dilatometer
Sign in to savethumb|A simple structure of a dilatometer for the measurement of the thermal expansion of liquids and solids A dilatometer is a scientific instrument that measures volume changes caused by a physical or chemical process. A familiar application of a dilatometer is the mercury-in-glass thermometer, in which the change in volume of the liquid column is read from a graduated scale. Because mercury has a fairly constant rate of expansion over ambient temperature ranges, the volume changes are directly related to temperature.
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thumb|A simple structure of a dilatometer for the measurement of the thermal expansion of liquids and solids A dilatometer is a scientific instrument that measures volume changes caused by a physical or chemical process. A familiar application of a dilatometer is the mercury-in-glass thermometer, in which the change in volume of the liquid column is read from a graduated scale. Because mercury has a fairly constant rate of expansion over ambient temperature ranges, the volume changes are directly related to temperature.
==Applications==
Excerpted from Wikipedia’s “dilatometer” article, available under the CC BY-SA 4.0 licence.