Mazerlaser

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A maser is a device that produces coherent electromagnetic waves microwaves , through amplification by stimulated emission. The term is an acronym for microwave amplification by stimulated emission of radiation. Townes , James P. Gordon , and Herbert J. Zeiger at Columbia University in Masers are also used as the timekeeping device in atomic clocks , and as extremely low-noise microwave amplifiers in radio telescopes and deep-space spacecraft communication ground stations. Modern masers can be designed to generate electromagnetic waves at not only microwave frequencies but also radio and infrared frequencies.

Mazerlaser

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Categories : American mazerlaser Laser types Microwave technology Optical devices Russian inventions 20th-century inventions.

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Since ancient times, people believed that rays of light carry grand and mysterious powers. Interest in radiation redoubled around the start of the 20th century with the discovery of radio, X-rays and radioactivity. A whole spectrum of radiation opened up, with wavelengths longer or shorter than light. What amazing new uses might be discovered for use in medicine, communications, scientific research — or warfare? Radio was soon put to use, but the same techniques could not be used with radiation of shorter wavelengths. A method for amplifying light had its origins in an idea Einstein developed in Looking deeply into the new theory of quantum physics, he predicted that rays could stimulate atoms to emit more rays of the same wavelength. But engineers had little notion how to manipulate atoms, and for decades the idea seemed a theoretical curiosity of no practical interest.

Mazerlaser

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Tools Tools. Forum statistics Threads , Posts 2,, Members 5,, Latest member mhedxos. TokenFox Webcam. Apr 29, 1, Norman Ramsey and his colleagues first conceived of the maser as a timing standard. Main article: Hydrogen maser. Main article: Astrophysical maser. She's still going, does anyone have anything updated? Contents move to sidebar hide. Reid, ed. Okuma56 New member Getting Addicted Newbie. Townes, [1] to " molecular amplification by stimulated emission of radiation. The whole system noise temperature looking at cold sky 2. Some water masers also emit radiation from a rotational transition at a frequency of 96 GHz. This was ultimately changed to laser , for "light amplification by stimulated emission of radiation".

Maser — quantum generator, emitting coherent electromagnetic waves in the centimeter range microwaves. Maser, principle of operation.

Archived pdf from the original on Latest posts D. The History of the Laser. Download as PDF Printable version. Most of these terms never caught on, however, and all have now become apart from in science fiction obsolete except for maser and laser. Physical Review. Bibcode : PhRv Zeiger at Columbia University in Getting Addicted Newbie. Toggle limited content width. Free Porn Sites.