This quantity can be used to estimate one source of the Seebeck effect, phonon-electron drag. Debye modelled this quantity by considering a lattice populated by quantised vibrations, allowing the derivation of this quantity's T-cubed dependence at low temperatures. The Dulong-Petit law holds that this quantity approaches three times the molar gas constant for a mole of any solid substance. For 10 points, name this quantity of energy required to change the temperature of 
This quantity can be used to estimate one source of the Seebeck effect, phonon-electron drag. Debye modelled this quantity by considering a lattice populated by quantised vibrations, allowing the derivation of this quantity's T-cubed dependence at low temperatures. The Dulong-Petit law holds that this quantity approaches three times the molar gas constant for a mole of any solid substance. For 10 points, name this quantity of energy required to change the temperature of a body by a given amount.
This quantity can be used to estimate one source of the Seebeck effect, phonon-electron drag.