Q: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Systems with a discrete upper energy limit can possess negative absolute values of this quantity. This quantity is defined as one over the energy partial derivative of the entropy; its reciprocal is referred to as beta. Mean kinetic energy is defined as one half times the Boltzmann constant times this quantity. The (*) third law of thermodynamics predicts an unattainable lower limit for this quantity, which is a measure of the average energy in a substance due to heat, called absolute zero, and this quantity is equal for two bodies in thermodynamic equilibrium. For 10 points, name this quantity, measured in scales like Kelvin.
A:
Science