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Classical waves cannot explain the photoelectric effect--True. But as I understand it, one can explain this with non-classical (quantized) waves, without invoking particles.
Classical waves alone can't explain the photoelectric effect, which is why the "duality" is required. (It requires light of above a certain frequency, not intensity to liberate an electron).
Quote from: JP on 08/05/2014 19:52:27Classical waves alone can't explain the photoelectric effect, which is why the "duality" is required. (It requires light of above a certain frequency, not intensity to liberate an electron).Ah, but, actually, increasing the intensity of low frequency photons can, in fact, liberate electrons. I saw an experiment done once in a institute where they used a very high intensity laser to excite fluorescent material with near infra-red radiation - explaining it with "squeezing two photons at an atom at once"..
Greetings. I was wondering about the nature of light.What are the experiments for pro-particle nature of light? The photovoltaic experiment?
It kinda makes sense that it must be a particle to excite just a single atom, right?
But what if the photon is still a wave, just a very narrow one? It could be narrow enough to excite just one atom, but still be a wave, couldnt it?
As the wave further travels, its width expands, but, as energy is conserved, it does so at the expense of its frequency - it gets lower.
And dont we see that in the universe already? The redshift of istant stars that we explain by the expanding universe, that isnt really understood at all..?