Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Why is gold golden in colour?

  1. Apr 28, 2009 #1
    Gold being a very good conductor should reflect almost all light incident on it and should be appearing white or at least gray. then why is it golden.....?????
    pls do reply a detailed answer
     
  2. jcsd
  3. Apr 28, 2009 #2

    Ben Niehoff

    User Avatar
    Science Advisor
    Gold Member

    It has to do with relativistic corrections. Since gold is such a large atom, its electrons are moving very fast (effectively).
     
  4. Apr 29, 2009 #3

    alxm

    User Avatar
    Science Advisor

    Specifically a transition to the p-orbital/band which is in the ultraviolet in Ag is shifted down into the blue in gold, giving it absorption in the blue range, hence a yellowish color, since that's the complementary color to blue.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Why is gold golden in colour?
  1. Mass of colours (Replies: 5)

  2. Fermi Golden Rule (Replies: 6)

  3. Fermi's Golden Rule (Replies: 3)

  4. Fermi golden rule (Replies: 1)

Loading...