Velocity, most probable138 Velocity, root mean square127 Vibration, bands of HBr719 Vibration, energy of705718 Vibrational motion, contribution of, to specific heat718 Vibrations of continuous media663—666 Vieille90 Virial coefficients397 Virial coefficients, second424 Virial theorem of Clausius416 Virial theorem of Clausius, deduction of Van der Waals' equation from415 Viscosity, analysis of, from kinetic theory165 Viscosity, discussion of results on169 Viscosity, relation of, to thermal conductivity173 Viscosity, variation of, with temperature and pressure170—172 Volta347 Von Babo170 Von Platen490 Von Wartenberg458468 Vries and Rodebush795 Waage783 Wadsworth676 Waidner25 Waldman181 Walker459 Wangenheim44 Wanner689 Wanner pyrometer689 Warburgsee "Kundt and Warburg" Warburg and von Babo170 Wartenberg458468 Water, boiling point of21 Water, boiling point of, effect of pressure on326353 Water, expansion of566 Water, freezing point of2 Water, freezing point of, effect of pressure on325 Water, phase diagram of443 Water, specific heat of70 Water, vapour pressure of928 Water-stir pyrheliometer692 Watt227 Wave function, symmetric and antisymmetric807 Wave mechanics879 Wave mechanics, relation of, to new statistics879 Wave mechanics, uncertainty relations in883 Weber42604608 Weeks678 Weight factor due to nuclear spin760