Q:

What is a CFL light bulb?

A:

Quick Answer

CFL, or compact fluorescent light bulbs, produce light when electricity is routed through a small tube that contains argon and mercury. When the electricity mixes with these gases, it produces light. CLF light bulbs use less electricity than incandescent bulbs.

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Full Answer

Despite using less electricity in the long run, CLF bulbs use more when they're first turned on. This is because it takes from 30 seconds to 3 minutes for the gases in the bulb to completely heat up and emit their full light.

When purchasing a CFL bulb, be sure to look for the ENERGY STAR label to save money and buy the right size bulb for the fixture.

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