Others

Neon is often used in signs and produces an unmistakable bright reddish-orange light. Although still referred to as & quot;neon& quot;, all other colors are generated with the other noble gases or by many colors of fluorescent lighting.
Neon is used in vacuum tubes, high-voltage indicators, lightning arrestors, wave meter tubes, television tubes, and helium-neon lasers. Liquefied neon is commercially used as a cryogenic refrigerant in applications not requiring the lower temperature range attainable with more extreme liquid helium refrigeration.
Both neon gas and liquid neon are relatively expensive – for small quantities, the price of liquid neon can be more than 55 times that of liquid helium. The driver for neon& acute;s expense is the rarity of neon, which unlike helium, can only be obtained from air.
The triple point temperature of neon (24.5561 K) is a defining fixed point in the International Temperature Scale of 1990.