Bel Definition
In physics, a measure of comparative power ratio, or relative loudness. In other words, a unit of power ratio. The number of bels is the decimal logarithm of the power ratio, which is expressed mathematically as follows: B = log 10 (P 1 /P 2 ) where B = Bel, and P 1 and P 2 are power levels. One bel is equal to 10 decibels. The bel is named for Alexander Graham Bell, inventor of the telephone, among other things. See Bell, Alexander Graham; decibel; logarithm; and power.
Other Word Forms of Bel
Noun
Origin of Bel
After Alexander Graham Bell
From American Heritage Dictionary of the English Language, 5th Edition
Named after Alexander G. Bell
From Wiktionary
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