Secretary Charles G. Abbot Reading the Pyrheliometer

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Object Details

Subject

Abbot, C. G (Charles Greeley) b. 1872

South Yard

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

Date

c. 1940

Standard number

SIA2007-0180

Restrictions & Rights

No restrictions

Physical description

Number of Images: 1; Color: Black and white; Size: 7.9w x10h; Type of Image: Person Medium: Photographic Print

Data Source

Smithsonian Archives - History Div

Topic

Scientific apparatus and instruments

Instruments

Solar radiation

Solar energy--Research

Astrophysicists

Pyrheliometers

Observatory equipment

Secretaries

Astrophysics

Solar energy

Secretariats

Silver Disk Pyrheliometer

Metadata Usage

Usage conditions apply

Record ID

siris_sic_11877