gbrumfiel writes “Before there were lasers, there were masers: systems that amplified microwaves instead of light. Solid state masers are used in a variety of applications, including deep space communication, but they’ve never been as popular as lasers, in part because they have to be cooled to near absolute zero in order to work. Now a team of British physicists have built a room-temperature maser using some spare chemicals and a laser they bought off of eBay. The new device is 100 million times as powerful as existing masers and might revolutionize telecommunications.”
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