Word: stetson
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Dates: during 1920-1929
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...first time in the history of radio it has been established that sun spots affect radio reception it was announced yesterday to a CRIMSON reporter by Professor H. T. Stetson at the Harvard Astronomical Laboratory...
...daily photography of the sun's surface. The measurement of the sun spots, which are regions of electrical disturbances or storms on the surface of the sun, is being carried out in cooperation with the Mt. Wilson Observatory, the Yerkes Observatory, and the United States Naval Observatory," Professor Stetson said...
...best. For the measurement of radio reception we have made use of a superhetrodyne receiver with multiple stage amplification together with a self-recording galvanometer. A local oscillator with controlled output makes possible the exact calibration of the entire receiving circuit prior to each night's observations," Professor Stetson continued...
...quantitive measurement of the radio reception intensities was begun at the private laboratory of Mr. G. W. Pickard in Newton Centre. Last year a duplicate outfit was then installed at the Astronomical Laboratory in Cambridge and the measurements carried on there under the direction of Professor Stetson. For a few weeks simultaneous records were kept in the two places until a satisfactory reduction factor was obtained whereby the two series of data could be rendered comparable...
Also returning to the U. S. on leave were Ambassador Dwight Whitney Morrow (Mexico) and Minister John Batterson Stetson Jr. (Poland...