bel (B)

bel (B): A unit of measure of ratios of power levels, i.e., relative power levels. Note 1: The number of bels for a given ratio of power levels is calculated by taking the logarithm, to the base 10, of the ratio. Mathematically, the number of bels is calculated as B = log₁₀(P ₁/P ₂) where P ₁ and P ₂ are power levels. Note 2 : The dB, equal to 0.1 B, is a more commonly used unit.

This HTML version of FS-1037C was last generated on Fri Aug 23 00:22:38 MDT 1996