Yerkes Observatory

Yerkes Observatory

Yerkes Observatory
Observing 2
II: Buildings and Grounds
Edwin B. Frost (left), Christian T. Elvey (center), and Otto Struve (right) examine a General Electric photoelectric relay and a F.P.-54 Pliotron tube that will help activate the lights of the "Century of Progress," thus opening the Chicago world fair of 1933. The process involves the Yerkes Observatory 40-inch refractor telescope which will capture light from the star Arcturus and direct it into a photocell of a photo-electric photometer. The resultant current will be transmitted over phone lines to Chicago.
Elvey, Christian Thomas, 1899-1970 | Struve, Otto, 1897-1963 | Frost, Edwin Brant, 1866-1935 | Arcturus (Star) | Century of Progress International Exposition (1933-1934): Chicago, Illinois) | Astronomers
Blakslee, George C., 1861-1941
Photographic prints; 20.0 x 24.5 cm
373 W. Geneva Street | Williams Bay, Wisconsin
Archival Photographic Files
University of Chicago Library, Special Collections Research Center

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