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ultraviolet |
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An invisible band of radiation at the upper end of the visible light spectrum. With wavelengths from 10 to 400 nm, ultraviolet starts at the end of visible light and ends at the beginning of X-rays. The primary source of ultraviolet light is the sun. Although ultraviolet (UV) light is widely known as a disinfectant, it is also used to erase EPROM chips. After several minutes of exposure to UV light, the EPROM can be programmed again.
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| The material combines a transparent liquid-crystal film with a dye that glows blue under ultraviolet illumination. Many powerful electronic flashguns produce sufficient ultraviolet illumination for this process. |
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ultraviolet illumination
