Sunday, April 5, 2009

CFL vs. Incandescent


Did you know that the action of switching out an incandescent light bulb for a CFL (compact fluorescent light bulb) in every US household would be equivalent to removing the emissions of 1,000,000 cars? This is possible because of the more energy-efficient design of the CFL. While incandescent light bulbs rely on tungsten filament that uses more energy to produce heat than light, CFLs work using a different design. CFLs are made up of tubes with electrodes at their ends. The electrodes shoot electrons through the argon and mercury filled tubes. In turn, having recieved energy, the gases strike a phosphor coating inside a tube, which creates a fluorescent light. This virtually takes away the heat factor in using up energy. An incandescent light generally produces 15 lumens per watt, while a CFL produces 45 lumens per watt. That is why, when producing the same level of brightness, a CFL only needs a 1/3 of the amount of energy that the incandescent bulb uses.

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