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Hedy Lamarr ... Vienna, Austria, November 9, 1914 ... Orlando, USA, January 19, 2000) was an actress, inventor and engineer in telecommunications Austria. It is known as "The most beautiful woman in the history of Cinema" and as the inventor of the first version of the spread spectrum.
Hedy Lamarr, a beautiful woman, also an actress, was a great engineer. Hedy invented the technology that is based on WiFi and 3G telephony. Serve these lines in honor of a woman as smart as brave. I want to especially emphasize her intelligence in this tribute ... She thought and not without reason .... than for men any woman could have only needed glamor to sit still and look stupid ....
Austrian nationality, his real name was Hedwig Eva Maria Kiesler, was the daughter of a banker and studied engineering, but left to pursue his true passion: cinema. Thus began the first stage as an actress working in Europe, which ended with "Ecstasy" Czech film in which she appears naked Hedy ... was the first time an actress undressed in a commercial film ...
  He invented and patented in 1940, the frequency switching technique that would restore notoriety in the last years of his life ... Hedy Lamarr and composer George Antheil received patent number 2,292,387 for its system of communications secrecy. This early version of frequency hopping (a modulation technique in spread spectrum signal) used a pair of perforated drums and synchronized (as a player piano) to change between 88 frequencies and was designed to build radio guided torpedoes that were impossible to detected by the enemy. Thus, all the wireless technologies we have today, both third-generation telephony as Wifi or Bluetooth, are based on random channel change. The quarterfinals, second-generation telephony (the well-known GSM), also is also digital, but in this case the interference problem was solved by a shift pattern, which makes the phone system and determines which master order must issue the phones, this scheme is much less efficient than frequency hopping, but the technology is much cheaper.
And this is how an inventor who fled despot of a husband who worked for the U.S. Army during World War II laid the foundation of modern digital communication systems.

Inventor's Day is celebrated on 9 November (his birthday) in his honor.

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