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Thermometers homework problem

  1. Sep 1, 2007 #1
    1. The problem statement, all variables and given/known data
    What is the ratio of the volume of the bulb of a thermometer to the volume of the thin tube in a bulb thermometer. It's not really a problem, but its just something I need to know to for my course. I can't find it anywhere else, so I was wondering if anyone knew it here.


    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Sep 5, 2007 #2

    mgb_phys

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    Homework Helper

    There isn't a fixed ratio. For maximum sensitivity you would try and make the bulb as large as possible and the tube as thin as possible.
    Generally it is fixed by the need to cover a particular range of temperatures in a given size of thermometer.

    See this thread for an explantion of why https://www.physicsforums.com/showthread.php?t=182225
     
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