Click through for a radio program talking about Hedy Lamar's life AND her contributions to technology during the war.
As she was inventing, Rhodes says, Lamarr was simultaneously glued to the events of World War II. When German submarines began targeting passenger cruise liners, he says, she felt compelled to invent something to help the Allied cause. She zeroed in on torpedoes, which were powerful weapons but hard to control. Rhodes says she thought that if they could be radio-guided, there was a better chance they would hit their target.
"She understood that the problem with radio signals was that they could be jammed. But if you could make the signal hop around more or less randomly from radio frequency to radio frequency, then the person at the other end trying to jam the signal won't know where it is," he says. "If they try to jam one particular frequency, it might hit that frequency on one of its hops, but it would only be there for a fraction of a second."
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