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PG-132006 · Action · 1h 28mUltraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun.
Apr 3, 2024 · Learn about ultraviolet radiation, the portion of the electromagnetic spectrum between visible light and X-rays. Find out how it affects the human body, the environment, and various applications.
- The Editors of Encyclopaedia Britannica
- What is ultraviolet radiation?Ultraviolet radiation is the portion of the electromagnetic spectrum extending from the violet, or short-wavelength, end of the visible light range...
- How is ultraviolet radiation produced?Ultraviolet radiation is produced by high-temperature surfaces, such as the Sun’s, in a continuous spectrum and by atomic excitation in a gaseous d...
- Can humans see ultraviolet radiation?No, ultraviolet radiation is undetectable by the human eye. Many insects, however, are able to see ultraviolet radiation.
- What is ultraviolet radiation used for?Ultraviolet radiation is useful as both a research tool and a sterilizing technique. It can also be used in fluorescent lamps, which are a more ene...
- Can ultraviolet radiation cause cancer?The three basic skin cancers, basal- and squamous-cell carcinoma and melanoma, have been linked to long-term exposure to ultraviolet radiation and...
Mar 9, 2016 · Learn about the types, sources, effects and protection of UV radiation from the World Health Organization. Find out how ozone depletion, season, time, altitude, clouds and reflection affect your UV exposure and risk of skin cancer.
Aug 10, 2016 · Learn about ultraviolet (UV) light, its sources, effects, and applications in astronomy and Earth science. See images and videos of UV waves from the Sun, stars, galaxies, and aurorae.
- 4 min
Learn about the different regions and effects of UV light, a type of electromagnetic radiation with shorter wavelengths than visible light. Find out how Earth's atmosphere shields us from the most harmful UV radiation and how UV-A, UV-B, and UV-C affect our health and environment.
Learn about ultraviolet radiation, a portion of the electromagnetic spectrum between visible light and X-rays. Find out how it affects humans, the Earth's ozone layer, and various applications.
Aug 24, 2023 · Summary. UV radiation comes primarily from the sun and is made up of UVA, UVB, and UVC rays. UVC rays do not reach Earth, but both UVA and UVB rays pose health risks. While UVB rays are the ...
