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In the early 1970s, National Foam, Inc. invented alcohol-resistant AFFF technology. AR-AFFF is a synthetic foam developed for both hydrocarbon and polar-solvent materials. Polar solvents are combustible liquids that destroy conventional fire-fighting foam.
Immediately after 3M chose to no longer manufacture PFOS in 2000, the company deployed Schaefer to develop a replacement for the Aqueous Film Forming Foams (AFFF). By 2002, Shaefer, who had worked for years on "foams used to put out forest fires", developed a fluorine-free foam that was able to put out jet fuel fires within 46 seconds.
Birth year Notable for NIHF [3] 1973 Thomas Edison: 1847 Electric lighting, motion pictures, phonograph [4] 1974 Alexander Graham Bell: 1847 Telephone [5] 1974 Eli Whitney: 1765 Cotton gin [6] 1974 Walter Brattain : 1902 Transistor [7] 1974 William Shockley: 1910 Transistor [8] 1974 John Bardeen * 1908 Transistor [9] 1975 Nikola Tesla: 1856 ...
Fetuses and children are especially vulnerable to the harms of PFAS chemicals because they have been shown to be linked to major adverse health conditions, including abnormally small birth weight syndrome in newborns, preterm birth, shorter lactation periods, breastmilk of diminished nutritional content, one or more neurodevelopmental disorders ...
AFFF may refer to : Film festivals. Asian Festival of First Films, a former film festival held in Singapore; Imagine Film Festival, formerly Amsterdam Fantastic ...
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 ...
Claude Shannon (1916–2016), founder of information theory and modern cryptography, invented Minivac 601, and co-invented the first wearable computer (with Edward O. Thorp) Ugo Cerletti (1877–1963), together with Lucio Bini (1908–1964), Italy – Electroconvulsive therapy; Leona Chalmers (c. 1937), U.S. – modern menstrual cup
Name Date invented Invented by Original purpose Civilian uses ASDIC: 1910s United Kingdom. France. Submarine detection Sonar: Radar: mid-1930s United Kingdom [1] [2] Early warning radar, air defence systems: Air traffic control systems, microwave oven: Walkie-talkie: 1930s Canada (Donald Hings) [3] United States (Alfred J. Gross, Motorola SCR-300)