23rd July

Mathematicians who were born or died on 23rd July


Mathematicians born on this day:

1775 : Étienne Louis Malus
1854 : Ivan Śleszyński
1863 : Kelly Miller
1888 : Don Carlson
1914 : William Wager Cooper
1920 : Herbert Federer
1932 : Tom Whiteside
1960 : Juha Heinonen

Mathematicians who died on this day:

1903 : Eduard Weyr
1938 : Ernest Brown
1964 : Samarendra Nath Roy
1964 : Werner Rogosinski
1993 : Florence Nightingale David
2006 : Frederick Mosteller

Posters available   (Click on a link below)

Ernest Brown Étienne Louis Malus Werner Rogosinski


Theorem of the day from Robin Whitty Mathematician of the week

A quotation for today

Étienne Louis Malus (1775 - 1812)

We find that light acquires properties which are relative only to the sides of the ray, -- which are the same for the north and south sides of the ray, (using the points of the compass for description's sake only) and which are different when we go from the north and south to the east or to the west sides of the ray. I shall give the name of poles to these sides of the ray, and shall call polarization the modification which gives to light these properties relative to these poles.



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This page is a copy of the one at:

School of Mathematics and Statistics
University of St Andrews, Scotland
https://www-history.mcs.st-andrews.ac.uk/Day_files/Day723.html