how does the fluorescent light bulb work

Here is one example of a tube light fixture consisting of a large heavy square “choke” or “ballast” and a small cylindrical “starter.” Let’s try to understand how the whole system works. Once the conduction of electrons between the electrodes is complete, no more heating of the filaments is required and whole system works at a much lower current. When exposed to the ultraviolet light, the particles emit a white light which we can see. Phosphors will give off light when exposed to light.

This is why the tube was coated with phosphorous. However, the light they emit is ultraviolet, and not visible to the naked eye, so another step needs to take place before we can see the light. As electrons return to their original energy level, they begin to release light. Electrons then collide with the gaseous mercury atoms, increasing the amount of energy. The energy also converts some of the mercury from a liquid to a glass. The process initially requires a relatively high amount of power. These electrode filaments are used to preheat the tube and initiate a rapid conduction of electrons between the two end electrodes. The tube is then finally sealed at low pressure with two filament electrodes each at its both ends. Its inner surface is coated with phosphorous and is filled with an inert gas, generally argon, with a trace of mercury. What’s Inside a Fluorescent Tube Light?Ī fluorescent lamp basically consists of a long glass gas discharge tube. People were amazed to see their houses and offices lit as brightly as cool daylight. In the mid-1930s when first fluorescent tube lights were introduced in the market, they were a total revelation.

How does the fluorescent light bulb work