Gain
In electronics, gain is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output. It is usually defined as the mean ratio of the signal output of a system to the signal input of the same system. It may also be defined on a logarithmic scale, in terms of the decimal logarithm of the same ratio ("dB gain"). A gain greater than one (zero dB), that is, amplification, is the defining property of an active component or circuit, while a passive circuit will have a gain of less than one.
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Famous quotes containing the word gain:
“Cease to ask what the morrow will hold and count as gain each day that Fortune grants.”
—Horace [Quintus Horatius Flaccus] (65–8 B.C.)
“Even a purely moral act that has no hope of any immediate and visible political effect can gradually and indirectly, over time, gain in political significance.”
—Václav Havel (b. 1936)
“Well: what we gain by science is, after all, sadness, as the Preacher saith. The more we know of the laws & nature of the Universe the more ghastly a business we perceive it all to be—& the non-necessity of it.”
—Thomas Hardy (1840–1928)