Refraction

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General Description

Refraction is the word used to describe a change in the direction light travels in.[1] Light is observed to change direction when it travels through a medium and/or mediums that change the speed of the light. The property of a medium that determines light's speed has a few different names.

NAME
Index of Refraction
Refractive Index
Optical Density
Relative permittivity and permeability

References