Find Temperature Formula for Varying Thermometer

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SUMMARY

The discussion centers on deriving a formula to determine the temperature of a thermometer based on a varying property, specifically pressure. The key equation identified is T = k.x + a, where T represents temperature, k is a proportionality constant, x is the varying property (pressure), and a is a constant offset. An example provided illustrates that if a pressure of 10 mmHg corresponds to 0°C, the formula can be used to find the pressure at other temperatures, such as 50°C. This linear relationship is essential for solving temperature-related problems in thermodynamics.

PREREQUISITES
  • Understanding of linear equations and proportionality
  • Basic knowledge of thermodynamic principles
  • Familiarity with temperature measurement units (Celsius, mmHg)
  • Concept of linear relationships in physics
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  • Research the derivation of linear equations in thermodynamics
  • Explore the relationship between pressure and temperature in gas laws
  • Study the application of the ideal gas law in temperature calculations
  • Learn about calibration methods for thermometers
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Homework Statement



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?

Homework Equations



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

The Attempt at a Solution


I don't want the answer to my question, just the formula.
 
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slaw155 said:
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?
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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