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Hilbert's tenth problem is the tenth on the list of mathematical problems that the German mathematician David Hilbert posed in 1900. It is the challenge to provide a general algorithm which, for any given Diophantine equation (a polynomial equation with integer coefficients and a finite number of unknowns) can decide whether the equation has a ...
Marie Curie (1867–1934), pioneering research into radioactivity. Women inventors have been historically rare in some geographic regions. For example, in the UK, only 33 of 4090 patents (less than 1%) issued between 1617 and 1816 named a female inventor. [1]
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
As a result, the United States has been the birthplace of 161 of Encyclopædia Britannica ' s 321 Greatest Inventions, including items such as the airplane, internet, microchip, laser, cellphone, refrigerator, email, microwave, personal computer, liquid-crystal display and light-emitting diode technology, air conditioning, assembly line ...
7 August 1930 Lawrence Beitier: Marion, Indiana, United States [s 2] See article Larmes: 1930 Man Ray Paris, France The photograph is an extreme close-up of a woman's upturned face with glass droplets placed on her cheeks to imitate tears. [s 1] [s 4] Sleeping Woman: 1930 Man Ray Paris, France [s 2] See article Behind the Gare Saint-Lazare: 1932
Image credits: Photoglob Zürich "The product name Kodachrome resurfaced in the 1930s with a three-color chromogenic process, a variant that we still use today," Osterman continues.
1900 Fly swatter. A fly swatter is a hand-held device for swatting and killing flies and other insects. The first modern fly-destruction device was invented in 1900 by Robert R. Montgomery, an entrepreneur based in Decatur, Illinois. [75] On January 9, 1900, Montgomery was issued U.S. patent #640,790 for the "Fly-Killer". [76] 1900 Thumbtack
Skin is in! There have been no shortage of wardrobe malfunctions in 2017, and we have stars like Bella Hadid, Chrissy Teigen and Courtney Stodden to thank for that.