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Thermometer Changes

  1. Aug 25, 2014 #1
    1. The problem statement, all variables and given/known data

    What is the formula that allows you to find the temperature of any given thermometer that varies its temperature with some property? For example is a pressure of 10mmHg means 0degC, what would the pressure be at 50degC?

    2. Relevant equations

    This is what I'm looking for. I used to know the equation but I've completely forgotten.

    3. The attempt at a solution
    I don't want the answer to my question, just the formula.
     
  2. jcsd
  3. Aug 25, 2014 #2

    NascentOxygen

    User Avatar

    Staff: Mentor

    You are probably looking for a proportionality relationship, assuming the relation remains linear. Most linear relationships take the general form:

    T = k.x + a
     
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