Experimental Results, ft·lbf/Btu

Converted to Joules/

calorie

Error from today's value, %

838

4.51

7.74

770

4.14

1.05

823

4.43

5.88

819

4.41

5.35

772.692

4.159

0.598

If the gas temperature is

then mJT is

so the

gas

below the inversion temp.

positive

cools

above the inversion temp.

negative

heats