Results for "Smithsonian Astrophysical Observatory. Project Celescope"

1. SI History Chronology

   Abbot Tests Solar Steam Boiler

   • Date: September 30, 1936

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   Patent Drawing for Abbot's Pyrheliometer

   • Date: 1940?
   • Creator: Unknown
   • Creator: Unknown

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   News Broadcast of Secretary Abbot's Solar Invention

   • Date: c. September 30, 1936
   • Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
   • Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954

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