Ultraviolet light is a part of the electromagnetic spectrum that humans cannot see. It is composed of shorter wave lengths than visible light and lies beyond the blue end of the visible spectrum. More »

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Ultraviolet light comes from the Sun. Earth's ozone layer absorbs most of the ultraviolet light before it reaches the surface, protecting humans and all other life forms from the harmful effects of these rays. More »

www.reference.com Science Physics Optics & Waves

The wavelength of ultraviolet light is 400 nanometers or less. Visible light and color range from 400 nanometers to 750 nanometers. The region just below the visible wavelength is called near ultraviolet. More »

www.reference.com Science Physics Optics & Waves

Ultraviolet light comes from the Sun. Earth's ozone layer absorbs most of the ultraviolet light before it reaches the surface, protecting humans and all other life forms from the harmful effects of these rays. More »

www.reference.com Science Physics Optics & Waves

Light makes colors fade because ultraviolet radiation is capable of breaking down the molecules of pigments and dyes. The long molecules that make up these colors are often unstable, and the energy that ultraviolet radia... More »

Of the visible light spectrum, violet waves have the most energy. The visible violet light's wavelength measures at 400 nanometers. More »

www.reference.com Science Physics Optics & Waves

White light is composed of all colors of light in the visible spectrum. A prism diffracts all the colors in white light at different angles, separating them. More »