what is thermometer and mercury thermometer? explain
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Thermometer is a device used to measure the hotness or coldness of a body.
In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature. Mercury thermometers are used in households, laboratory experiments, and industrial applications.
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Thermometer is a device used to measure the hotness or coldness of a body..
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