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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 years.
Stephanie Kwolek, American chemist of Polish origin, who in 1965 created the first of a family of synthetic fibers of exceptional strength and stiffness. The best-known member is Kevlar , a material used in protective vests as well as in boats, airplanes, ropes, cables, and much more—in total about 200 applications.
A powerful para-aramid synthetic fiber, developed by Stephanie Kwolek at DuPont in 1965 Polonium and radium The discoveries of elements radium and polonium were made by Polish chemist Marie Curie through the deep study of their nature and their compounds .
1966 – Stephanie Kwolek invented a fibre that would later become known as Kevlar; 1968 – Liquid crystal display developed by RCA; 1970 – Silica optical fibers grown by Corning Incorporated; 1980 – Duplex stainless steels developed which resist oxidation in chlorides
A woman in Germany was sentenced to life for murdering her doppelgänger in 2022. The victim's family in Algeria found out about the verdict three weeks later.
Police believe Herb Baumeister targeted gay men and buried at least 25 victims on $1 million Indiana estate in the 1990s
Macy's has named 66 of the 150 stores that it's planning to close as part of its revitalization plan.. The retailer announced back in February 2024 plans to shut down 150 "underproductive" Macy's ...
Daily agenda. A personal organizer, also known as a datebook, date log, daybook, day planner, personal analog assistant, book planner, year planner, or agenda (from Latin agenda – things to do), is a portable book or binder designed for personal management.