EMISSIVITY

Etymology

Noun

emissivity (plural emissivities)

(physics) The energy-emitting propensity of a surface, usually measured at a specific wavelength.

Source: Wiktionary


Em`is*siv"i*ty, n.

Definition: Tendency to emission; comparative facility of emission, or rate at which emission takes place, as of heat from the surface of a heated body.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

16 May 2025

AMPHIPROSTYLAR

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Coffee Trivia

In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.

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