Who's Who? Hedy Lamarr At the beginning of World War II , Lamarr and composer george antheil developed s radio guidance system for Allied torpedoes , which used spread spectrum and frequency hopping technology to defeat the threat of j amming by the Axis powers . she was born in November 9 1914 in Austria-Hungary She was married at the age of 19 to Friedrich Mandl, who despite his Jewish heritage was an arms dealer occasionally hosting such figures as Adolp...