Visible light

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Visible portion is that portion of the electromagnetic spectrum which is detectable by the human eye. The sun emits "white" light, which is all visible colors, but which is only a small part of the entire electromagnetic spectrum.

Visible light is energy in the range of approximately 7800 to 3900 Angstroms, where one Angstrom is 0.0000000001 meters. The visible spectrum[1] is most obvious in a rainbow, when the sun's different colors of light are bent (refracted) by the earth's atmosphere during a rainstorm.

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