Technoworld Satellites and Communications
Ian Graham
0739832557
Is a former library book. May have a stamp or writing on the inside cover of the book. May have a piece of tape on the cover, bar code, or the checkout form on the last page. See pictures for actual item.
How does a satellite work? How are live pictures and sounds transmitted across the world?
Communications have come a long way since the telephone was invented in 1876! Satellites and Communications explains in simple terms the different kinds of communications we use today - from video phones, interactive television, and the internet, to satellite links that can do anything from transferring telephone calls to telling ships and travelers their exact position anywhere on Earth.