Kelvin’s Water Dropper
Kelvin’s Water Dropper is a form of electrostatic generator. Water from a single source is divided into two separate streams which fall into two separate metal buckets. Each stream passes through a ring which is connected by a wire to the opposite side’s bucket, with no contact between the buckets, wires, or rings. When rods are connected to each of the buckets and the ends are held closely together, an electric spark jumps the gap.