uv led!

uv led

Comprehensive Analysis

1) "Uv" -- As to uv led UV Function: abbreviation ultraviolet Pronunciation Symbols For the 3D modelling process, see UV mapping. False-color image of the solar corona as seen in deep ultraviolet light at 17.1 nm by the Extreme ultraviolet Imaging Telescope instrument aboard the SOHO spacecraft Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than soft X-rays. It can be subdivided into near UV (400–200 nm wavelength; abbrev. NUV), far or vacuum UV (200–10 nm; abbrev. FUV or VUV), and extreme or deep UV (1–31 nm; abbrev. EUV or XUV). 1 Origin of term 2 Discovery 3 Explanation 4 Natural sources of UV 4.1 Beneficial effects 5 Safety aspects of UV 5.1 Skin 5.2 Eye 6 Applications of UV 6.1 Black lights 6.2 Fluorescent lamps 6.3 Astronomy 6.4 Pest control 6.5 Spectrophotometry 6.6 Analyzing minerals 6.7 Photolithography 6.8 Checking electrical insulation 6.9 Sterilization 6.10 Disinfecting drinking water 6.11 Food Processing 6.12 Fire detection 6.13 Curing of inks, adhesives and coatings 6.14 Deterring Substance Abuse in Public Places 6.15 Erasing EPROM modules 6.16 Preparing Low Surface Energy Polymers 6.17 Reading completely illegible papyruses 7 See also 8 References The name means "b..." 2) "Led" -- As to uv led 1lead Pronunciation: 'lEd Function: verb Inflected Form(s): led /'led/; lead·ing Etymology: Middle English leden, from Old English l[AE]dan; akin to Old High German leiten to lead, Old English lIthan to go transitive verb 1 a : to guide on a way especially by going in advance b : to direct on a course or in a direction c : to serve as a channel for <a pipe leads water to the house> 2 : to go through : LIVE <lead a quiet life> 3 a (1) : to direct the operations, activity, or performance of <lead an orchestra> (2) : to have charge of <lead a campaign> (3) : to suggest to (a witness) the answer desired by asking leading questions b (1) : to go at the head of <lead a parade> (2) : to be first in or among <lead the league> (3) : to have a margin over <led his opponent> 4 : to bring to some conclusion or condition <led to believe otherwise> 5 : to begin play with <lead trumps> 6 a : to aim in front of (a moving object) <lead a duck> b : to pass a ball or puck just in front of (a moving teammate) intransitive verb 1 a : to guide someone or something along a way b : to lie, run, or open in a specified place or direction <path leads uphill> c : to guide a dance partner through the steps of a dance 2 a : to be first b (1) : BEGIN, OPEN (2) : to play the first card of a trick, round, or game 3 : to tend toward or have a result <study leading to a degree> 4 : to direct the first of a series of blows at an opponent in boxing synonym see GUI Blue, green and red LEDs. A light-emitting diode (LED) is a semiconductor device that emits incoherent narrow-spectrum light when electrically biased in the forward direction. This effect is a form of electroluminescence. LEDs are small extended sources with extra optics added to the chip, which emit a complex intensity spatial distribution [1]. The color of the emitted light depends on the composition and condition of the semiconducting material used, and can be infrared, visible or near-ultraviolet. Rubin Braunstein of the Radio Corporation of America first reported on infrared emission from gallium arsenide (GaAs) and other semiconductor alloys in 1955. Experimenters at Texas Instruments, Bob Biard [2] and Gary Pittman, found in 1961 that gallium arsenide gave off infrared (invisible) light when electric current was applied. Biard and Pittman were able to establish the priority of their work and received the patent for the infrared light-emitting diode. Nick Holonyak Jr. of the General Electric Company developed the first practical visible-spectrum LED in 1962.[3] 1 LED technology 1.1 Physical function 1.2 Ultraviolet, Blue and white LEDs 1.3 Organic light-emitting diodes (OLEDs) 1.4 Operational parameters and efficiency 1.5 Failure modes 2 Considerations in use 2.1 Advantages of using LEDs 2.2 Disadvantages of using LEDs 3 LED applications 3.1 List of LED applications 3.2 Illumination applications 4 History 4.1 Discovery 4.2 LED display panels 4.2.1 Early LED flat panel TV history 4.3 Multi-touch sensing 5 ..." 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