MacTutor
Mathematicians Of The Day
25th May
On this day in 1842, Johann Doppler presented a lecture to the Royal Bohemian Society on the Doppler Effect. It was first experimentally verified in 1845 using a locomotive drawing an open car with several trumpeters.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 2004.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 2004.
Click on Ⓟ for a poster.
Born:
- 1828: Karl Peterson Ⓟ
- 1903: Leifur Ásgeirsson Ⓟ
- 1919: Raymond Smullyan Ⓟ
Died:
- 1555: Gemma Frisius Ⓟ
- 1676: Johann Rahn Ⓟ
- 1807: Nicolas Vilant Ⓟ
- 1946: Percy Daniell Ⓟ
- 1956: Johann Radon Ⓟ
- 1963: Tommaso Boggio Ⓟ
- 1972: José Sebastiao e Silva Ⓟ
Quotation of the day
From Raymond Smullyan
Some people are always critical of vague statements. I tend rather to be critical of precise statements; they are the only ones which can correctly be labeled 'wrong'.
