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A unit used to express a ratio of powers, currents, etc., used especially in telecommunications to denote the attenuation of an amplitude A1 to an amplitude A2 as N nepers, where
N = ln(A2/A1).
1 neper = 8.686 decibels. The unit is named after John Napier (1550–1617), the inventor of natural logarithms.
From: neper in A Dictionary of Physics »
Subjects: Physics.
