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What is ultraviolet light used for?

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By Claire Gillespie; Updated April 26, 2018 Ultraviolet light, commonly known as UV light, is one type of electromagnetic radiation that comes from the sun and is transmitted at different wavelengths and frequencies. read more

The energy from the ultraviolet light is absorbed by the fluorescent coating inside the fluorescent lamp and re-emitted as visible light." Similar tubes without the same fluorescent coating emit UV light that can be used to disinfect surfaces, since the ionizing effects of UV radiation can kill most bacteria. read more

Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays. UV radiation is present in sunlight constituting about 10% of the total light output of the Sun. read more

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