This is exactly what happens in neon signs and fluorescent lights. (The latter appear white because the inside of the bulb is coated with a material that glows white in the presence of UV light ...

Summary form only given. The conventional fluorescent lamp is a low-pressure mercury discharge device with a phosphor coating that converts ultraviolet light into visible light. Since mercury is toxic ...

Neon, argon, krypton and xenon: We investigate their uses, from the blinding light of the arc welder's torch to the dying trade of the neon sign-making. Show more Neon, argon, krypton and xenon ...