indice de réfractionمعامل الانكسار屈折率Współczynnik załamaniaضریب شکستrefractive indexíndice refrativoIndex lomuIndeks biasaníndice de refracción折射率BrechzahlBrechungsindexअपवर्तनांकkırılma indeksiIndice de refracțieПоказатель преломленияindice di rifrazione
\(n = \frac{c_0}{c}\), where \(c_0\) is the speed of light in vacuum, and \(c\) is the speed of light in the medium.
n4:plainTextDescription
"refractive index" or index of refraction n of a substance (optical medium) is a dimensionless number that describes how light, or any other radiation, propagates through that medium.