Template:Selected anniversaries/August 9: Difference between revisions

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||Dmitry Dmitrievich Morduhai-Boltovskoi (b. August 9, 1876) was a Russian mathematician, best known for his work in analysis, differential Galois theory, number theory, hyperbolic geometry, and history of mathematics. Pic.
||Dmitry Dmitrievich Morduhai-Boltovskoi (b. August 9, 1876) was a Russian mathematician, best known for his work in analysis, differential Galois theory, number theory, hyperbolic geometry, and history of mathematics. Pic.
||Charles Cros or Émile-Hortensius-Charles Cros (d. August 9, 1888) was a French poet and inventor. He was the first person to conceive a method for reproducing recorded sound, an invention he named the Paleophone. Cros was also interested in the fields of transmitting graphics by telegraph and making photographs in color. Pic.


||1892 – Thomas Edison receives a patent for a two-way telegraph.
||1892 – Thomas Edison receives a patent for a two-way telegraph.

Revision as of 20:21, 13 May 2018