MOSTRA TUTTI Astronomy Electricity Fluids Heat Studies Measurement Mechanics Optics ElectricityElectromagnetic pendulum ElectricityElectrophorus ElectricityFaraday apparatus for rotating a magnet ElectricityFranklin board ElectricityFranklin boards ElectricityFranklin’s six-plate battery ElectricityFuse valves ElectricityGrenet cell ElectricityHenley’s luminous conductor ElectricityHoltz’s electrostatic machine ElectricityInduction coil ElectricityInduction coil for therapeutic use ElectricityInduction coil with rotary switch ElectricityLamp lighter ElectricityLamp lighter ElectricityModel showing how a galvanometer works