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10-07-2014
Physics

contestada

what is refractive index?

Respuesta :

10-07-2014

The refractive index of a substance is the ratio . . .

(speed of light in vacuum) divided by (speed of light in the substance) .

So the speed of light in a substance is

(299,792,458 meters per sec) divided by (the refractive index of the substance).

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