Is the principle used by fiber optics.

Works by total internal reflection.

Includes radio waves, x-rays, and microwaves.

When white light separates into its different colors.

After passing thru one of these all of the light is in one direction.

A tube that can guide light, even around corners.

If this number is bigger, the light refracts more.

A light source that has only one wavelength of light.

If the incoming ray is within this amount, the light will refract thru the surface.

What happens to white light when it passes thru a prism.

Given off when the excited electrons in the atom fall to a lower orbit.

Will not spread out when passed thru a prism.

Light amplification by stimulated emission of radiation.

A number that tells you how slow light moves in a substance.

A single packet or particle of light.

Beyond this light reflects instead of reflects.

Angle at which light refracts at 90º to the surface.

When light becomes trapped inside a substance.

All light, both visible and invisible.

Two of these at right angles can cancel out light.