Elvey, Christian T.

Elvey, Christian T.

Elvey, Christian T.
Informal 3
I: Individuals and Groups
Yerkes Observatory astronomer Christian T. Elvey is pictured examining 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 observatory's 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 | Refracting telescopes | Arcturus (Star) | Century of Progress International Exposition (1933-1934): Chicago, Illinois) | Astronomers
Blakslee, George C., 1861-1941
Photographic prints; 15.8 x 13.7 cm
Williams Bay, Wisconsin
Archival Photographic Files
University of Chicago Library, Special Collections Research Center

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