In Hollywood, Lamarr began inventing. Her most significant contribution to technology was her co-invention, with composer George Antheil, of an early technique for spread spectrum communications and frequency hopping, which paved the way for today's wireless communications. The invention in 1941 was deemed so vital to national defense that government officials would not allow publication of its details. At the Electronic Frontier Foundation's Sixth Pioneer Awards in 1997, she and George Antheil were honored with special awards for their "trail-blazing development of a technology that has become a key component of wireless data systems", and in 2014 Lamarr was inducted into the National Inventors Hall of Fame.
Lamarr appeared in numerous popular feature films, including Algiers (1938) with Charles Boyer, I Take This Woman (1940) with Spencer Tracy, Comrade X (1940) with Clark Gable, Come Live With Me (1941) with James Stewart, H.M. Pulham, Esq. (1941) with Robert Young, and Samson and Delilah (1949) with Victor Mature."
See more @ Wikipedia
More Info...