Telephones

by Kristin Petrie

This book introduces the history of the invention of telephones, including its roots in the telegraph, inventors Alexander Graham Bell and Thomas A. Watson, Emil Berliner and Thomas A. Edison's improved transmitters, and Japan's introduction of cellular telephone service. Other chapters delve into the parts and systems that make telephone technology possible, from handsets and dialers to transmitters and receivers, as well as features such as caller...

• Format: Library Binding
• Language: English
• ISBN: 160453088X
• ISBN13: 9781604530889
• Release Date: August 2008
• Publisher: Checkerboard Library
• Length: 32 Pages
• Weight: 0.51 lbs.
• Dimensions: 0.3" x 8.0" x 8.0"
• Age Range: 8 to 11 years
• Grade Range: Grades 3 to 6