UV radiation

Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than soft X-rays. It is so named because the spectrum starts with wavelengths slightly shorter than the wavelengths humans identify as the color violet (purple).
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UltraViolet is a 2006 science fiction / action film. It was released in North America on March 3, 2006. The film was written and directed by Kurt Wimmer and produced by Screen Gems. It stars Milla Jovovich as Violet and Cameron Bright as Six. The film was released onto DVD and Blu-ray Disc on June 27, 2006.
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Ultraviolet /ul·tra·vi·o·let/ denoting electromagnetic radiation between violet light and x-rays, having wavelengths of 200 to 400 nanometers. [more]UV radiation - Community and Resources

Ultraviolet radiation. Invisible rays that are part of the energy that comes from the sun. UV radiation also comes from sun lamps and tanning beds. UV radiation can damage the skin and cause melanoma and other types of skin cancer. UV radiation that reaches the Earth's surface is made up of two types of rays, called UVA and UVB rays. UVB rays are more likely than UVA rays to cause sunburn, but UVA rays pass deeper into the skin. Scientists have long thought that UVB radiation can cause melanoma and other types of skin cancer. They now think that UVA radiation also may add to skin damage that can lead to skin cancer and cause premature aging. For this reason, skin specialists recommend that people use sunscreens that reflect, absorb, or scatter both kinds of UV radiation.