COEFFICIENT OF EXPANSION Definition & Meaning

coefficient of expansion

noun

Physics.

the fractional change in length, area, or volume per unit change in temperature of a solid, liquid, or gas at a given constant pressure.

coefficient of expansion

noun

the amount of expansion (or contraction) per unit length of a material resulting from one degree change in temperature Also calledexpansivity

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�y��vlog History and Origins

Origin of coefficient of expansion¹

First recorded in 1870–75

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Example Sentences

Examples have not been reviewed.

“Adding cobalt, say, to clear glass changes the glass’s coefficient of expansion.”

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Here again the apparent agreement was largely due to errors in estimating the temperature, arising from the fact that the coefficient of expansion of platinum increases considerably with rise of temperature.

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In uniaxial crystals there are two principal coefficients of expansion; the one measured in the direction of the principal axis may be either greater or less than that measured in directions perpendicular to this axis.

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If the coefficient of expansion of these three layers differs, in other121 words, if the glaze does not fit, the result is crazing, that bugbear of the potter.

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The expansion of a gas 1⁄273 of its volume for every degree Centigrade, added to its temperature, is equal to the decimal .00366, the coefficient of expansion for Centigrade units.

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