First Use of the Maser in Radio Astronomy

First Use of the Maser in Radio Astronomy

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Charles H. Townes, the Columbia University physicist who was largely responsible for inventing the maser, took a maser and two graduate students, Leonard Alsop and Joseph Giordmaine, to the Naval Research Laboratory in Washington, D.C. There, working with Cornell Mayer and the 50-foot radio telescope at the NRL, they succeeded in capturing weak radio signals from the radio galaxy, Cygus A. This material represents that work.
Ref: Milton Bracker, “Ruby to Amplify Radio Telescope,” New York Times (March 31, 1958), p. 12.
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first use of the maser in radio astronomy
overall: 12 in x 16 in x 1/16 in; 30.48 cm x 40.64 cm x.15875 cm
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Medicine and Science: Physical Sciences
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National Museum of American History
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