6. Hedy Lamarr
Hedy Lamarr is often remembered for her dazzling Hollywood career, but her true brilliance lay in her inventive mind. During World War II, Lamarr co-developed frequency-hopping spread spectrum technology to help secure Allied radio communications. While her invention was overlooked at the time, it later became the backbone for modern wireless technologies like Wi-Fi and Bluetooth. Lamarr’s scientific achievements were finally recognized decades later, making her not just a film icon but a trailblazer in technology. Discover her innovations
