We finish our story about Hedy Lamarr and look at how frequency hopping works and is un underlying technology for many modern communications systems. And then we have some fun talking about celebrity inventions.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
