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.
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It is catalogued under the topic Dimensional instruments.
Vinony links it to 21 Wikipedia language editions.
Wikidata facts
- Subclass of
- measuring instrument
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- Commons category
- Dilatometers
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