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You can thank 1940s sex symbol Hedy Lamarr for today's Wi-Fi and Bluetooth devices
A new book details how the actress helped invent spread-spectrum radio technology, the precursor of modern wireless communications.
Tue, Nov 29 2011 at 12:46 PM
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Photo: James Vaughan/Flickr
Whenever you use your cellphone, Wi-Fi or a Bluetooth headset, you have actress Hedy Lamarr to thank.
Lamarr, born Hedwig Eva Maria Kiesler in Vienna in 1913, starred in classic films such as "Samson and Delilah" (1949), "Boom Town" (1940), "The Conspirators" (1944) and the Czechoslovakian film "Ecstasy" (1933), in which she famously became the first actress to simulate an orgasm on film.
But Lamarr's greatest long-term contribution to society was not as an actress but as an inventor. She and composer George Antheil co-invented early techniques for spread-spectrum communications and frequency hopping, technologies that were used for military communication for decades and which now form the core of many of today's most popular wireless devices.
The story of Lamarr, who had been keenly interested in science as a child, is detailed in the new book "Hedy's Folly: The Life and Breakthrough Inventions of Hedy Lamarr, the Most Beautiful Woman in the World" by Richard Rhodes, released this week by Doubleday.
Lamarr saw the danger of the rise of the Nazi party while married to her first husband, Austrian arms manufacturer Friedrich Mandle, in the 1930s. She escaped that marriage and moved to California where she became a Hollywood star and began her practice of inventing things during the long wait between shots.
"Hedy invented as a hobby," Rhodes writes in his book. "Since she made two or three movies a year, each one taking a month to shoot, she had spare time to fill. She didn't drink and she didn't like to party, so she took up inventing." She set up a drafting table to form an "inventor's corner" in her Hollywood home. Among her many projects was an improved stoplight, according to NPR.
This creative inspiration was well-timed — it dovetailed with the launch of the National Inventors Council, a place to gather novel ideas and inventions from the general public, according to Inventions.org.
Few of her ideas moved to fruition, but in 1940, the sinking of a cruise ship by Nazi U-boats inspired her to action. She came up with the idea of a radio signal that would "hop around from radio frequency to radio frequency," which would prevent it from being jammed, allowing torpedoes to be safely guided by radio from nearby airplanes, Rhodes recently told NPR.
Lamarr and Antheil worked on their idea for several months and then, in December 1940, sent a description of it to the inventors council. They were granted a patent for their "secret communication system" on Aug. 11, 1942. They gave the patent at no cost to the U.S. Navy, but the military sat on the idea and did not implement it until the 1960s, long after the patent had expired.
The secret communication system was not Lamarr's only contribution to the war effort. She also raised more than $25 million by promoting the sale of war bonds.
Lamarr and Antheil never profited from the invention, but it went on to become the core technology behind Wi-Fi networks and CDMA, or Code Division Multiple Access, cellphones. "The whole system spread like wildfire," Rhodes told NPR. "The most well-known application today is Bluetooth." All the while, the public has remained virtually ignorant of her contribution.
The Electronic Frontier Foundation gave Lamarr its Pioneer Award in 1997 for her role in creating spread-spectrum technology. The actress died in Florida in 2000.
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This is BULL SHIT, Bluetooth was invent solely by the danes of Denmark, Named after the Danish King Bluetooth
No it wasn't. It was invented by Ericsson Mobile Communications in Lund, Sweden, 1994. Learn your facts before you put anything in writing!
although the entire article may in fact be a true representation of the works of Hedy Lamarr, the title is extremely deceiving and false. The true inventor of wireless communication is Nikolai Tesla. Father of alternating current and most technology we use to this day. All well before the 1940's.
Tesla might ahve invented it, but he didn't do anything with it.
The article doesn't state that she invented wireless communications, but the frequency-hopping technique that forms the basis of CDMA. RIF!
I heard Bonhams Auction House in San Francisco is selling her jewelry next weekend.
I think this story is absolutley amazing. She had more brains than beauty and that's a lot of brains ! Who knew? And to think her idea is still used as the basis for such modern communications is incredible.
This isn't newly released information. Its been in the public domain for decades. I first read of Lamarr's contributions in the early 90's incidental to a hobby of mine. I've forgotten the name of the 40's and 50's code wizard someone mentioned but recall she was a retired US Navy Admiral.
It was Admiral Grace Hopper. Met her once
Commodore Hopper was an amazing lady in her own right; However, Her contribution was as a computer scientist. Lamarr's was RF engineering as the article illustrates.
If she knew what became of her inventions, she'd now invent a time machine, come back and destroy all of the plans.
And that Heddy, not Hedley.
That's HEDLEY!!
Actually it's Hedy Lamarr; Hedley Lamarr was a male character actor.
Hedley Lamarr was a character in Blazing Saddles played by Harvey Korman
She was the first Lady Heterodyne.
Nice accusation of sexism based on no evidence. What you don't acknowledge is that ALL inventors, except for a handful of famous ones, are usually ignored and forgotten. Without looking it up, can you name the three men who primarily invented television? Yeah I didn't think so.
John Logie Baird, Alexander Zworykin, and Philo Farnsworth.
I understand how colour Television works, too.
Funny thing about Mr. Farnsworth. I'd never heard of him until I googled "Farnsworth" after the communication devices used in the show Warehouse 13.
Ah yes common household names! Right up there with Hedy Lamarr and Steve Jobs!
Sorry for the double-post! It appeared that the system didn't accept the post the first time.
It's true that the Navy did not implement the frequency hopping, but that is primarily due to limitations of technology at the time. Nowadays it is widely used in civilian and military communication
Now that most of the world can "hear me now" we are discovering one of the unheralded brains behind the tech. I wonder how many others are out there. Tracking down the inventors and compiling a book about their work would be a worthwhile project.
She's a woman and she's beautiful. It's not really a surprise that she has been overlooked.
Actually, if you or I were to meet her we would probably not be thinking about her scientific breakthroughs either. She was incredibly beautiful and very open (proud?) of her extreme sexual behavior.
so what you are saying is- there is an international conspiracy against women, even though 50% of the world is women....? Is that what you are saying?
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