Smart Lady
Last week Zeitgeist Films released a biopic of Hedy Kiesler Markey, an inventor of U.S. Patent 2,292,387. This WWII patent envisioned that jumping between radio frequencies would avoid jamming of radio-guided torpedoes. The U.S. Navy rejected the frequency-hopping invention at the time and did not adopt the technology until much later. Frequency hopping is now widely […]

