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ultraviolet
(redirected from Near ultraviolet)

   Also found in: Medical, Wikipedia 0.01 sec.

ultraviolet

An invisible band of radiation at the upper end of the visible light spectrum. With wavelengths from 10 to 400 nm, ultraviolet starts at the end of visible light and ends at the beginning of X-rays. The primary source of ultraviolet light is the sun. Although ultraviolet (UV) light is widely known as a disinfectant, it is also used to erase EPROM chips. After several minutes of exposure to UV light, the EPROM can be programmed again.

Ultraviolet in the Spectrum
The ultraviolet band comes after visible light and ends at the beginning of X-rays.


ultraviolet
the part of the electromagnetic spectrum with wavelengths shorter than light but longer than X-rays; in the range 0.4 × 10--6 and 1 × 10--8 metres

ultraviolet [¦əl·trə′vī·lət]
(physics)
Pertaining to ultraviolet radiation. Abbreviated UV.


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Recording the emission and absorption of ultraviolet light with wavelengths from 90 to 120 nanometers, FUSE will fill the gap between the Hubble Space Telescope, which detects only the near ultraviolet, and the Extreme Ultraviolet Explorer.
CREE focuses its expertise in SiC and GaN materials on four product areas: light emitting diodes (LEDs), including blue, green and near ultraviolet (UV) LED chips and high-power packaged LEDs; power switching products; radio frequency (RF) and microwave devices, and near UV lasers.
SDK'; TSE: 4004) has launched its proprietary gallium-nitride-based near ultraviolet and green light-emitting diode (LED) chips for use in general white lighting and backlighting of large LCD screens, respectively.
 
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