Atoms & Molecules

A:

Neon lights use glass tubes filled with a low-pressure gas that glows under high voltage. A sign maker shapes one or more of the tubes as desired, adds a fluorescent coating and then fills them with special gases. This assembly includes electrodes at each end of the tube connected to a transformer. When power is applied, the gas glows in the tubes, and the sign displays its message.

See Full Answer
Filed Under: