kids encyclopedia robot

Image: Identified! (21899747561) (LOC)

Kids Encyclopedia Facts
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Description: Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance
Title: Charles Greeley Abbot
Credit: This image is available from the United States Library of Congress's Prints and Photographs division under the digital ID hec.04702. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
Author: Harris & Ewing, photographer. The Library of Congress
Permission: Harris & Ewing Collection Library of Congress The Library of Congress @ Flickr Commons
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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