Results for "Astrophysical observatories"
Fred Whipple Receives "Distinguished Federal Civilian Award"
- Date: 1963
- Creator: Unknown
- Creator: Unknown
Aerial View of Smithsonian Institution Building and Natural History Building
- Date: 1932
- Creator: Army Air Corps
- Creator: Army Air Corps
News Broadcast of Secretary Abbot's Solar Invention
- Date: c. September 30, 1936
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
The Periodometer, a New Instrument for Analysing Solar Records
- Date: 1930 Between 1930 and 1934
Expert Mechanician Making Delicate Instruments for Solar Observations
- Date: 1930 Between 1930 and 1934
One of the Instruments Used to Determine Sunlight Intensity and Sky Brightness
- Date: 1930 Between 1930 and 1934
Model of Operation Moonwatch Team
- Date: 1957 January 31, 1957
- Creator: Unknown
Model of Operation Moonwatch Team
- Date: 1957 January 31, 1957
- Creator: Unknown
Model of Operation Moonwatch Team
- Date: 1957 January 31, 1957
- Creator: Unknown
Secretary Abbot with Solar Equipment
- Creator: Unknown
- Creator: Unknown
Dr. Charles G. Abbot with Harmonic Print-out
- Date: 1973
- Creator: Unknown
- Creator: Unknown
Secretary Abbot with Printouts
- Date: c. 1968
- Creator: Unknown
- Creator: Unknown
