“At the beginning of World War II, along with avant-garde composer George Antheil, she co-invented a radio guidance system for Allied torpedoes that used spread spectrum and frequency hopping technology to defeat the threat of radio jamming by the Axis powers.” https://en.m.wikipedia.org/wiki/Hedy_Lamarr ↗️
Hedy Lamarr inventor standing next to schematic printout of frequency hopping
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