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Heat can be transferred ny radiation

  1. Dec 30, 2003 #1
    Heat can be transferred ny radiation. In-fra red radiation is emitted
    in pocess. Is the speed of In-fra red radiation emitted by all substances are the same?[?]
  2. jcsd
  3. Dec 31, 2003 #2


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    Staff Emeritus
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    Gold Member

    Yes, Infrared is electroMagnetic energy therefore it travels at c, the speed of light.
  4. Dec 31, 2003 #3


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    Staff: Mentor

    His post wasn't all that clear - perhaps he meant the rate of energy radiation, not the speed of the photons themselves. In that case, the answer is no - it depends on the material and temperature.
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