Fluorescent lamp also known as fluorescent lamp. Fluorescent tube is a closed gas discharge tube.
The Main gas in the pipe is argon gas (argon) (the other contains neon or krypton) . It is about 0.3% of the atmosphere pressure.Also contains a few drops of Silver – forming trace mercury vapor. Mercury atom ratio accounts for one over one thousand of all gas atoms.
Fluorescent tubes of mercury by atoms, released by the process of gas discharge ultraviolet (main wavelength for 2537 = 2537 x 10-10 m). Electricity consumption by about 60% can be converted to ultraviolet light. Other energy is converted into heat energy.
Fluorescent lamp the tube inner surface of the fluorescent material to absorb ultraviolet light after the release of the visible light. Different fluorescent substances emit visible light. General ultraviolet light is converted to visible light efficiency is about 40%. So the efficiency of the fluorescent lamp is approximately 60% * 40% = 24%, about twice for the same power of tungsten filament lamp.