Word: amplifyer
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Obtaining a supply of atoms with electrons in the higher energy states is the chief problem in using stimulated emission to amplify.
Bloembergen's maser is used to amplify weak radiations of very short wavelength--for example, microwave radio signals. In use for a year-and-a-half on the Harvard College Observatory's 60-foot radio telescope, the maser has already helped double the known number of radio stars.
Masers amplify by way of a special effect of quantum physics known as "stimulated emission of radiation." (The name "maser" stands for "Microwave Amplification by Stimulated Emission of Radiation."
This leads to what in office language is called the "checking query," which seeks to double-check, to amplify, to clarify. These queries on precise points of fact are sometimes the bane of correspondents' lives, but they help TIME to be complete-and as positive as it can be...
At first thought, and at second thought too, a festival of TV commercials is as appealing as a festival of anthrax germs. Yet last week a ballroom full of people gathered for such a rite at Manhattan's Hotel Roosevelt and sat voluntarily through 100 commercials in a row...