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Hedy Lamarr: Actress Turned WWII Inventor
22 Jul
Summary
- Actress Hedy Lamarr co-invented frequency hopping.
- Her invention is a precursor to Wi-Fi and Bluetooth.
- Lamarr raised millions in war bonds during WWII.

Hedy Lamarr, celebrated for her striking beauty and Hollywood roles, was also a pioneering inventor. Born in Vienna in 1914, Lamarr's early life revealed a keen intellect, disassembling a clock at age five. After a controversial film debut and a marriage to an arms manufacturer, she emigrated to Hollywood, becoming a major star in 1938.
While her acting career flourished, Lamarr secretly worked on inventions. During World War II, she collaborated with composer George Antheil. Together, they patented a 'Secret Communication System' in 1941, utilizing frequency hopping to prevent signal jamming. This innovation was crucial for remote-controlled torpedoes.
Though their invention was not used by the US Navy during WWII, it became the technological bedrock for advancements like GPS, WLAN, and smartphones. The patent expired before Lamarr and Antheil profited. Lamarr also dedicated herself to the war effort, selling $25 million in war bonds and volunteering at the Hollywood Canteen.
Lamarr received delayed recognition for her inventive genius, notably the Electronic Frontier Foundation Pioneer Award in 1997. Decades after her death in 2000, she was posthumously inducted into the National Inventors Hall of Fame in 2014, hailed as 'the mother of Wi-Fi'.