What innovative technology did Hedy Lamarr co-invent for military use?

Hedy Lamarr co-invented a technology known as spread spectrum and frequency hopping radio guidance, which was a significant advancement for military communications. This technology allows the secure transmission of radio signals by rapidly switching frequencies during transmission, making it much harder for enemies to intercept and jam communications. The innovation was intended to ensure the safe operation of torpedoes during World War II, allowing them to avoid detection and interference.

This capability laid the groundwork for many modern wireless technologies, including Bluetooth and Wi-Fi. Lamarr's work exemplifies how insights from unexpected areas can lead to transformative advancements in technology. Her contribution remains a vital part of discussions about the intersection between arts and science, illustrating how creativity can drive innovation in technology.