Color tells you something about how much and what
kind of light is absorbed by a material. By
absorbing more light, objects usually heat up
When light hits a material, there are three
possibilities for what happens to it. The light
can be reflected (bounces back),
absorbed (stays inside), or
transmitted (passes through).
For something that has a color from being
painted, like a car, or dyed, like a t-shirt,
seeing its color means that the object reflects
that color and absorbs all other colors.
(Typically, transmitted light is very small in
these cases.) For example, you see a red shirt as
red because it reflects red light back to your eye
and absorbs all other colors of light.
Two special colors to think about are white
and black. For white, the object is reflecting
all visible colors. For black, the object is
absorbing all visible colors. As a result of this,
black-colored objects tend to heat up faster than
white-colored objects of the same material.
An object with a color will reflect light of that
color, and absorb light by other colors. White
reflects all colors, and black absorbs all colors.
Light is energy, and any light that is absorbed
is converted into heat.
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