The idea behind light is the electrically heated filament or gas in an enclosed compartment. The heated gas molecules glow as a result. This is very much the same as to neon lights. The term itself suggests the kind of gas being heated within the glass. Neon is a relatively light element which is readily part of the air that we breathe. However, the process of getting just a single pound of neon would require almost about 90 thousand pounds of liquefied air. Just imagine the amount of air processed to light up the whole Las Vegas commercial district in this case.
Designing the neon sign is actually harder than just molding the glass container into specifically desired shapes. For neon signs, the process of creating a continuous figure using only one long piece of glass tubing should be carefully done. This is because the current that has to pass through the whole neon sign should be linearly continuous without any allowance of getting in contact with another entity which might discharge it. Allowing it to happen may cause the whole lighting fixture to short out or even worse, burst. Neon signs are simply sensitive to differential currents that are present in its vicinity and should be properly noticed at all times.
The neon light tubing, which was invented by the French engineer and chemist Georges Claude in 1902 glowed a red tinge. However, previous years of discoveries in relation to light making have already produced different colors using different gases stable enough to be introduced with electric current. The first gas, Mercury produced a blue color. Then there came white and gold from Carbon Dioxide and Helium, respectively. Neon, also called as the "new gas" was the fourth, but had the catchiest name hence the popular term we now use today.