P260 Demos T.L. Einstein Spring 2015
I3-16: COLLAPSE OF CAN - LARGE PUMP
With a constant volume of air in the chamber, measure the pressure P(B) at the boiling point and the pressure P(F) at the freezing point of water. If the pressure P is read at some arbitrary temperature T, then that temperature in degrees celsius is:
T=100 [P-P(F)] / [P(B)-P(F)]
For an ideal gas, the pressure should go to zero at the temperature of absolute zero. Setting P=0, the value of absolute zero in degrees celcius can be calculated.
Another way to do this is to plot a graph of pressure as a function of temperature. Draw the best line through the three points determined at boiling, freezing, and room temperature, and extend it so that it intersects the pressure axis, which is T=0 in celsius degrees.
I3-04: GALILEAN THERMOMETER
I2-22 THERMODYNAMICS BY TOUCH
P2-21 BLACK BODY MODEL
I6-03 EQUIPARTITION OF ENERGY