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Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
How does a thermometer measure temperature?
Accepted Answer
A thermometer measures temperature by detecting changes in some physical property of a system that is sensitive to temperature. Common types of thermometers include liquid-in-glass thermometers, which measure the volume of a liquid that expands or contracts with temperature; resistance thermometers, which measure the electrical resistance of a metal wire that changes with temperature; and thermocouples, which measure the voltage generated between two dissimilar metals that are joined at one end and subjected to a temperature difference.
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