Operational definition of temperature (t) Need: (1) substance t (2) property that depends on (3) reference points (4) interpolation scheme between ref. pts. Example: Ideal Gas Thermometer with the Celsius scale. Based on Boyle’s Law f lim = p t for fixed t depends on t the substance is a gas the property boiling point freezing point the and water are the reference points linear the interpolation is p 0 C)(1+At) f(t)=f(0 Experimental result: 0.0036609 = 1/273.15 A -273.15 0 100 C Note: special C is called the absolute zero, t C
Operational definition of temperature (t) Need: (1) substance (2) property that depends on t (3) reference points (4) interpolation scheme between ref. pts. Example: Ideal Gas Thermometer with the Celsius scale. Based on Boyle’s Law lim p t for fixed t depends on t the substance is a gas the property the boiling point and freezing point water are the reference points the interpolation is linear p 0 f(t)=f(0 C)(1+At) Experimental result: A = 0.0036609 = 1/273.15 -273.15 0 100 C Note: C special t C is called the absolute zero, f
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