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

Photoelectric Effect vs. Wave Model

  1. Apr 24, 2012 #1

    Mei

    User Avatar

    What are some things about the photoelectric effect that can not be accounted for in the wave model of light?
     
  2. jcsd
  3. Apr 25, 2012 #2

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    Too lazy to read wikipedia articles?
    Or do you have a specific questions to the things mentioned there?

    In addition, if you think of light as waves, a single electron would need ages to get enough energy to leave the metal.
     
  4. Apr 26, 2012 #3
    The main puzzling fact is that the energy of the ejected electrons does not depend on the brightness of the light and in normal circumstances this is what we associate withe the energy of light.
    Bright light means more energy.
    The energy of ejected electrons depends on the colour(frequency) of the light and you would not normally associate this with energy.
    Also electrons are ejected almost instantaneously and the should be a long time delay if the wave picture was true.
    You will need to search 'Wiki!' to find a simple, consise explanation. Wiki is a good reference source but, in my opinion, it is not a good teaching source.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook