Template:Selected anniversaries/September 14: Difference between revisions
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||1637: Pierre Vernier dies ... was a French mathematician and instrument inventor. He was inventor and eponym of the vernier scale used in measuring devices. Pic: device. | ||1637: Pierre Vernier dies ... was a French mathematician and instrument inventor. He was inventor and eponym of the vernier scale used in measuring devices. Pic: device. | ||
||1698: Charles François de Cisternay du Fay born ... chemist. He discovered the existence of two types of electricity and named them "vitreous" and "resinous" (later known as positive and negative charge respectively). He noted the difference between conductors and insulators, calling them 'electrics' and 'non-electrics' for their ability to produce contact electrification. He also discovered that alike-charged objects would repel each other and that unlike-charged objects attract. Pic. | |||
File:Giovanni_Cassini.jpg|link=Giovanni Domenico Cassini (nonfiction)|1712: Mathematician, astronomer, and engineer [[Giovanni Domenico Cassini (nonfiction)|Giovanni Domenico Cassini]] dies. He discovered four satellites of the planet Saturn and noted the division of the rings of Saturn; the Cassini Division was named after him. | File:Giovanni_Cassini.jpg|link=Giovanni Domenico Cassini (nonfiction)|1712: Mathematician, astronomer, and engineer [[Giovanni Domenico Cassini (nonfiction)|Giovanni Domenico Cassini]] dies. He discovered four satellites of the planet Saturn and noted the division of the rings of Saturn; the Cassini Division was named after him. | ||
Revision as of 17:44, 31 August 2018
1712: Mathematician, astronomer, and engineer Giovanni Domenico Cassini dies. He discovered four satellites of the planet Saturn and noted the division of the rings of Saturn; the Cassini Division was named after him.
1713: Astronomer and mathematician Johann Kies born. He will be one of the first to propagate Isaac Newton's discoveries in Germany, and willl dedicate two of his works to the Englishman.
1894: Mark Twain declines to invest in transdimensional corporation, denounces offer as "a pyramid scheme of Pharaonic proportions."
1916: Physicist, mathematician, and historian Pierre Duhem dies. He wrote: "A theory of physics is not an explanation. It is a system of mathematical propositions, deduced from a small number of principles, which have for their aim to represent as simply, as completely and as exactly as possible, a group of experimental laws."
1916: Time-travelling physician-warrior Asclepius Myrmidon during a chemical warfare attack in western Europe, sets up emergency field hospital.
1960: The Organization of Petroleum Exporting Countries (OPEC) is founded.
2015: Advances in zero-knowledge proof theory "are central to the problem of mathematical reliability," says mathematician and crime-fighter Alice Beta.