HYSTERESIS

hysteresis

(noun) the lagging of an effect behind its cause; especially the phenomenon in which the magnetic induction of a ferromagnetic material lags behind the changing magnetic field

Source: WordNet® 3.1

Etymology

Noun

hysteresis (countable and uncountable, plural hystereses)

A property of a system such that an output value is not a strict function of the corresponding input, but also incorporates some lag, delay, or history dependence, and in particular when the response for a decrease in the input variable is different from the response for an increase. For example, a thermostat with a nominal setpoint of 75° might switch the controlled heat source on when the temperature drops below 74°, and off when it rises above 76°.

Magnetic friction in dynamos, by which every reversal of magnetism in the iron causes dissipation of energy.

Source: Wiktionary

Hys`te*re"sis, n. Etym: [NL., fr. Gr. (Physics)

Definition: A lagging or retardation of the effect, when the forces acting upon a body are changed, as if from velocity or internal friction; a temporary resistance to change from a condition previously invuced, observed in magnetism, thermoelectricity, etc., on reversal of polarity.

Source: Webster’s Unabridged Dictionary 1913 Edition

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