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Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene, and has numerous applications because it is chemically inert. [3] The commonly known brand name of PTFE-based composition is Teflon by Chemours, [4] a spin-off from DuPont, which originally discovered the compound in 1938. [4]
The General Atomics MQ-9 Reaper (sometimes called Predator B) is an unmanned aerial vehicle (UAV, one component of an unmanned aircraft system (UAS)) capable of remotely controlled or autonomous flight operations, developed by General Atomics Aeronautical Systems (GA-ASI) primarily for the United States Air Force (USAF).
Based on the number of copies found in the Dead Sea Scrolls, the Book of Enoch was widely read during the Second Temple period.Today, the Ethiopic Beta Israel community of Haymanot Jews is the only Jewish group that accepts the Book of Enoch as canonical and still preserves it in its liturgical language of Geʽez, where it plays a central role in worship. [6]