why do barometers contain mercury rather than water or other liquids?

  • Thread starter Thread starter kumorifox
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kumorifox

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If you had water in a barometer, it would have to be 10 metres high to be able to read. This would be extremely unwieldy. Mercury has a much higher density, so it forms a column of only 76 cm, which is much easier to maintain and read.
 
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