Template:Selected anniversaries/September 19: Difference between revisions
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||1888 – James Waddell Alexander II, American mathematician and topologist (d. 1971) | ||1888 – James Waddell Alexander II, American mathematician and topologist (d. 1971) | ||
File:James Dewar.jpg|link=James Dewar (nonfiction)|1921: Chemist and physicist [[James Dewar (nonfiction)|James Dewar]] develops liquid gas condensor for use in fighting [[crimes against mathematical constants]]. | |||
||1935 – Konstantin Tsiolkovsky, Russian scientist and engineer (b. 1857) | ||1935 – Konstantin Tsiolkovsky, Russian scientist and engineer (b. 1857) | ||
Revision as of 18:40, 8 July 2017
1921: Chemist and physicist James Dewar develops liquid gas condensor for use in fighting crimes against mathematical constants.
Miniaturized version of John Ambrose Fleming delivers lecture from within Fleming tube.