Template:Selected anniversaries/September 28: Difference between revisions

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||1860: Paul Ulrich Villard born ... chemist and physicist. Pic.
||1860: Paul Ulrich Villard born ... chemist and physicist. Pic.


||1803: Guglielmo Libri Carucci dalla Sommaja dies ... mathematician and academic. Pic.
||1869: Guglielmo Libri Carucci dalla Sommaja dies ... mathematician and academic. Pic.
 
||1873: Julian Lowell Coolidge born ... mathematician, historian and a professor and chairman of the Harvard University Mathematics Department. Pic.


||1889: The first General Conference on Weights and Measures (CGPM) defines the length of a meter as the distance between two lines on a standard bar of an alloy of platinum with ten percent iridium, measured at the melting point of ice.
||1889: The first General Conference on Weights and Measures (CGPM) defines the length of a meter as the distance between two lines on a standard bar of an alloy of platinum with ten percent iridium, measured at the melting point of ice.

Revision as of 07:00, 26 April 2020