Noun
A neon lamp.
The light from such a lamp.
Source: en.wiktionary.orgThis was transmitted by AM radio waves to a receiver unit, where the video signal was applied to a neon light behind a second Nipkow disk rotating synchronized with the first. Source: Internet
Instead they produced a colorful glow discharge (as in a modern neon light ), caused when the electrons or ions struck gas atoms, exciting their orbital electrons to higher energy levels. Source: Internet