Applications and Uses

Neon is most notable for its use in neon lighting and signs. These neon lights are made with filled glass or plastic tubes with Neon gas.  As electricity passes through these tubes, electric discharge produces high-energy electrons that hit the neon atoms changing their energy state, as photon of light is emitted. These glass tubings can be shaped and twisted to form various designs.

It is a common misconception that all “neon” lights are made entirely of neon, as they do not change colors. Tubes filled solely with the Ne (g) emit the bright orange-red color. The different colors of lights are made by mixing other noble gases and elements. Over 150 colors can be made. (Ex: Mercury emits a light blue color). Other commercial uses for Neon are in high-voltage indicators, TV tubes, lightning arresters, and helium-gas lasers. Also, liquid neon is used as an economical cryogenic refrigerant.

*(Lightning Arrestor in a telephone pole to limit power surges)