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Principal of Compact Fluorescent Bulbs
Compact fluorescent bulbs generate their light on the same principle as fluorescent lamps. An electrical charge is passed through mercury vapour between two electrodes. This electrical field causes the vapour to emit invisible UV radiation. Fluorescent material applied to the inside of the glass tube converts the UV radiation into visible light. Different fluorescent materials give the light different colour appearances.
By giving the lamps more than one tube and bending each tube back on itself, lamp designers have managed to reduce the overall length of compact fluorescent bulbs. They are now not much bigger than ordinary light bulbs.
The compact fluorescent bulb provides you with a lot more light wherever you need it. The amount of light you can get from a conventional bulb is restricted by its wattage - a restriction that doesn't apply with the ESL(compact fluorescent bulb). Because they generate a lot less heat than conventional bulbs, you never need to worry about keeping within the recommended wattage rating again.
Take the example of a light fitting that has a 60 W restriction. Fit a 23 ESL and you ' ll get a light output that is equivalent to a 120 W incandescent.
This means you can get twice the brightness - without having to add another lamp
This article introduces the principal of compact fluorescent bulbs.
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Compact Fluorescent Bulbs
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