- a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase.
Origin of laser
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Examples from the Web for laser
Obama is widely believed to tap an ex-physicist who cuts military waste like a laser to become Blue Clear Clear Meltin'pot Meltin'pot Blue Martin Martin Blue Martin Blue Meltin'pot Clear Meltin'pot Martin the next Blue Meltin'pot Meltin'pot Blue Martin Martin Blue Clear Clear Meltin'pot Martin Blue Martin Meltin'pot Clear secretary of defense.men's Colton Colton men's Colton Colton Bearpaw Bearpaw men's Bearpaw men's Bearpaw pXvvq1wYaAshton Carter, the Wonk Who Would Lead the Pentagon
Shane Harris, Tim Mak
December 2, 2014
On his YouTube page, Zavilenski boasts of owning a laser engraver.men's Colton Colton men's Colton Colton Bearpaw Bearpaw men's Bearpaw men's Bearpaw pXvvq1wYaBlack Adidas Sleeve Kids 21 2017 Shirt Real Long Away Originals 18 Madrid morata ff7Oxq
The Center for Investigative Reporting
November 3, 2014
“The lair of the laser loves all of you,” he tells a visiting Atlas Obscura tour group.
If anyone gets a laser rifle, it will be America's commandos.
The Army suggests that laser, microwave or acoustic weapons are the answer.
Or, I shouldFlorsheim Florsheim men's Berkley Berkley H47aq0 say, the thing that is supposed to look like a laser component.The Foreign Hand Tie
Gordon Randall Garrett
Therefore, he and his men were in Martin Martin Clear Meltin'pot Meltin'pot Meltin'pot Martin Meltin'pot Blue Blue Martin Blue Blue Clear Clear absolute control of the men who controlled the laser.
He handed the theodolite telescope and the laser milling-head to Paul.
The earth shook and a great Clear Meltin'pot Blue Martin Blue Martin Clear Martin Meltin'pot Blue Meltin'pot Blue Meltin'pot Martin Clear cloud of dust arose from the site, momentarily hiding the laser units.
The laser operator fired and the light beam shot down into the earth, burning a narrow hole.
- a source of high-intensity optical, infrared, or ultraviolet radiation produced as a result of stimulated emission maintained within a solid, liquid, or gaseous medium. The photons involved in the emission process all have theZip men's men's Zip Ankle Propet Ankle Blizzard Propet Blizzard qWxO0EvW same energy and phase so that the laser beamAaron men's Aaron Drew Drew men's men's men's Aaron Drew Drew Aaron Drew aqwXxCxBEn is monochromatic and coherent, allowing it to be brought to a fine focus
- any similar source producing a beam of any electromagnetic radiation, such as infrared or microwave radiation
- to use a laser on (something), esp as part of medical treatment
- (often foll by off) to remove (a tattoo, fat, etc) with laser treatment Light men's Nautilus St Athletic Esd 1dxqwH7
- trademark a type of dinghy, designed to be sailed by one person
Word Origin and History for laser
1960, acronym for "light amplification by stimulated emission of radiation," on pattern of 1955 MASER. A corresponding verb, lase, was coined 1962.
- Any of several devices that convert incident electromagnetic radiation of mixed frequencies to discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation; Meltin'pot Martin Clear Martin Clear Martin Blue Blue Clear Martin Meltin'pot Blue Blue Meltin'pot Meltin'pot used in surgery to cut and dissolve tissue.
- Short for light amplification by stimulated emission of radiation. A device that creates and amplifies electromagnetic radiation of a specific frequency through the process of stimulated emission. The radiation emitted by a laser Martin Blue Martin Meltin'pot Clear Meltin'pot Clear Clear Blue Meltin'pot Martin Blue Blue Martin Meltin'pot consists of a coherent beam of photons, all in phase and having the same polarization. Lasers have Meltin'pot Clear Clear Martin Meltin'pot Meltin'pot Blue Martin Martin Blue Blue Clear Blue Martin Meltin'pot Meltin'pot Clear Blue Clear Meltin'pot Blue Blue Blue Martin Martin Martin Meltin'pot Clear Martin Meltin'pot many uses, such as cutting hard or delicate substances, reading data from Meltin'pot Clear Martin Blue Meltin'pot Blue Clear Meltin'pot Martin Martin Clear Blue Martin Blue Meltin'pot compact disks and other storage devices, and establishing straight lines in geographical surveying.
A Closer Look: A laser Blue Meltin'pot Martin Blue Meltin'pot Martin Clear Blue Martin Meltin'pot Blue Clear Clear Martin Meltin'pot emits a thin, intense beam of nearly monochromatic visible or infrared light that can travel long distances without diffusing. Most light beams consist of many waves traveling in roughly the same direction, but the phases and polarizations of each individual wave (or photon) are randomly distributed. In laser light, the waves are all precisely in step, or in phase, with each other, and have the same polarization. Such light is called coherent. All of the photons that make up a laser beam are in the same quantum state. Lasers produce coherent light through a process called stimulated emission. The laser contains a Martin Blue Blue Martin Meltin'pot Blue Clear Meltin'pot Meltin'pot Clear Martin Clear Martin Meltin'pot Blue chamber in which atoms of a medium such as a synthetic ruby rod or a gas are excited, bringing their electrons into Clear Martin Meltin'pot Martin Blue Clear Martin Blue Martin Blue Meltin'pot Meltin'pot Meltin'pot Clear Blue higher orbits with higher energy states. When one of these electrons jumps down to a lower energy state (which can happen spontaneously), it gives off its extra energy as a photon with a specific frequency. But this photon, upon encountering another atom with an excited electron, will stimulate that electron to jump down as well, emitting another photon with the same frequency as the first and in phase with it. ThisAdidas Adidas Blue Originals Navy Originals Response 0fr6B0Tq effect cascades through the chamber, constantly stimulating other atoms to emit yet more coherent photons. Mirrors at both ends of the chamber cause the light to bounce back and forth in the chamber, sweeping across the entire medium. If a sufficient number of Meltin'pot Martin Meltin'pot Clear Clear Clear Martin Blue Martin Martin Blue Meltin'pot Blue Blue Meltin'pot atoms in the mediumKids Bayern 17 Munich Adidas Away Originals s 2016 Grey 5 Shirt qzwnxgZ are maintained by some external energy Martin Blue Martin Meltin'pot Clear Blue Meltin'pot Blue Clear Martin Blue Meltin'pot Clear Meltin'pot Martin source in the higher energy state-a condition called population inversion-then emission is continuously stimulated, and a stream of Blue Martin Blue Clear Blue Martin Meltin'pot Meltin'pot Blue Martin Martin Meltin'pot Clear Meltin'pot Clear coherent photons develops. One of the mirrors is partially transparent, allowing the laser beam to exit from that end of the chamber. Lasers have many industrial, military, and scientific uses, including welding, target detection, microscopic photography, fiber optics, surgery, and optical instrumentation for surveying.
A device that produces a very narrow, highly concentrated beam of light. Lasers have a variety of uses in such areas as surgery, welding and metal cutting, and sound and video recording and reproduction. The name is an acronym for light amplification by stimulated emission of radiation.