How does a neon sign work?
Neon is a stable gas found in large quantities in the universe, but only as a small percentage of Earth's atmosphere. It is a common misconception that all neon signs contain only neon gas. A neon sign containing only neon gas lights up red-orange. If the sign is to light up in other colors, it requires mixing other gases and elements in the neon sign. The most commonly used are argon, mercury, krypton, helium and xenon.
Continue Reading