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Identified!  [Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance]   (LOC) | by The Library of Congress
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Identified! [Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance] (LOC)

Photos displaying on either side of this one in the Prints & Photographs Online Catalog may yield clues—view the neighboring photos: www.loc.gov/pictures/related/?&pk=hec2008003390&s...

 

Harris & Ewing,, photographer.

 

[Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance]

 

[between 1913 and 1917]

 

1 negative : glass ; 5 x 7 in. or smaller

 

Notes:

Title information from Flickr Commons Project, 2015.

Date based on date of negatives in same range.

Gift; Harris & Ewing, Inc. 1955.

 

Format: Glass negatives.

 

Rights Info: No known restrictions on publication.

 

Repository: Library of Congress, Prints and Photographs Division, Washington, D.C. 20540 USA, hdl.loc.gov/loc.pnp/pp.print

 

Part Of: Harris & Ewing Collection (Library of Congress)

 

General information about the Harris & Ewing Collection is available at hdl.loc.gov/loc.pnp/pp.hec

 

Higher resolution image is available (Persistent URL): hdl.loc.gov/loc.pnp/hec.04702

 

Call Number: LC-H261- 4348

  

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Taken sometime in 1913