Bell
(bĕl), Alexander Graham 1847-1922. British-born American inventor who received the first patent for the telephone (1876). Bell also invented the audiometer, an early hearing aid, and improved the phonograph.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Bell
(bĕl), Alexander Graham 1847-1922. Scottish-born American scientist and inventor. Bell's lifelong interest in the education of deaf people led him to conceive the idea of transmitting speech by electric waves. In 1876 his experiments with a telegraph resulted in his invention of the telephone. He later produced the first successful sound recorder, called a graphophone. Bell also invented the photophone, which transmitted speech by light rays; the audiometer, an early hearing aid; and many other devices.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.