$\definecolor{red}{RGB}{255,0,0}$$\definecolor{black}{RGB}{0,0,0}$
  1. $\lambda_0$
  2. $\lambda_0$
  4. $\lambda_0$
    • $$\color{blue}{\rightarrow}\color{black}\;$$$$\lambda_0 = \lambda \cdot n$$
  1. $\lambda$
  2. $\lambda$
  4. $\lambda$
    • $$\color{blue}{\rightarrow}\color{black}\;$$$$\lambda = \frac{\lambda_0}{n} $$
  1. $v$
  2. $v$
  4. $v$
    • $$\color{blue}{\rightarrow}\color{black}\;$$$$v = \frac{c}{n} $$
  1. $n$
  2. $n$
  4. $n$
    • $$\color{blue}{\rightarrow}\color{black}\;$$$$n = \frac{\lambda}{\lambda_0} $$
    • $$\color{blue}{\rightarrow}\color{black}\;$$$$n = \frac{c}{v} $$

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Lumière: Vitesse, fréquence et longueur d'onde dans un milieu réfringent

Numbers in the form 1/2 or 0.5 or 1.5E3 are accepted: