Template:Selected anniversaries/September 20: Difference between revisions
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||1519 – Ferdinand Magellan sets sail from Sanlúcar de Barrameda with about 270 men on his expedition to circumnavigate the globe. | ||1519 – Ferdinand Magellan sets sail from Sanlúcar de Barrameda with about 270 men on his expedition to circumnavigate the globe. | ||
||Pierre François André Méchain (d. 20 September 1804) was a French astronomer and surveyor who, with Charles Messier, was a major contributor to the early study of deep sky objects and comets. | |||
||1819 – Frederick Ellsworth Sickels, American inventor (d. 1895) | ||1819 – Frederick Ellsworth Sickels, American inventor (d. 1895) | ||
Revision as of 20:04, 3 September 2017
1842: Chemist and physicist James Dewar born. He will invent the vacuum flask, which he will use in conjunction with extensive research into the liquefaction of gases.
1954: Mathematicians Alice Beta and Paul Erdős co-publish a new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.
1996: Mathematician and academic Paul Erdős dies. He firmly believed mathematics to be a social activity, living an itinerant lifestyle with the sole purpose of writing mathematical papers with other mathematicians.
1997: Signed first edition of Janet Beta at ENIAC sells for five hundred thousand dollars at charity benefit for victims of crimes against mathematical constants.