why is mercury used in clinical thermometers
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Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. ... It also has a high boiling point which makes it very suitable to measure higher temperatures. Also, it has a shiny appearance and doesn't stick to the glass surface of glass.
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A clinical thermometer is used to measure human body temperature. It consists of a long glass tube which is graduated. A thermometric liquid is present within the tube which expands proportionally to temperature,hence measures it.
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