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The hot comb was an invention developed in France as a way for women with coarse curly hair to achieve a fine straight look traditionally modeled by historical Egyptian women. [44] However, it was Annie Malone who first patented this tool, while her protégé and former worker, Madam C. J. Walker, widened the teeth. [45]
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 ...
1900 Margaret Abbott was the first American woman to win an Olympic event (women's golf tournament at the 1900 Paris Games); she was the first American woman, and the second woman overall to do it. [52] Carro Clark was the first American woman to establish, own and manage a book publishing firm (The C. M. Clark Company opened in Boston). [53] 1905
Hub van Doorne (1900–1979), Netherlands – Variomatic continuously variable transmission; John Thompson Dorrance (1873–1930), U.S. – Condensed soup; Amanda Minnie Douglas (1831–1916) – writer and inventor (portable folding mosquito net frame) Charles Dow (1851–1902), U.S. – Dow Jones Industrial Average
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 3] The Hague: 3 January 1930 Erich Salomon: The Hague, the Netherlands [s 2] Al Capone Mug Shot: 8 May 1930 Miami Police Department [40] Miami, United States [s 3] See article Behind the ...
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
Silicon retina able to process images in the same manner as a living retina [34] [35] Boone, Sarah: 1832–1905 Inventor Ironing board allowing sleeves of women's garments to be ironed more easily [36] [37] [38] Bouchet, Edward: 1852–1918 Physicist: First African-American to receive a PhD in any subject; received physics doctorate from Yale ...