Word: maximum
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Dates: during 1920-1929
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...Solar investigations are being undertaken at the Laboratory of Astronomy during the present sunspot maximum and include the 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...
...radio waves. By comparing the graphs of the sun spots and the radio reception we were gratified to discover that, invariably, as the number and intensity of sunspots increased, radio reception grew worse, until, at the peak of the period of sun spot activity, called the Sunspot Maximum, the radio signals reached their weakest point. Likewise, when the spots on the sun were fewest and weakest, the radio reception was 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...
...solar activity exists as exhibited by both spots and radio reception. This is one of the outstanding results of the investigation to date. Each of these sunspot sub-maxima have indicated increasing solar activity and it does not yet appear possible to state that we have reached the real maximum of the sunspot cycle until the sun peak of 1929 is reached and passed. The intensity of that peak will doubtless decide whether or not the maximum of the present sunspot cycle is reached in 1928 or 1929. Contrary to previous announcements it may definitely be asserted that the maximum...
...halls in which rooms may be procured are: Hollis, Houghton, Hol-worthy, Grays, Mathews, Lionel, Thayer, Massachusetts, Strauss and Mower. The maximum number of applicants in one group...
...Ross at Gaithersburg, Maryland, one of the stations of the International Latitude Survey. It was the recent analysis of this series of observations that brought to light the variation of nearly a tenth of a second of arc in latitude, depending upon the altitude of the moon. The maximum value occurs when the moon is 30 degrees above the horizon...