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Is a photon in the form of a wave or a beam?

  1. May 24, 2010 #1
    Einstein stated that the form of a photon was in a beam because of the photoelectric effect. But light has to be in the form of a wave because of the electromagnetic spectrum (visible spectrum). Can somebody give good arguments on both sides?
     
  2. jcsd
  3. May 25, 2010 #2

    mathman

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    That's where quantum theory comes in. Take a look at Feynman's book "QED".
     
  4. May 25, 2010 #3
    maxwell's work demonstrates beyond a shadow of a doubt that photons are waves. einstein's work demonstrates beyond a shadow of a doubt that photons are particles. they both produced irrefutable evidence to support their claims. there, that should clarify everything for you...
     
  5. May 26, 2010 #4
    Thanks, so its still debated.
     
  6. May 26, 2010 #5

    HallsofIvy

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    No, it is not a question of whether they are waves or particles. Our whole concept of "particle" is a "macro concept"- we base it on objects large enough to see. At the size of elementary "particles", the whole concept of "particle" becomes vague. Photons, as well as electrons, neutrons, etc. have some of the properties we associate with particles and some of the properties we associate with waves.
     
  7. May 26, 2010 #6
    Thanks to all the people who answered it makes more sense now?
     
  8. May 27, 2010 #7
    Have you studied about "dual nature of electrons" in your high school,Photons are just like that.

    A beam of light is a wave or motion of particles of photon.
     
  9. May 27, 2010 #8
    Okay, Thanks. The electron is a wavicle right?
     
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