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HOKE. MAJOR, U.S.A.; BUREAU OF STANDARDS
A woman sitting at a desk with a baby. Office of War Information Photograph
Machine performs half a day's manual labor in 5 minutes. Washington, D.C., Dec. 22. H.J. Keegan of the U.S. Bureau of Standards, using the spectrophotometer to determine the different colors in a piece of cloth. It formerly took a man a half a day to make this spectrum analysis but now the machine does it in five minutes. The machine measures the % of light transmitted or reflected at various wave lengths in the visible spectrum
Machine performs half a day's manual labor in 5 minutes. Washington, D.C., Dec. 22. H.J. Keegan of the U.S. Bureau of Standards, using the spectrophotometer to determine the different colors in a piece of cloth. It formerly took a man a half a day to make this spectrum analysis but now the machine does it in five minutes. The machine measures the % of light transmitted or reflected at various wave lengths in the visible spectrum
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HOKE. MAJOR, U.S.A.; BUREAU OF STANDARDS
HOKE. MAJOR, U.S.A.; BUREAU OF STANDARDS
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HOKE. MAJOR, U.S.A.; BUREAU OF STANDARDS
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HOKE. MAJOR, U.S.A.; BUREAU OF STANDARDS
Summary
Picryl description: Public domain image of a bureau, office furniture, desk, chair, free to use, no copyright restrictions.
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Tags
Date
01/01/1919
Contributors
Harris & Ewing, photographer
Source
Library of Congress
Link
Copyright info
No known restrictions on publication.