Maser

A maser (/ˈmeɪzər/), an acronym for "microwave amplification by stimulated emission of radiation", is a device that produces coherent electromagnetic waves through amplification by stimulated emission. The first maser was built by Charles H. Townes, James P. Gordon, and H. J. Zeiger at Columbia University in 1953. Townes, Nikolay Basov and Alexander Prokhorov were awarded the 1964 Nobel Prize in Physics for theoretical work leading to the maser. Masers are 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.

Uses material from the Wikipedia article "Maser", which is released under the Creative Commons BY-SA 3.0.
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Astronomical object DistanceWiki
Bug NebulaMaser3381[x]
CD-36 11341Maser3399[x]
Chi CygniMaserS589[x]
HD 136695MaserM1029
KY CygniMaserM5000[x]
NGC 2244Maser4750[x]
S PerseiMaserM...[x]
VY Canis MajorisMaserM1833[x]
YY OrionisMaserK1271
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