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

Silicon exhibits metallic luster

  1. Mar 28, 2007 #1
    why should silicon exhibit metallic luster when viewed in visible light, yet be transparent when viewed in infrared light?
  2. jcsd
  3. Mar 29, 2007 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2018 Award

    Look at the energy range of visible light, and look at the energy range of IR. Now compare those to the band gap of silicon.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook