Word: slipher
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Dates: during 1930-1939
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...varies with the hours of the day and the seasons of the year, as if Earth periodically gets between the radio receiver and an extra-terrestrial source of the hiss. In this variation the Jansky waves differ from Dr. Millikan's cosmic rays and Dr. Vesto Melvin Slipher's cosmic radiation (TIME. May 1). Directional studies show that the hiss must originate near the point in the Milky Way toward which the Sun is rushing Earth and the other planets. Researcher Jansky left it to the astrophysicists to say what caused his new galactic waves...
...concentration of cosmic radiation as a wedge of zodiacal light at the western horizon. In the autumn the light concentrates at the eastern horizon. One theory of the source of zodiacal light supposes that it is sunlight reflected from small bodies or gas molecules. Astronomer Vesto Melvin Slipher of Lowell Observatory, Flagstaff, has another thought-but he did not elaborate it in his Philadelphia lecture...
...Slipher let the strange, faint light sift through spectroscopes. After 100-hr. exposures he caught blue and violet bands in his spectrographs. Other exposures showed red light in "surprising strength." More recent observations demonstrate that zodiacal light contains the entire spectrum from red to violet. The assumption is that "the strange light originates at some distance above the Earth's surface, in a layer of considerable thickness. The Earth's atmosphere is playing a considerable role in the production of these radiations." The light seems to be a transformation of sunlight (or starlight) rather than a reflection...
...Professor Harold Lee Alden of Yale's South African Station, who sides with Dr. Brown, claims X is too small to influence Uranus; Dr. Frank Schlesinger, Director of Yale Observatory; Dr. Armin Otto Leuschner, astronomy professor at University of California. Chief among X supporters is Dr. Vesto Melvin Slipher, director of Lowell Observatory, whose brother. Astronomer Earl Carl Slipher, last fortnight gave out the following calculations...
...telescopes to the path in the skies where he had said his planet would be moving. The night of last Jan. 21, Clyde W. Tombaugh, 24, an assistant at the observatory, saw a strange blotch of light on a new plate. He hastily took the photograph to Vesto Melvin Slipher, director of the observatory. Dr. Slipher joyfully notified his younger brother, Earl Carl Slipher, and the rest of the staff, including Carl Otto Lampland. They were quite excited. Here visibly was Percival Lowell's proof. Night after night they rephotographed the planet. Pictures showed that it moved slightly...