Ultraviolet - Wikipedia
Ultraviolet radiation, also known as simply UV, 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 …
Ultraviolet Light or UV Radiation - Science Notes and Projects
2023年4月1日 · The primary source of UV light is the Sun, which emits radiation across the entire UV spectrum. However, only UVA and UVB radiation reach the Earth’s surface, as the ozone layer absorbs UVC. Other sources of UV light include artificial sources like black lights, tanning lamps, mercury vapor lamps, high pressure xenon lamps, welding arcs, and ...
ultraviolet radiation - Encyclopedia Britannica
5 天之前 · ultraviolet radiation, that portion of the electromagnetic spectrum extending from the violet, or short-wavelength, end of the visible light range to the X-ray region. . Ultraviolet (UV) radiation is undetectable by the human eye, although, when it falls on certain materials, it may cause them to fluoresce—i.e., emit electromagnetic radiation of lower energy, such as visible
Facts About Ultraviolet Radiation | Radiation and Your Health ...
2024年2月20日 · Ultraviolet (UV) radiation is a form of non-ionizing radiation that is emitted by the sun and artificial sources. The beneficial effects of UV radiation include the production of a vital nutrient, vitamin D. However, overexposure may present risks. Sunburn, premature aging, and skin cancer are all risks to overexposure.
Ultraviolet (UV) Radiation - FDA
UV radiation is the portion of the EM spectrum between X-rays and visible light. More Information on UV Radiation . Q: How is radiation classified on the electromagnetic spectrum?