Understanding the Inventions That Changed the World

Satellites and Cell Phones (1x31)

Date de diffusion: Août 31, 2013

We all have cell phones, but how many of us know how they actually work? Visit the world of communications satellites, radio towers, and mobile networks. You'll take an in-depth look at how bandwidth, infrastructure, and competition between companies like Motorola and AT&T have allowed for truly global communications.