How Are An Electric Bulb, Fluorescent Light And Neon Light Different From Each Other?

           An electric bulb produces light when electric current passes through the metal filament which is known as tungsten. It is coiled inside the bulb. For fluorescent lamps, there is no filament to glow and light is produced when electric current passes through the ionized molecules of gas. Here, the gas being a poor conductor requires a very high voltage in the beginning. This is produced by a device which is known as a choke. Once started, and after the gas gets ionized, the current flows easily and high voltage is no longer required.

           In neon lamps, the gas inside it is neon which has the ability to emit a different kind of a light which is quite smooth and has a blue colour tinge.

           An ordinary bulb does not require a choke or a starter as the current can easily pass through the filament. However, the filament may burn out in the presence of oxygen and so the inside of the bulb is kept under vacuum which means there is no gas inside. Or, as an alternative, an inert gas like argon may be filled in the bulb.