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Stephanie Louise Kwolek (/ ˈ k w oʊ l ɛ k /; July 31, 1923 – June 18, 2014) was a Polish-American chemist best known for inventing Kevlar (poly-paraphenylene terephthalamide). ). Her career at the DuPont company spanned more than 40 ye
After 24 horus, one goat died and the others had wounds that were not life threatening. [ 6 ] [ 1 ] Shubin received a $5 million grant to research the use of the fabric in bullet-proof vests. In 1975, the federal government distributed 5,000 Kevlar vests to 15 police departments.
Kevlar (para-aramid) [2] is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora.Developed by Stephanie Kwolek at DuPont in 1965, [3] [2] [4] the high-strength material was first used commercially in the early 1970s as a replacement for steel in racing tires.
He was the inventor of the first Walkie-Talkies and one of the authors of his company success in the fields of radio communication. [ 43 ] Benoit Mandelbrot : mathematician of Polish descent, known for developing a theory of "roughness and self-similarity " and significant contributions to fractal geometry and chaos theory ; Mandelbrot set .
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Walter Frederick Morrison, the inventor of the plastic flying discs that eventually became known as the Frisbee, died at his Utah home on Tuesday. He was 90 and is survived by three children. For ...
Ten weeks to the day before a Harlem-born inventor died after slitting his throat in a Rikers Island jail cell, he stood before a Manhattan judge to make a desperate plea.
Second Chance is an American body armor manufacturing company. The company was founded in the early 1970s by U.S. Marine and pizza delivery owner/driver Richard Davis. Davis developed the idea of a bulletproof vest after shooting three armed robbers in self-defense during a delivery.