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How to make light act like a particle?

  1. Aug 2, 2009 #1
    I have learned of quantum theory and I am doing a 4,000 word essay (IB FTW...). My question is "is light a particle or wave, and what effects it and why." I am going to be doing Thomas Young's double slit experiment which would show that light behaves as a wave (with DeBroglie's Hypothesis).

    I am having problems though because I need to do an experiment that shows that light is a particle also. I know that people have thought for centuries that light is particles because it bounces off things, though I don't know if that would be valid enough for an essay. Plus I think I would score higher if I did an experiment (instead of making "assumptions" in the essay).

    Edit: Wow, i'm retarded... I forgot about the photoelectric effect experiment. Do you know of any other experiments that are cheap enough for a high school student to do?
    Last edited: Aug 2, 2009
  2. jcsd
  3. Aug 2, 2009 #2


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    Einstein won his Nobel prize for explaining the photoelectric effect, which is described by light being made of particles. Look for the details for your essay.
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