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A laser (from the acronym Light Amplification by Stimulated Emission of Radiation) is an optical source that emits photons in a coherent beam. The back-formed verb to lase means "to produce laser light" or possibly "to apply laser light to".
Laser light is typically near-monochromatic, i.e. consisting of a single wavelength or color, and emitted in a narrow beam. This is in contrast to common light sources, such as the incandescent light bulb, which emit incoherent photons in almost all directions, usually over a wide spectrum of wavelengths.
Laser action is explained by the theories of quantum mechanics and thermodynamics. Many materials have been found to have the required characteristics to form the laser gain medium needed to power a laser, and these have led to the invention of many types of lasers with different characteristics suitable for different applications.
More on [ Laser ]
A laser is being pointed in mine and the girls next door's room from a room in the dorm next to us. It is so scary!
brittylayne (Brittany Boaz) Thu, 05 Nov 2009 06:26:30 -0000
A laser is being pointed in mine and the girls next door's room from a room in the dorm next to us. It is so scary!
Benefits of Laser hair removal | ArticlesBase.com http://tinyurl.com/yhkhj64
chris_ledu (Christine Ledu) Thu, 05 Nov 2009 06:26:14 -0000
Benefits of Laser hair removal | ArticlesBase.com http://tinyurl.com/yhkhj64
Using Google Adwords To Drive Laser Targeted Traffic http://bit.ly/4t9tvf
weightloss4you (Herschel Lawhorn) Thu, 05 Nov 2009 06:26:02 -0000
Using Google Adwords To Drive Laser Targeted Traffic http://bit.ly/4t9tvf
@Paviux A conseguir un laser verde pal sabado!
Orkero (Leonardo A. Merida) Thu, 05 Nov 2009 06:25:41 -0000
@Paviux A conseguir un laser verde pal sabado!
The Successful Laser Dentist v3.n3 http://aweber.com/b/y1L2
LaresResearch (Lares Research) Thu, 05 Nov 2009 06:25:02 -0000
The Successful Laser Dentist v3.n3 http://aweber.com/b/y1L2
Wow, local-dimming led backlit LCD tv's aren't cheap. Neither is the laser one. And I can forget OLED. Decisions, decisions.
benjaminellison (Ben Ellison) Thu, 05 Nov 2009 06:24:14 -0000
Wow, local-dimming led backlit LCD tv's aren't cheap. Neither is the laser one. And I can forget OLED. Decisions, decisions.
Excel Technology, Inc. - Designs, develops, manufactures and markets tunable solid state and multi-wavelength laser products for dental, medical and industrial markets. (Nasdaq: XLTC).
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