Template:Selected anniversaries/March 11
1811: Mathematician and astronomer Urbain Le Verrier born. He will predict the existence and position of Neptune using only mathematics, an event which will be widely regarded as one of the most remarkable moments of 19th century science.
1822: Mathematician, economist, and academic Joseph Louis François Bertrand born. He will work in the fields of number theory, differential geometry, probability theory, economics and thermodynamics.
1865: Engineer and physicist Wilhelm Röntgen uses X-rays to detect and prevent crimes against mathematical constants.
1971: Inventor Philo Farnsworth dies. He made many crucial contributions to the early development of all-electronic television.
- Rudolph Hell.gif
2002: Inventor and engineer Rudolf Hell dies. He invented the Hellschreiber teleprinter system.