Alexander Graham Bell was born in Scotland but spent most of his life in Canada and the United States, where he invented several devices for the transmission of sound. In 1876, after much experimentation, he developed what is generally considered to be the first practical telephone. Here is the story of the scientific ideas he mastered as he succeeded in making his working telephone.

The Explosion Zone books combine vivid color illustrations and lively text to tell the stories of important scientists and inventors. Narratives are supplemented with easy-to-understand explanations of the scientific principles that underlie each phase of the invention or discovery being discussed. Imaginatively illustrated two-page spreads include sidebars called Here's the Science, explaining the principles of physics or chemistry that relate to the story. A glossary at the back of each book presents short definitions of scientific and technological terms.

From the Back Cover

(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 Flight

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