Results 1 - 15 of about 2008 sawaal for "lasers"
There are three types of lasers: solid state, gas and liquid. While all work according to the same general principles, they are differentiated on the basis of the medium they employ to create the laser action.In solid state lasers, an electrical current pumps electrons into the laser medium - typically a semiconductor - exciting electrons that are fixed in the medium. Driven into higher energy
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Computers & Technology by Aryan Gusain at 5:54 PM on July 01, 2008
A type of printer that utilizes a laser beam to produce an image on a drum. The light of the laser alters the electrical charge on the drum wherever it hits. The drum is then rolled through a. Because an entire page is transmitted to a drum before the toner is applied, laser printers are sometimes called page printers. There are two other types of page printers that fall under the category
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Computers & Technology by gauri at 12:24 AM on April 29, 2008
, the foundation technology for laser printers to come.The original laser printer called EARS was developed at the Xerox Palo Alto Research Center beginning in 1969 and completed in November, 1971. Xerox Engineer, Gary Starkweather adapted Xerox copier technology adding a laser beam to it to come up with the laser printer. According to Xerox, "The Xerox 9700 Electronic Printing System, the first xerographic
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Computers & Technology by Rocky at 1:25 AM on May 26, 2008
well;1.Dell Color Laser Printer 1320c:Prise: 299Dells Color Laser Printer 1320c offers surprisingly good color quality for a low acquisition price. Its toner is expensive, however, and its control the transfer belt, which lies belly-up within the opened front cover. Though many color lasers have a similar design, they dont require you to maneuver something so heavy within this space. Dell says
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Computers & Technology by munna at 5:24 AM on June 09, 2008
Laser printing, however, involves a multistep process, and whats happening is not obvious from watching the printer operate. Many end users and even some technicians see it as a mysterious activity. Paper goes in blank; paper comes out printed. But how does it happen?If any of you still remember mimeograph machines, their operation provides a rough analogy to a laser printers. The entire page on a
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Computers & Accessories by natwar lal at 10:17 PM on July 15, 2008
that is able to take an astonishing 1,500 pictures per second. Optical mice are also quite beneficial in that they are easy to maintain and have no moving parts that are prone to failure.The goal of both laser mice and optical mice is to provide a way to transform the motion of your hand into digital signals your computer can use. The main difference between laser mice and optical mice is the type of light
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Computers & Technology by Zaidahmed at 8:01 AM on August 16, 2008
these are the devices which can produce a highly energy beam of monochromatic light by simple amplification process...A laser is an electronic-optical device that emits coherent light radiation. The term "laser" is an acronym for Light Amplification by Stimulated Emission of Radiation. A typical laser emits light in a narrow, low-divergence monochromatic single-coloured, if the laser
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Electronics & Gadgets by ritu.dhawan at 12:25 AM on February 29, 2008
The carbon dioxide laser CO2 laser was one of the earliest gas lasers to be developed invented by Kumar Patel of Bell Labs in 1964, and is still one of the most useful. Carbon dioxide lasers are the highest-power continuous wave lasers that are currently available. They are also quite efficient: the ratio of output power to pump power can be as large as 20.The CO2 laser produces a beam of infrared
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Electronics & Gadgets by ritu.dhawan at 12:33 AM on February 29, 2008
A laser printer is a common type of computer printer that rapidly produces high quality text and graphics on plain paper. Like photocopiers, laser printers employ a xerographic printing process but differ from analog photocopiers in that the image is produced by the direct scanning of a laser beam across the printers photoreceptor....Color laser printers add colored toner typically but not always cyan
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Computers & Technology by nisha at 11:08 PM on November 13, 2007
The term "laser" is an acronym for Light Amplification by Stimulated Emission of Radiation. A typical laser emits light in a narrow, low-divergence monochromatic single-coloured, if the laser is operating in the visible spectrum, beam with a well-defined wavelength. In this way, laser light is in contrast to a light source such as the incandescent light bulb, which emits light over a
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Electronics & Gadgets by neha.walia at 3:41 PM on March 29, 2008
well gurtek u didnt specify teh area ... but as far as my knowledge is concerned laser is not recommended for pimples or acne...well, As with any form of surgery, LASIK does carry with it some risks surgery involve the eye flap, or area of the eye that covers the cornea. This flap is cut during the LASIK procedure so patients cornea can be re-shaped using a laser. The flap is then replaced.At times
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Personal Health by Gurtek at 4:58 AM on September 30, 2008
promoted by Toshiba and NEC.The formats name comes from the fact that a blue laser reads from and writes to the disc rather than the red laser of DVD players. The blue laser has a 405 nanometer nm wavelength that can focus more tightly than the red lasers used for writable DVD. As a consequence, a Blu-ray disc can store much more data in the same 12 centimeter space. Like the rewritable DVD formats, Blu-ray uses
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Computers & Technology by santhosh at 11:34 PM on October 01, 2008
recording, rewriting and playback of high-definition video HD, as well as storing large amounts of data. The name Blu-ray Disc is derived from the blue-violet laser used to read and write this type of disc. Because of its shorter wavelength 405 nm, substantially more data can be stored on a Blu-ray Disc than on the DVD format, which uses a red 650 nm laser. The format offers more than five times the storage
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Computers & Technology by Sanjay at 3:13 PM on April 23, 2008
Q-switching, sometimes known as giant pulse formation, is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses with extremely high gigawatt peak power, much higher than would be produced by the same laser if it were operating in a continuous wave constant output mode. Compared to modelocking, another technique for pulse
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Electronics & Gadgets by ritu.dhawan at 12:31 AM on February 29, 2008
Laser resurfacing is a relatively new treatment for reducing facial wrinkles and skin irregularities, such as blemishes or acne scars. The two types of lasers most commonly used in laser resurfacing are carbon dioxide CO2 and erbium. Each laser vaporizes superficial, damaged skin cells and both reduce the risk for the patient because they limit the amount of heat absorbed by the skin.CO2 Laser Resurfacing
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Beauty & Fashion by upasna YK at 6:12 PM on October 05, 2008
