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What happens on the surface of a material

  1. Jul 8, 2013 #1
    Hello friends,

    Every object has certain color, because it reflects that potion of light & absorbs all other visible radiation,

    What is the mechanism that happens on the surface of a body, which makes it reflect certain portion & absorb rest portion.
  2. jcsd
  3. Jul 8, 2013 #2


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    Staff: Mentor

    How much do you know about quantum mechanics and electron energy levels?

    The basic idea: electrons in the material cannot react to all incoming light, just some frequency ("color") ranges. In those ranges, they can absorb and re-emit light, or absorb light and release the gained energy to the surrounding material.
    That is not a perfect description, and not all processes follow that pattern, but it should give some idea what happens.
  4. Jul 10, 2013 #3
    I have fair knowledge about electron energy level & quantum mechanics,

    can you please guide me to understand this phenomenon.

    Thank you.
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