neper


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neper

(ˈneɪpə; ˈniː-)
n
(Units) a unit expressing the ratio of two quantities, esp amplitudes in telecommunications, equal to the natural logarithm of the ratio of the two quantities. Symbol: Np or N
[C20: named after John Napier; the name was approved in 1928]
References in periodicals archive ?
NEPER Nuclear and Cytoplasmic Extraction Reagents were purchased from Thermo Fisher Scientific Inc.
Donde r es la tasa de interes (notese que aqui 'e' es la base de los logaritmos naturales, o constante de Neper, y no la variable contaminacion como en las ecuaciones 26 y 27) y el periodo de vida espera do del recurso es representado por t.