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File:Sec. Abbot and His Solar Powered Invention.jpg

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English: Group of people gathered for a news broadcast concerning astrophysicists and fifth Secretary of the Smithsonian Institution (1928-1944) Charles Greeley Abbot's solar powered invention. Secretary Abbot is seen here talking with an unidentified person in the South Yard behind the Smithsonian Castle. On September 30, 1936, Smithsonian Secretary and astrophysicist Charles G. Abbot tested a solar radiation steam boiler of his design. The National Broadcasting Company (NBC) filmed the test and by operating an electric generator, a short program was broadcast by solar power.
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Source http://siarchives.si.edu/collections/siris_sic_6839
Author Ruel P. Tolman

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current15:02, 11 April 2012Thumbnail for version as of 15:02, 11 April 2012630 × 588 (49 KB)SarahStierch (talk | contribs)

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