Hedy Lamarr
Actress and co-inventor of a frequency-hopping guidance system.
Hedy Lamarr was an Austrian and American actress and inventor. She was a successful film star in Hollywood and also co-invented a radio guidance system during World War II that used spread spectrum and frequency hopping technology.
- born
- November 9, 1914
- died
- January 19, 2000
- field
- Actress, Inventor
- nationality
- Austrian, American
- known_for
- Co-inventing a radio guidance system for Allied torpedoes; film star in Algiers (1938) and Samson and Delilah (1949)
Verified Timeline
Lore & Background
Hedy Lamarr was born Hedwig Eva Maria Kiesler in 1914 in Vienna, the only child of Gertrud and Emil Kiesler. Her father was a bank director, and her mother was a pianist. As a child, she showed an interest in acting and won a beauty contest at age 12. She also learned about technological inventions from her father. After a brief early film career in Czechoslovakia, including the controversial erotic drama Ecstasy (1933), she fled from her first husband, Friedrich Mandl, and secretly moved to Paris. Traveling to London, she met Louis B. Mayer, who offered her a film contract in Hollywood. Lamarr became a film star with her performance in Algiers (1938) and achieved further success with Boom Town (1940) and White Cargo (1942). Her most successful film was Samson and Delilah (1949). She was honored with a star on the Hollywood Walk of Fame in 1960.
Reader's Guide
At the beginning of World War II, along with composer George Antheil, Lamarr co-invented a radio guidance system for Allied torpedoes that used spread spectrum and frequency hopping technology to defeat the threat of radio jamming by the Axis powers. This approach, conceptualized as a 'Secret Communication System', was intended to provide secure, jam-resistant communication for weapon guidance by spreading the signal across multiple frequencies. Similar technology was used in operational systems only beginning in 1962, well after World War II and three years after the expiry of the Lamarr–Antheil patent. Frequency hopping, which existed before the patent, is a foundational technology for spread spectrum communications. Its principles are utilized for secure wireless networking, including Bluetooth and early versions of Wi-Fi, which use variants of spread spectrum to protect data from interception and interference. Lamarr's legacy thus extends beyond her film career to include a foundational contribution to modern wireless communication.
Did You Know?
- Lamarr co-invented a radio guidance system for Allied torpedoes during World War II using spread spectrum and frequency hopping.
- Her most successful film was the religious epic Samson and Delilah (1949).
- She fled her first husband, Friedrich Mandl, by disguising herself as her maid or by another account, and moved to Paris.
- She was not baptized as a child, though her mother raised her as a Christian.
Frequently Asked Questions
Who is Hedy Lamarr?
Hedy Lamarr was an Austrian-American actress and inventor who rose to major Hollywood stardom while also making a groundbreaking contribution to wireless technology. She is celebrated as a woman who excelled in both the entertainment and engineering worlds during the 20th century.
What did Hedy Lamarr invent?
During World War II she co-developed a radio guidance system for Allied torpedoes that employed frequency-hopping and spread spectrum techniques. This work became a foundational concept for later wireless communication technologies.
What are Hedy Lamarr's most famous films?
She headlined the 1938 picture Algiers and starred in the 1949 epic Samson and Delilah. These roles solidified her reputation as one of the era's most in-demand leading ladies.
Why is Hedy Lamarr important to film history?
She proved that a woman could command top-tier Hollywood stardom while simultaneously delivering critical technical innovation to the Allied war effort. Her dual legacy broke the assumption that women in entertainment had to choose between artistic and scientific achievement.
When was Hedy Lamarr born and when did she die?
She was born on November 9, 1914, in Austria, and died on January 19, 2000. She held both Austrian and American nationality throughout her life.
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