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    Can someone summerise this as its a very common question, and will probably turn up on Thursday.

    1. What are the 4 ways in which light can behave as a wave and a particle, and explain the observation.

    2. Why does the particle theory disagree with the wave theory of light.
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    Waves: Can explain reflection, refracstion, interference, diffraction. Can't explain the photoelectric effect.
    Particles: Can explain reflection, refraction (sort of - requires light to speed up) and the photoelectric effect. Can't explain interference or diffraction.
    I guess the fact that neither of them can explain everything that light does leads to the wave-particle duality, and is the way that they disagree.
 
 
 
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Updated: June 14, 2005
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