The image shows a drawing of a machine with a light coming out of it, which appears to be an electrostatic generator.
Read full description
The image shows a drawing of a machine with a light coming out of it, which appears to be an electrostatic generator. The drawing is in black and white and shows the machine with its various components, including a cylinder, a handle, and a nozzle. The cylinder is connected to the handle and nozzle, and the nozzle is emitting a bright light.