What makes CFL’s more efficient than incandescent lights?



  1. 0 Votes

    A light is generally considered more efficient when a larger part of the electricity it uses is converted into visible light.

    But light sources do not create only visible light. Importantly, they also create heat, and may create ultraviolet and other radiation. Sometimes those non-visible radiations are useful, for example growing plants indoors. Also, in a closed room, all light is eventually converted to heat. So if that room is being heated by electricity, the efficiency of any light in that room is 100%. “Efficient” depends on what use is made of the light.

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