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    3. what is the working principle of a mercury thermometer?
    what is the working principle of a mercury thermometer?

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    +1  Views: 420 Answers: 2 Posted: 12 years ago
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      Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.
      12 years ago. Rating: 0
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        expansion and contraction of the liquid mercury
        12 years ago. Rating: 0
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