Difference Between Fluorescent & Incandescent Lights

How They Work

• Fluorescent bulbs produce light when an electric current flows between electrodes and reacts with a fill gas. An incandescent bulb produces light when its tungsten filament is heated to high temperatures.

Output

• A lightbulb's light output is measured in lumens. A fluorescent bulb can produce up to 100 lumens per watt of power, while incandescent bulbs produce about 15 lumens per watt.

Costs

• A fluorescent light bulb can cost more than $5, while an incandescent bulb can may cost 65 cents or less.

Fill Gas

• Both types of light bulbs feature fill gases to make them operate properly or more efficiently. Fluorescent bulbs typically contain mercury and argon, while incandescent bulbs can contain halogen.

Efficiency

• Fluorescent lightbulbs are much more efficient than incandescent lights. Much of the energy used to power an incandescent bulb is wasted by producing heat. Fluorescent bulbs burn much cooler.

Disposal

• Incandescent bulbs that have burned out can be thrown in the garbage. Fluorescent bulbs contain mercury, so they must be properly recycled.