Template:Selected anniversaries/April 9: Difference between revisions
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||1624 – Henrik Rysensteen, Dutch military engineer (d. 1679) | ||1624 – Henrik Rysensteen, Dutch military engineer (d. 1679) | ||
||Benedetto Castelli ( | ||Benedetto Castelli (d. 9 April 1643), born Antonio Castelli, was an Italian mathematician. pic | ||
||Christian Wolff (d. 9 April 1754) was a German philosopher. Wolff was the most eminent German philosopher between Leibniz and Kant. His main achievement was a complete oeuvre on almost every scholarly subject of his time, displayed and unfolded according to his demonstrative-deductive, mathematical method. Pic. | |||
File:Thomas Seebeck.jpg|link=Thomas Johann Seebeck (nonfiction)|1770: Physicist and academic [[Thomas Johann Seebeck (nonfiction)|Thomas Johann Seebeck]] born. He will discover the thermoelectric effect. | File:Thomas Seebeck.jpg|link=Thomas Johann Seebeck (nonfiction)|1770: Physicist and academic [[Thomas Johann Seebeck (nonfiction)|Thomas Johann Seebeck]] born. He will discover the thermoelectric effect. | ||
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File:Joseph-Louis Lagrange.jpg|link=Joseph-Louis Lagrange (nonfiction)|1805: Mathematician and crime-fighter [[Joseph-Louis Lagrange (nonfiction)|Joseph-Louis Lagrange]] delivers lecture on applications of number theory to the detection and prevention of [[crimes against mathematical constants]]. | File:Joseph-Louis Lagrange.jpg|link=Joseph-Louis Lagrange (nonfiction)|1805: Mathematician and crime-fighter [[Joseph-Louis Lagrange (nonfiction)|Joseph-Louis Lagrange]] delivers lecture on applications of number theory to the detection and prevention of [[crimes against mathematical constants]]. | ||
||Isambard Kingdom Brunel | ||Isambard Kingdom Brunel (b. 9 April 1806), was an English mechanical and civil engineer who is considered "one of the most ingenious and prolific figures in engineering history" | ||
||Edmond Nicolas Laguerre (b. April 9, 1834) was a French mathematician, a member of the Académie française (1885). His main works were in the areas of geometry and complex analysis. He also investigated orthogonal polynomials (see Laguerre polynomials). Laguerre's method is a root-finding algorithm tailored to polynomials. | ||Edmond Nicolas Laguerre (b. April 9, 1834) was a French mathematician, a member of the Académie française (1885). His main works were in the areas of geometry and complex analysis. He also investigated orthogonal polynomials (see Laguerre polynomials). Laguerre's method is a root-finding algorithm tailored to polynomials. | ||
Revision as of 20:47, 1 April 2018
1770: Physicist and academic Thomas Johann Seebeck born. He will discover the thermoelectric effect.
1805: Mathematician and crime-fighter Joseph-Louis Lagrange delivers lecture on applications of number theory to the detection and prevention of crimes against mathematical constants.
1860: On his phonautograph machine, Édouard-Léon Scott de Martinville makes the oldest known recording of an audible human voice. A visual recording of audio data, it will first be played back in 2008.
1864: Engineer and physicist Wilhelm Röntgen uses X-rays generator to expose loaded dice, reveals organized math crime cartel in casinos around the world.
1865: Mathematician and electrical engineer Charles Proteus Steinmetz born. He will foster the development of alternating current, formulating mathematical theories which will advance the expansion of the electric power industry in the United States.
1917: Mathematician and philosopher Georg Cantor publishes new theory of sets derived from Gnomon algorithm functions. Colleagues hail it as "a magisterial contribution to science and art of detecting and preventing crimes against mathematical constants."
1978: Musician and alleged math criminal Skip Digits performs at the Kennedy Center for the Arts.