独学で周波数ホッピングその他を発明したハリウッド女優、ヘディ・ラマーについて。一部は訳を付けました。一部順序がおかしくなりました。Xの仕様のせいか、togetterで取り込む時にXで見えていなかったコメントが拾えています。

Physics In History @PhysInHistory

Hedy Lamarr was a famous Hollywood actress and a brilliant inventor who made significant contributions to the field of wireless communication. She co-invented a technique called frequency hopping, which is the basis of modern technologies such as WiFi, Bluetooth, and GPS. Frequency hopping is a method of transmitting radio signals by rapidly switching among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver. This makes the communication more secure and resistant to interference, jamming, and detection. Lamarr came up with the idea of frequency hopping during World War II, when she wanted to help the US Navy develop a radio-guided torpedo that could not be easily jammed by the enemy. She collaborated with composer George Antheil, who suggested using a piano roll to synchronize the frequency changes between the transmitter and the receiver. They patented their invention in 1942, but it was not adopted by the US military until the 1960s, when it was used in naval communication systems. Lamarr and Antheil did not receive any recognition or compensation for their work until 1997, when they were awarded the Electronic Frontier Foundation Pioneer Award. Lamarr also became the first female recipient of the BULBIE™ Gnass Spirit of Achievement Award, which is considered the “Oscars” of inventing. Lamarr’s scientific contributions were largely overlooked during her lifetime, as she was more known for her beauty and acting career. She died in 2000 at the age of 85. Today, she is widely regarded as one of the most influential women in STEM history, and a role model for aspiring female inventors.

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Garry J Carlson @garryjcarlson

@PhysInHistory Smart woman.

Ronith Sharmila @ronith_sharmila

Lamarr was a self-taught inventor. She did not have any formal training in engineering or science, but she was a natural problem-solver and had a keen interest in how things worked. Lamarr's self-taught nature is also evident in her other inventions, which include a submarine detection system and a method for improving the efficiency of gasoline engines.

TheOut-Cast @cast_theout

In the late 1930s, Lamarr was married to Friedrich Mandl, an Austrian arms manufacturer who was involved in selling weapons to various countries, including the Nazi regime. Mandl was possessive and controlling, and Lamarr felt trapped in the marriage. With the rise of Nazi influence in Austria, Lamarr, who was of Jewish descent, became increasingly concerned about her safety. She seized an opportunity to escape during a business trip with Mandl to London. While attending a lavish party, Lamarr disguised herself and fled to Paris. From there, she made her way to London and ultimately to the United States. Once in the United States, she pursued her acting career, and her talent and beauty quickly captured the attention of Hollywood.

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Fact Point @FactPoint

Here are some facts about Hedy Lamarr: Her real name was Hedwig Eva Maria Kiesler. She was born in Vienna, Austria on November 9, 1914. She was a successful actress in German and Austrian films before moving to Hollywood in 1937. She is best known for her roles in films such as "Algiers" (1938), "Samson and Delilah" (1949), and "The Contessa Desirée" (1954). She was also an inventor and developed a frequency hopping technology that is the basis for modern wireless communication systems such as WiFi, Bluetooth, and GPS. She was awarded the Electronic Frontier Foundation's Pioneer Award in 1997 for her contributions to the field of telecommunications. She died on January 19, 2000 in Florida at the age of 85.

jaap van till @jvantill

@PhysInHistory Also she contributed with CDMA (code devision multiplexing) for instance with piano tunes, which makes signals very robust against noise and disturbances.

Alexander 💎 @AConstatini

Hedy Lamarr born Hedwig Eva Maria Kiesler; November 9, 1914 – January 19, 2000) was an Austro-Hungarian-born American actress and inventor. She was a film star during Hollywood's Golden Age. After a brief early film career in Czechoslovakia, including the controversial Ecstasy (1933), she fled from her first husband, a wealthy Austrian ammunition manufacturer, and secretly moved to Paris. Traveling to London, she met Metro-Goldwyn-Mayer studio head Louis B. Mayer, who offered her a movie contract in Hollywood. She became a film star with her performance in Algiers (1938). Her MGM films include Lady of the Tropics (1939), Boom Town (1940), H.M. Pulham, Esq. (1941), and White Cargo (1942). Her greatest success was as Delilah in Cecil B. DeMille's Bible-inspired Samson and Delilah (1949). She also acted on television before the release of her final film, The Female Animal (1958). She was honored with a star on the Hollywood Walk of Fame in 1960. At the beginning of World War II, she and avant-garde composer George Antheil developed a radio guidance system for Allied torpedoes that used spread spectrum and frequency hopping technology to defeat the threat of jamming by the Axis powers.

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