Variable resistance Vertical electromagnetic tuning fork Vertical voltmeter Voltaic pile 1 Voltaic pile 2 Voltameter Volta's condensing electroscope Volta's cup crown cells Volta's electrophorus Volta's pistol 1 Volta's pistol 2 Waltenhofen's pendulum Water calorimeter Water hammer Watt's governor

Wedge Westphal balance Wheatstone bridge Window heliostat Wimshurst electric machine Winter electric machine Wire clot Wollaston's camera lucida Wollaston's cryophorus Wooden model of screw and nut Wooden model of vertical windlass Wooden model of winch Working section of a single-cylinder thermo-motor Zamboni's dry cell