Yerkes Observatory Buildings, Instruments, Equipment, Grounds
| Title | Yerkes Observatory Buildings, Instruments, Equipment, Grounds |
| View | Century of Progress 15:2199 (2008-003) |
| Series | VI: Yerkes Observatory |
| Description | 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. |
| Subject Terms | Elvey, Christian Thomas, 1899-1970 | Struve, Otto, 1897-1963 | Frost, Edwin Brant, 1866-1935 | Refracting telescopes | Arcturus (Star) | Century of Progress International Exposition (1933-1934): Chicago, Illinois) |
| Photographer | Blakslee, George C., 1861-1941 |
| Photograph Date | 1933-03-28 |
| Physical Format | Glass plate negatives; 19.6 x 24.5 cm |
| Location | 373 West Geneva Street | Williams Bay, Wisconsin |
| Campus Grid | Y01 |
| Collection | Archival Photographic Files |
| Repository | University of Chicago Library, Special Collections Research Center |
| Image Identifier | apf6-00477 |
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