Spark Disc Charger

A spark disc charger is a laboratory apparatus used to charge objects with static electricity through a process called electrostatic induction. It consists of a metal disc connected to a high-voltage power supply, with a smaller metal disc placed above it and separated by a small gap.

When a charged object is brought close to the smaller disc, it induces an opposite charge in the disc and causes a spark to jump across the gap between the discs. This spark transfers charge to the smaller disc, which can then be used to charge other objects through electrostatic induction.

Spark disc chargers are commonly used in laboratory settings to charge objects with static electricity and to demonstrate the principles of electrostatics and the behavior of electric charges. They are also used in research to study the properties and behavior of static charges.