Nyquist's theorem

Nyquist's theorem

[′nī‚kwists ‚thir·əm]
(electronics)
The mean square noise voltage across a resistance in thermal equilibrium is four times the product of the resistance, Boltzmann's constant, the absolute temperature, and the frequency range within which the voltage is measured.
References in periodicals archive ?
May 10 /PRNewswire/ -- Most non-technical RF and Wireless professionals shudder with fear upon hearing terminology such as dB calculation, the Smith Chart, and Nyquist's Theorem.