The operation of this motor/generator unit impressively demonstrates the transduction of thermal energy into mechanical energy and then into electrical energy, whereby a light bulb (E 10 socket) is illuminated via an electrical conduction box (max. 12 V). Production of Electric Energy: The transformation of thermal energy into mechanical, then electric energy is demonstrated impressively via the motor / generator unit integrated into the pedestal. A light bulb is illuminated by the operation of the generator. Operation as a Cooling Unit and Heat Pump: To elaborate on the conversion of thermodynamic processes, the Stirling motor can be powered by its electric motor to change its mechanic torque, serving to remove thermal energy, e.g. produce cold, in one direction and to produce heat by operation in the opposite direction.