The greatest Unsolved problems in Modern Physics. A Visual Thread 👇

"Be less curious about people and more curious about ideas." -- Marie Curie (1867 - 1934)

Hedy Lamarr, a famous Hollywood actress from the 1940s, was also a remarkable inventor. She co-invented a frequency-hopping system during World War II to prevent enemies from intercepting torpedoes. This invention laid the groundwork for today's Wi-Fi, GPS, and Bluetooth technologies. Born in Vienna in 1914 as Hedwig Eva Maria Kiesler, she starred in a number of European films before fleeing from her husband, a wealthy Austrian ammunition manufacturer, and moving to Hollywood. There, she became known as Hedy Lamarr and quickly rose to fame as one of the era's most popular and glamorous actresses. But beyond her acting career, Lamarr had a keen interest in science and technology. Her most notable contribution to technology came during World War II when she learned of the problems with radio-controlled torpedoes. At the time, Allied forces were using radio signals to control their torpedoes, but these signals were susceptible to jamming by enemy forces, which would send the torpedoes off course. With the aim of creating a more secure system, Lamarr, together with composer George Antheil, came up with the idea of frequency hopping. In their proposed system, the control signal would rapidly switch, or "hop," across multiple frequencies, according to a synchronized pattern known to both the transmitter and receiver but not to the enemy. Even if one frequency were jammed, the system would simply hop to the next, allowing the torpedo to reach its target. Though the U.S. Navy did not adopt Lamarr and Antheil's technology until the 1960s, the principles behind their frequency-hopping system are widely used today. Variations of frequency-hopping spread spectrum technology form the foundation of modern wireless communication technologies, including Wi-Fi, GPS, and Bluetooth. Despite the importance of Lamarr's invention, her contribution was largely overlooked for decades. It was not until 1997, when she and Antheil were honored with the Electronic Frontier Foundation Pioneer Award, that her work began to receive broader recognition. Later that year, Lamarr also became the first woman to receive the Invention Convention's BULBIE Gnass Spirit of Achievement Award, often dubbed "the Oscars of inventing." The story of Hedy Lamarr is a testament to the remarkable impact that curious and inventive minds can have, no matter what field they are traditionally associated with. It also underscores the importance of recognizing and celebrating the often underappreciated contributions of women to science and technology.