Ultraviolet - Wikipedia
WEBUltraviolet (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.
Ultraviolet radiation | Definition, Examples, Effects, Wavelengths ...
WEBAug 6, 2024 · Ultraviolet radiation lies between wavelengths of about 400 nanometres (1 nanometre [nm] is 10 −9 metre) on the visible-light side and about 10 nm on the X-ray side, though some authorities extend the short-wavelength limit to 4 nm.
Radiation: Ultraviolet (UV) radiation - World Health Organization …
WEBMar 9, 2016 · The UV region covers the wavelength range 100-400 nm and is divided into three bands: UVA (315-400 nm) UVB (280-315 nm) UVC (100-280 nm). Short-wavelength UVC is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth's surface.
Ultraviolet Waves - Science@NASA
WEBAug 10, 2016 · NASA's SDO spacecraft captured the image below in multiple wavelengths of extreme ultraviolet (EUV) radiation. The false-color composite reveals different gas temperatures. Reds are relatively cool (about 60,000 Celsius) while blues and greens are hotter (greater than one million Celsius).
Ultraviolet (UV) Radiation - Center for Science Education
WEBUltraviolet radiation lies between visible light and X-rays along the electromagnetic spectrum. UV "light" spans a range of wavelengths between about 10 and 400 nanometers. The wavelength of violet light is around 400 nanometers (or 4,000 Å). Ultraviolet radiation oscillates at rates between about 800 terahertz (THz or …
Ultraviolet Light or UV Radiation - Science Notes and Projects
WEBApr 1, 2023 · Ultraviolet light or UV is electromagnetic radiation in the wavelength range of 10 to 400 nanometers (nm), which is between x-rays and visible light. Because it is largely invisible to humans, another name for UV is black light.
Electromagnetic radiation - UV, Wavelengths, Absorption
WEBSep 13, 2024 · All high-frequency electromagnetic radiation beyond the visible—i.e., ultraviolet light, X-rays, and gamma rays—is ionizing and therefore harmful to body tissues, living cells, and DNA (deoxyribonucleic acid).
Facts About Ultraviolet Radiation | Radiation and Your Health
WEBFeb 20, 2024 · UV radiation is classified into one of three primary groups: ultraviolet A (UVA), ultraviolet B, (UVB) and ultraviolet C (UVC). This grouping is based on the measure of their wavelength, which is measured in nanometers (nm= 0.000000001 meters or 1×10 …
Ultraviolet (UV) Radiation - FDA
WEBLike all forms of light on the EM spectrum, UV radiation is classified by wavelength. Wavelength describes the distance between the peaks in a series of waves.
Ultraviolet radiation - World Health Organization (WHO)
WEBJul 30, 2024 · Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light. UV radiation comes naturally from the sun, but it can also be created by artificial sources used in …