Secretary Charles G. Abbot Reading the Pyrheliometer

image for Secretary Charles G. Abbot Reading the Pyrheliometer
Category
Historic Images of the Smithsonian
Summary
In the South Yard behind the Smithsonian Institution Building , the Fifth Secretary (1928-1944) of the Smithsonian Charles G. Abbot is taking a reading from a pyrheliometer. Charles G. Abbot was an astrophysicist and patented the pyrheliometer in 1941. A pyrheliometer is an instrument for measuring the sun's radiant energy that is received on the earth.
Contained within
Smithsonian Institution Archives, Accession 90-105, Box 1, Folder: Abbot, C. G
Contact information
Institutional History Division, Smithsonian Archives, 600 Maryland Avenue, SW, Washington, D.C. 20024-2520, SIHistory@si.edu
Topic
Scientific apparatus and instruments
Instruments
Solar radiation
Solar energy--Research
Astrophysicists
Pyrheliometers
Observatory equipment
Secretaries
Astrophysics
Solar energy
Secretariats
Silver Disk Pyrheliometer
Smithsonian Archives - History Div
Restrictions & Rights
No restrictions
Subject
Abbot, C. G (Charles Greeley) b. 1872
South Yard
Physical description
Number of Images: 1; Color: Black and white; Size: 7.9w x10h; Type of Image: Person Medium: Photographic Print
c. 1940
Standard number
SIA2007-0180