alb5481730

Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance ca. 1913-1917

Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance ca. 1913-1917.
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Title:
Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance ca. 1913-1917
Caption:
Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance ca. 1913-1917.
Credit:
Album / HUM Images/Universal Images Group
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Image size:
4497 x 3261 px | 42.0 MB
Print size:
38.1 x 27.6 cm | 15.0 x 10.9 in (300 dpi)