natural philosophy, physical science, physics - the science of matter and energy and their interactions

displacement, shift - an event in which something is displaced without rotation

abundance, copiousness, teemingness - the property of a more than adequate quantity or supply; "an age of abundance"

magnitude - the property of relative size or extent; "they tried to predict the magnitude of the explosion"

signal level - the amplitude level of the desired signal

background level, noise level - the amplitude level of the undesired background noise