Radio at Work--Two-Way Communication

Program Description The earliest form of communication that humans can master is making sounds with our mouths: crying, babbling, and cooing draws adults to babies, just as speaking, shouting, or laughing brings older children and adults together. In-person language is limited though: what if you want to talk to a friend on vacation, or need to speak to a doctor across town? The discovery of electromagnetic radio waves and the invention of commercial radio units has transformed modern life, allowing for news, music, and art from far-flung areas to be brought into our own homes. From simple walkie-talkie toys, to ham radio hobbyists, to military satellites, radio waves have allowed our society to transfer information almost immediately via conversion to sound and light.