As long as there is light the circuit can keep pushing and the pendulum swings forever. If it happens to stop a jolt from the coil starts the pendulum swinging and the rest of the circuit takes ...

THE electromagnet designed for the use of oculists ... It must be placed horizontally, and its circuit must be made and broken by the operation of a pedal. 3. The working pole must have a form ...

In a telegraph a switch opens and closes an electric circuit. In Morse's original design, the receiving device used an electromagnet, powered by the electric current in the circuit, to raise and ...

Everything you own that uses electricity will have an electric circuit. These circuits are made up of different electrical components. VOICEOVER: "The battery pushes electricity along the wires ...