Bell And the Science of the Telephone The Explosion Zone

(back cover) The Explosion Zone Bell and the Science of THE TELEPHONE What the scientists say: You can make a simple telephone using metal cans and a piece of string. Sound can be sent by light signals in fiber optic cables The cone shape of a bullhorn or megaphone stops sound waves spreading out too quickly and makes them travel further. Cell phones transmit your calls by radio waves TITLES IN THIS SERIES: Bell and the Science of the Telephone Curie and the Science of Radioactivity Faraday and the Science of Electricity The Wright Brothers and the Science of FlightWilliams, Brian is the author of 'Bell And the Science of the Telephone The Explosion Zone' with ISBN 9780764159725 and ISBN 0764159720.