Incandescent light bulb efficiency

Credit: ANIMATE4.COM/SCIENCE PHOTO LIBARY

Caption: Incandescent light bulb efficiency. Illustration showing the energy efficiency of an incandescent light bulb. Only 5% of the electrical energy of this 100 watt light bulb is converted into light, producing 1600 lumens of illumination. 95 watts (95%) is lost as heat. Incandescent bulbs have much lower energy efficiency and shorter lifespans than LED lamps and fluorescent lamps.

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