Three-halves times this variable is proportional to the kinetic energy of a gas.
This variable appears in the denominator of thermodynamic beta. In a throttling process, the change in this quantity is described by the Joule-Thomson effect. Three-halves times this variable is proportional to the kinetic energy of a gas. Equilibrium with respect to this quantity is transitive according to the zeroth law of (*) thermodynamics. Gases have a standard value for pressure and this quantity, which is zero on one scale. One can add 273 to change between two scales for this quantity, while another conversion can be made by multiplying by nine-fifths and then adding 32. For 10 points, name this quantity with Kelvin, Celsius, and Fahrenheit scales.
This variable appears in the denominator of thermodynamic beta.
temperature (prompt on "T")