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Update textbook.en.md

keep-around/df432163fa83d71a5612b32ff2ae0c212f8ce22d
Claude Meny 6 years ago
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df432163fa
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      01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/03.optical_path/02.optical-path-overview/textbook.en.md

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01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/03.optical_path/02.optical-path-overview/textbook.en.md

@ -42,8 +42,8 @@ de la nature :
**$`\mathrm{d}\delta\;=\;d\dfrac{ds}{c}`$** **$`\mathrm{d}\delta\;=\;d\dfrac{ds}{c}`$**
$`\delta = \disoplaystyle\int_{S_{AB}}n\cdot\mathrm{d}s\;=\;\int_{S_{AB}}\dfrac{c}{v}\cdot\mathrm{d}s`$
$`\hspace{1cm}= c\;\int_{S_{AB}}\dfrac{\mathrm{d}s}{v} =\;c\;\tau`$</strong>
$`\delta=\displaystyle\int_{S_{AB}}n\cdot\mathrm{d}s\;=\;\int_{S_{AB}}\dfrac{c}{v}\cdot\mathrm{d}s`$
$`\hspace{1cm}=c\;\int_{S_{AB}}\dfrac{\mathrm{d}s}{v}=\;c\;\tau`$</strong>
!!! Je peux maintenant considérer un rayon lumineux se propageant d'un point A à un point B, !!! Je peux maintenant considérer un rayon lumineux se propageant d'un point A à un point B,

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