from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of several devices that emit highly amplified and coherent radiation of one or more discrete frequencies. One of the most common lasers makes use of atoms in a metastable energy state that, as they decay to a lower energy level, stimulate others to decay, resulting in a cascade of emitted radiation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device that produces a monochromatic, coherent beam of light.
- v. To cut with a laser
- v. To throw with laser-like precision
- n. A gum resin obtained from certain umbelliferous plants.
- n. Such a plant.
from the GNU version of the Collaborative International Dictionary of English
- n. 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).
from The Century Dictionary and Cyclopedia
- n. A gum-resin obtained from the north of Africa, and greatly esteemed by the ancients as an antispasmodic, deobstruent, and diuretic. It is supposed to have been produced by Thapsia Garganica or one of the varieties of that plant. Also called asadulcis.
- n. An obsolete form of leisure.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light
Each ball bearing had his name laser etched on it.
The term laser radar is also in use but is misleading because it uses laser light and not the radiowaves that are the basis of conventional radar
Nov. 9, 1957: Columbia grad student Gordon Gould writes in his notebook calculations for what he calls a laser Light Amplification by Stimulated Emission of Radiation.
On this day in 1957, Gordon Gould began to write down the principles of what he called a laser in his notebook during a sleepless Saturday night.
It was relatively simple fx done using models and drawn in laser bolts, but it was awesome.
But the actual point with a low wattage laser is to prove that you can have a substantial effect on a low flying object.
An alexandrite laser is another red light laser, but it was a bit more efficient.
The next advancement in laser hair removal came in the form of an alexandrite laser.
A laser is a very pure and very specific form of light energy.
My “old” color ink-jet printer delivers a far cleaner and clearer image than does the new and improved laser-jet printer, even if the laser is faster.