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Incandescent bulb

  1. Nov 27, 2007 #1
    As we know the incandescent bulbs emit mostly heat and very small amount of visible light.Is there any way to increase the proportion of the visible light? If there is why is it not employed???

    Can anyone help me to start with it?
  2. jcsd
  3. Nov 27, 2007 #2


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    Science Advisor

  4. Nov 27, 2007 #3


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    Staff: Mentor

    The only way to increase the output of an incandescent lamp is to increase the temperature, to move the peak of the black-body spectrum into the visible range.

    Or -- you can use a lamp that doesn't use black-body radiation to generate light (like fluorescents, as stewartcs linked).
  5. Nov 27, 2007 #4
    Best answer so far russ_watters

    Thank you.
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