June 2, 2011

3.18 Refractive Index

Recall and use the relationship between refractive index, angle of incidence and angle of refraction...

Refractive index is The ratio of the velocity of light in a vacuum to its velocity in a specified medium or simply put: how much the light is bent/refracted when it enters a specific medium.

to calculate the refractive index we use the formula:

n is the refractive index (this is purely a number and has no units)
i is the angle of incidence (in degrees °)
r is the angle of refraction (in degrees, 

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