caption: The image shows a diagram of a pendulum with a pendulums attached to it, along with text that reads "electrolysis of a single-phase motor". The pendulum is depicted in black and white, with the text written in a bold font. The diagram is composed of several components, including a motor, a capacitor, and a resistor, all connected by a series of wires. The motor is connected to the capacitor and resistor, and the resistor is used to control the speed of the motor. The text provides further information about the diagram, such as its purpose and how it works.