Dr. D.C. Bardwell, of the Research Lab. of the U.S. Bureau of Mines, collecting gaseous radium emanation. The radium is in the little safe at the right. Collections are made at intervals of from 4 to 10 days. The gas is drawn off under vacuum and purified by a liquid air refrigeration. The purified
5 x 7 in. or smaller
- Date
- 1924
- Collection
- Harris & Ewing
- Archive
- Library of Congress (via Wikimedia Commons)
- Type
- photograph
- Original size
- 10,212 × 7,416 pixels
Public domainsafest
Reason: Harris & Ewing collection, given to the Library of Congress without copyright restrictions.
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Credit line
"Dr. D.C. Bardwell, of the Research Lab. of the U.S. Bureau of Mines, collecting gaseous radium emanation. The radium is in the little safe at the right. Collections are made at intervals of from 4 to 10 days. The gas is drawn off under vacuum and purified by a liquid air refrigeration. The purified" (1924). Harris & Ewing. Library of Congress, Prints and Photographs Division, via Wikimedia Commons. Public domain. https://commons.wikimedia.org/wiki/File:Dr._D.C._Bardwell,_of_the_Research_Lab._of_the_U.S._Bureau_of_Mines,_collecting_gaseous_radium_emanation._The_radium_is_in_the_little_safe_at_the_right._Collections_are_made_at_intervals_of_LCCN2016887181.jpgNeed photos for a whole script? Add Find Any Photo to Claude and ask for this one by its id: 277807.
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