Research scientists in the UK have demonstrated for the first time a solid-state maser that can work at room temperature. Maser is an acronym for Microwave Amplification by Stimulated Emission of Radiation. If that sounds, and reads, suspiciously like the word "laser" that's because masers were developed before lasers, and the two amplify different parts of the electro-magnetic spectrum. The difference is that masers deliver a beam of concentrated microwaves and lasers a beam of concentrated light.
Source: http://ectnews.com.feedsportal.com/c/34520/f/632000/s/2279ddaa/l/0L0Stechnewsworld0N0Crsstory0C759250Bhtml/story01.htm
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