Hedy Lamarr was an inventor as well as a major Hollywood star.During the second world war, Lamarr co-created a device that would make America’s radio-guided torpedoes harder to detect. The patent was submitted in 1942 but the idea was not implemented until 1962, when it was used by US ships during the blockade of Cuba. Lamarr’s invention later formed the basis for modern Wi-Fi networks
