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

10 June 2025

COMMUNICATIONS

(noun) the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); “communications is his major field of study”


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Coffee Trivia

There are more than 50 countries that export coffee. They are near the equator, where the climate is conducive to producing coffee beans.

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