.en.md +++ b/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-overview/cheatsheet.en.md @@ -30,7 +30,7 @@ Light rays *do not interact with each other* ##### The refraction index **Refractive Index $`n`$**        -**$`n \; = \; \frac{c}{v}`$** +**$`n \; = \; \dfrac{c}{v}`$** * **`c`** : *speed of light in vacuum* (absolute limit) * **`v`** : *speed of light in the middle* homogeneous @@ -53,7 +53,7 @@ I wanted to make this important remark here, but it is not simple: with Doppler !! $`n`$: complex value dependent on the $\nu$ frequency of the electromagnetic wave, strong variations representative of all light / matter interaction mechanisms: $`n (\nu) = \Re[n(\nu )] + \Im[n(\nu)]`$
!! !! In the visible domain (where $`\lambda_0`$ is more used than $`\nu`$) and for transparent medium :
-!! real value, small variations of $`n`$ with $`\lambda_0`$ ($`\frac{\Delta n}{n} <1 \%`$) +!! real value, small variations of $`n`$ with $`\lambda_0`$ $`\left(\frac{\Delta n}{n} < 1\%\right)`$ ##### Optical path