Refraction: The bending of light through different materials
Opaque: Lets no light through
Translucent: Lets some light through
Transparent: Lets all light through
Incident ray: The beam of light that is arriving in a prism
Angle of incidence: The angular distance of the incident ray from the normal
Normal: A line straight through the middle of the prism
Refracted ray: The beam of light that comes out of a prism
Angle of Refraction: The angular distance of the refracted ray from the normal.
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