Classic film star Hedy Lamarr was celebrated for her appearance but what many people didn't know was that she also co-invented a method of communication that underlies many technologies today. We learn more about Hedy Lamarr and frequency hopping.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices
