Template:Selected anniversaries/July 23: Difference between revisions
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File:Typographer patent 1829.jpg|link=Typographer (typewriter) (nonfiction)|1829: William Austin Burt patents the [[Typographer (typewriter) (nonfiction)|typographer]], a precursor to the typewriter. | |||
File:Vera Rubin.jpg|link=Vera Rubin (nonfiction)|1928: Astronomer and academic [[Vera Rubin (nonfiction)|Vera Rubin]] born. She will discover the discrepancy between the predicted angular motion of galaxies and the observed motion, by studying galactic rotation curves. | File:Vera Rubin.jpg|link=Vera Rubin (nonfiction)|1928: Astronomer and academic [[Vera Rubin (nonfiction)|Vera Rubin]] born. She will discover the discrepancy between the predicted angular motion of galaxies and the observed motion, by studying galactic rotation curves. | ||
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Revision as of 20:51, 16 June 2017
1829: William Austin Burt patents the typographer, a precursor to the typewriter.
1928: Astronomer and academic Vera Rubin born. She will discover the discrepancy between the predicted angular motion of galaxies and the observed motion, by studying galactic rotation curves.