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

Color of matter?

  1. Nov 20, 2007 #1
    How can one say what color a matter have by using optical reflectivity? I know how to calculate the plasmon energy and out of that can one can get the wavelength. So can one get the color of the wavelength or?

  2. jcsd
  3. Nov 20, 2007 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    If the reflection spectrum is relatively narrow, and peaked about a particular wavelength in the visible range, you can simply look up a chart like this one: http://hyperphysics.phy-astr.gsu.edu/hbase/vision/specol.html#c1

    If the relfection spectrum is anything else (broad or multimodal, for instance), you will have to resort to more sophisticated methods. If it is multimodal with each peak being narrow, then you can determine the resulting color by simply adding the individual components weighted by their peak (or integrated, depending on how similar the linewidths are) intensities.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Color of matter?
  1. An origin of color (Replies: 3)

  2. Manipulation of Matter (Replies: 2)

  3. The color of objects (Replies: 5)