Fig. 8 illustrates the time rate of change of the
calorimeter temperature after firing, corrected for
the small systematic heat transfer that takes place
between the bucket and the jacket. The area under
this curve is the temperature rise for the calorimetric
test. By applying the calorimeter model to the trailing
edge of this curve, it is possible to accurately complete
the integration in half the time it takes for the test to
finish using the traditional equilibrium treatment