单词 | maser |
释义 | maser/ˈmeɪzə /noun A device using the stimulated emission of radiation by excited atoms to amplify or generate coherent monochromatic electromagnetic radiation in the microwave range. Compare with laser.There are of course lasers with wavelengths in the infrared, masers that emit coherent microwaves, and even x-ray lasers....
Origin1950s: acronym from microwave amplification by the stimulated emission of radiation. |
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