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. It is also produced by electric arcs, Cherenkov radiation, and specialized lights, such as mercury-vapor lamps, tanning ...
Electromagnetic spectrum - Wikipedia
WEBOther wavelengths, especially near infrared (longer than 760 nm) and ultraviolet (shorter than 380 nm) are also sometimes referred to as light, especially when the visibility to humans is not relevant.
Ultraviolet radiation | Definition, Examples, Effects, Wavelengths ...
WEBSep 23, 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 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.
Ultraviolet (UV) Radiation - Center for Science Education
WEBRed light has a wavelength near 650 nm, while the wavelength of blue light is around 440 nm. The UV portion of the spectrum has different regions, like the different colors of visible light, that correspond to specific wavelengths of UV radiation.
UV Light - Stanford Solar Center - Stanford University
WEBUV (Ultraviolet) Light refers to the region of the electromagnetic spectrum between visible light and X-rays, with a wavelength falling between 400 and 10 nanometers.
Ultraviolet radiation - World Health Organization (WHO)
WEBJul 29, 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 …
Electromagnetic radiation - UV, Wavelengths, Absorption
WEBSep 13, 2024 · Fortunately, a layer of ozone (O 3) in the stratosphere absorbs the most-damaging ultraviolet rays, which have wavelengths of 2000 and 2900 angstroms (one angstrom [Å] = 10 −10 metre), and attenuates those with …
Electromagnetic Spectrum - Introduction - Imagine the Universe!
WEBNov 14, 2014 · Using nanometers, violet, blue, green, yellow, orange, and red light have wavelengths between 400 and 700 nanometers. (This range is just a tiny part of the entire EM spectrum, so the light our eyes can see is just a …