Friday, November 4, 2011

The bel and Mr. Bell

Photo of Decible Meter courtesy of

The decibel (symbol dB, one-tenth of a bel) is a unit used in electrical engineering and acoustics to express relative loudness.  What I didn't know is that the bel was named after Alexander Graham Bell(1847-1922).

For more information, in addition to the links above see the website of The Alexander Graham Bell Family Papers at the Library of Congress.

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