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![[Man with insect collection] - Glass negative photogrpah. Public domain.](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MzYvMDEvMDEvbWFuLXdpdGgtaW5zZWN0LWNvbGxlY3Rpb24tMS02NDAuanBn/40/31/webp "[Man with insect collection] - Glass negative photogrpah. Public domain.")
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Precise measurements. Washington, D.C. June 17. W.H. Goss, of the National Bureau of Standards, is shown making very precise measurements of the electrical conductance of standard solutions, which are the basis of industrial control of boiled water, steam condensates, beet sugar refining, metal cleaning baths, and of various other technical operations. 6/17/37
Summary
Public domain photograph, 1910s-1920s portrait, American, free to use, no copyright restrictions image - Picryl description
Tags
Date
1937
Contributors
Harris & Ewing, photographer
Location
Washington, District of Columbia, United States, 38.90719, -77.03687
Source
Library of Congress
Copyright info
No known restrictions on publication.
