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Light

Across
Bending of light
Relationship between brightness of light and the distance form the source
Regular reflection in a pattern, such as in a plane mirror
As light enters a transparent medium of higher density (air to glass for ex.) it ?
Angle between incident ray and normal
Color of lowest energy longest wavelength
Down
If the distance to the light source is cut by half the brightness
Decreases by the square of the distance from the source
Image formed at the focus of a concave mirror or convex lens
Spectrum with blanks where no radiation is being emitted