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What is "laser"

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laser
Longman Dictionary of Contemporary English
laser
noun
COLLOCATIONS FROM OTHER ENTRIES
laser disk
laser pointer
laser printer
laser surgery (=surgery done using a laser)
▪ The doctor suggested laser surgery to improve her sight.
laser treatment (=treatment done with a laser)
▪ Laser treatment can be technically difficult.
COLLOCATIONS FROM CORPUS
■ ADJECTIVE
new
▪ Although the argon laser offered the best available treatment for a time, newer lasers have now superseded it.
▪ If President Reagan wants some shiny new lasers, let him have them.
pulsed
▪ Although the pulsed dye laser is often considered of limited value in mature portwine stain, Tan has recently reported excellent results.
▪ With output parameters within the ideal boundaries, the pulsed dye laser provides far better results, particularly in children.
▪ The pulsed dye laser is used to remove port wine stains which affect three in every 1,000 people.
■ NOUN
beam
▪ Its motion can be detected - for example, by deflecting a laser beam that bounces off a mirror attached to the needle.
▪ Even in a stream of traffic the laser beam can isolate the offending vehicles with an accurate read out of speed and range.
▪ For obvious reasons, laser beams or submerged fluorescent wires can not be used to mark the start line.
▪ Calibration is done insitu using a chopped laser beam to provide a known heat increment.
▪ Stereolithography works by steering laser beams through a photosensitive liquid that solidifies when it is exposed to enough light.
▪ In this technique atoms have their velocities reduced by running head-on into a laser beam tuned to their transition frequency.
▪ The encoding is done by a fine laser beam burning a series of microscopic pits into the disc surface.
doppler
▪ An important question in the interpretation of the laser Doppler readings is the depth of the measurement region.
▪ The three colour laser Doppler Anemometer measures in three dimensions how fast a fluid is travelling past a given point.
dye
▪ Although the pulsed dye laser is often considered of limited value in mature portwine stain, Tan has recently reported excellent results.
▪ With output parameters within the ideal boundaries, the pulsed dye laser provides far better results, particularly in children.
▪ The pulsed dye laser is used to remove port wine stains which affect three in every 1,000 people.
gun
▪ Buff's face was full of hate and he was holding a laser gun.
▪ I hid Buff's laser gun and used some long plants to tie him up.
▪ You're a mercenary and you kill people with laser guns!
▪ I wanted to take a laser gun and kill all those monsters.
▪ Search the maze dodging the robots and auto-firing laser guns.
▪ But I didn't have a laser gun so I couldn't destroy them.
▪ The main improvement is a more powerful laser gun.
▪ A display window on the laser gun provides an instant score-card.
light
▪ The third works by making cancer cells susceptible to laser light which can be used to destroy them.
▪ Using laser cooling, scientists trap the atoms, holding them within carefully tuned beams of laser light.
▪ A stream of laser light, almost invisible in the near-vacuum, played across the creature's head and glistening body.
▪ Highly monochromatic laser light is split by the mirror M to travel along the two arms.
▪ Ruby laser light stitched the interior of the sanctum like thinnest threads of stronger flame within a dully glowing oven.
▪ The neodymium glass laser, nicknamed Vulcan, provides pulses of intense laser light to two target laboratories.
▪ The patient takes a drug which reacts to laser light.
▪ Half a dozen beams of concentrated laser light converged on it, and it burst into fragments.
printer
▪ Graphics handling is also quite impressive, on a par with much more expensive laser printers.
▪ As a result, inkjets were merely an interesting alternative to high-priced laser printers or the older dot-matrix printers.
▪ You can also attach the modem to a laser printer to form a receive-only fax.
▪ Inkjets now can create black-on-white printouts that equal those of expensive laser printers.
▪ This results in a clean, undistorted image which looks like it's come out of a laser printer rather than a fax machine.
▪ C.. Preprinted forms on special paper for laser printers.
▪ Support is provided for many popular printers as well as some laser printers, so quality of output will not be a problem.
▪ The output is obtained on a high-quality laser printer, suitable for copying.
technology
▪ Now it's hoped laser technology will protect customers and keep the fraudsters at bay.
▪ The company makes medical devices that use laser technology for correcting nearsightedness and other eye disorders.
treatment
▪ This represents a cost of £1000 per patient receiving laser treatment.
▪ The screening programme cost £10 per patient screened and £1000 per patient requiring laser treatment.
▪ Response to radiotherapy was assessed and further laser treatment performed if a viable tumour was identified.
▪ As long as the cancers are detected early enough, laser treatment can save lives.
▪ By laser treatment and radiotherapy we aimed to achieve the benefits of both while minimising complications.
▪ A recent pilot study with combined laser treatment and radiotherapy in oesophageal cancer produced promising results.
▪ Advances in keyhole surgery and laser treatment mean much speedier recovery.
▪ The laser treatment she received means she is well on the way to recovery.
■ VERB
develop
▪ Candela develops medical laser systems and is establishing a chain of cosmetic clinics based on the lasers.
use
▪ More expensive systems use laser beams to follow lines.
▪ You can use a laser to cut and you can use it on skin to reduce the wrinkles.
▪ Calibration is done insitu using a chopped laser beam to provide a known heat increment.
▪ In other words, I can precisely measure this surface by looking down at it using laser scanners and such.
▪ Printout method for large, or intarsia, designs using a laser printer or inkjet printer and non-continuous single sheets of paper.
▪ Visudyne therapy is a two-step procedure that uses medicine and lasers to restore vision.
▪ Such cases are currently treated using laser therapy.
▪ They use ink as opposed to the plastic toner used by lasers.
Related phrases:
The Collaborative International Dictionary
laser

laser \laser\ n. [acronym from Light Amplification by Stimulated Emission of Radiation: ca. 1955.] A device which produces an intense, usually narrow, monochromatic beam of coherent light; called also optical maser. It has various forms, and is used in various applications in science and technology. The beam is produced by boosting the majority of the electrons in specific radiation-absorbing atoms in a medium into a higher energy level, from which they are stimulated by their own emitted radiation to drop back synchronously to their lower energy level, and emit light which is in phase (coherent).

Syn: optical maser.

Related phrases:
Douglas Harper's Etymology Dictionary
laser

1960, acronym for "light amplification by stimulated emission of radiation," on pattern of 1955 MASER. A corresponding verb, lase, was coined 1962.

Wiktionary
laser

Etymology 1 n. 1 A device that produces a monochromatic, coherent beam of light. 2 A beam of light produced by such a device; a laser beam. 3 A laser printer. vb. 1 To cut with a #Noun 2 (context sports English) To throw with laser-like precision Etymology 2

alt. 1 A gum resin obtained from certain umbelliferous plants. 2 Such a plant. n. 1 A gum resin obtained from certain umbelliferous plants. 2 Such a plant.

Related phrases:
WordNet
laser

n. an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light [syn: optical maser]

Related phrases:
Wikipedia
Laser

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light coherently. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances ( collimation), enabling applications such as laser pointers. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum, i.e., they can emit a single color of light. Temporal coherence can be used to produce pulses of light as short as a femtosecond.

Among their many applications, lasers are used in optical disk drives, laser printers, and barcode scanners; DNA sequencing instruments, fiber-optic and free-space optical communication; laser surgery and skin treatments; cutting and welding materials; military and law enforcement devices for marking targets and measuring range and speed; and laser lighting displays in entertainment.

Laser (dinghy)

The International Laser Class sailboat, also called Laser Standard and the Laser One is a popular one-design class of small sailing dinghy. According to the Laser Class Rules the boat may be sailed by either one or two people, though it is rarely sailed by two. The design, by Bruce Kirby, emphasizes simplicity and performance. The dinghy is manufactured by independent companies in different parts of the world, including LaserPerformance Europe (Americas and Europe), Performance Sailcraft Australia (Oceania) and Performance Sailcraft Japan.

The Laser is one of the most popular single-handed dinghies in the world. As of 2012, there are more than 200,000 boats worldwide. A commonly cited reason for its popularity is that it is robust and simple to rig and sail in addition to its durability. The Laser also provides very competitive racing due to the very tight class association controls which eliminate differences in hull, sails and equipment.

The term "Laser" is often used to refer to the Laser Standard (the largest of the sail plan rigs available for the Laser hull). However, there are two other sail plan rigs available for the Laser Standard hull and a series of other "Laser"-branded boats which are of completely different hull designs. Examples include the Laser 2 and Laser Pico. The Laser Standard, Laser Radial and Laser 4.7 are three types of 'Laser' administered by the International Laser Class Association.

The laser's hull is made out of GRP, Glass Reinforced Plastics. the deck has a foam layer underneath for strength.

Laser (disambiguation)

A laser is a device which generates a coherent beam of light.

Laser may also refer to:

Laser (debit card)

Laser was a debit card scheme in Ireland. The Laser scheme was maintained and operated by Laser Card Services Ltd., a not-for-profit body owned by four leading financial institutions in Ireland and overseen since 2008 by the Oversight Unit of the Central Bank. The scheme was launched in 1996 and in 2010 there were almost 3 million Laser Cards in circulation. 195 million transactions worth almost €11.2 billion were carried out on those cards in 2009. From 2007, the financial institutions which had issued Laser Cards began to replace them with Visa or MasterCard debit cards. Laser cards were withdrawn from the market on February 28 2014.

Laser (malt liquor)

Laser is a brand of malt liquor manufactured by the Miller Brewing Company and Falstaff Brewing Company. The beverage contains 5.9% alcohol by volume. In 1997, Falstaff won a silver medal at the Great American Beer Festival for Laser Malt Liquor.

Category:American beer brands

Related phrases:

Usage examples of "laser".

MacArthur, the Jevlenese that Shiohin had failed to convince with the laser demonstration, and who was already rising fast in the purple-spiral movement, was a comparative new boy on the scene, having awakened as an ayatollah only in the time since JEVEX was suspended.

The microarray slides are read automatically by laser scanners, and the results, thanks to Bioinformatics, are fed directly into computers armed with appropriate software such that risk and hence cost can be predicted with rapidly advancing speed and accuracy.

Mara, Groce, Esteven, Di and Frencoand Biset, like Hem, holding a laser pistol.

He backhanded the woman and fired again, this time sending a slug along with the laser beam, but Booger Bear had recovered and was moving.

Beams of light shot at the alien from every laser port the comp could bring to bear.

It pioneered the use of semi-conductor-based laser diodes in its high-end copier and printer businesses as well.

As he climbed the dais, Corbal watched him, his gaze like a ruby laser.

Glass may pass a laser beam through, but it tends to diffuse and deregister it, causing it to become more like ordinary light.

The egg-shaped shell was a miniature laser array with a deuterium pellet at the heart of it.

When the lasers fired, their beams heated and compressed the deuterium into a fusion explosion.

On the other side of that wall was the reactor itself, where the energy from the lasers was concentrated on micropellets of deuterium fuel.

Cut off the light that the lasers were pouring into the deuterium fuel pellets and the reactor would shut down.

Netaian fighters trained their targeting lasers on Dickin, then poured energy into his slip-shields.

For a moment longer they stood facing each other-one masked behind the visored helmet, the other faceless except for the muzzle of the laser cannon-before Boba Fett finally gave a slow nod.

Surrounded by the noise and quick glare of laser bolts, he even managed a slight nod of acknowledgment, to show that he had just now realized what Boba Fett had meant when he had told him those few fragments of the deal that had been struck between a bounty hunter and an architect.