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Hi can u plz explain me the difference between refraction and diffraction?
This is not true.spacetime said:Another interesting fact is that though refraction can be explained if you take into account only the particle picture of light, diffraction cannot be explained.
spacetime
Physics
Probably the poster meant the NEWTONIAN particle picture of light...ZapperZ said:This is not true.
IF that is true (I doubt it), then someone is severely out-of-date.vanesch said:Probably the poster meant the NEWTONIAN particle picture of light...
Yes, I was wrong in what I said. Diffraction can indeed be explained using the photon picture, that is the particle nature of light. Actually, I was referring to the historical fact that diffracion could not be explained using the corpuscle picture, which could still have explained refraction by proper assumptions.ZapperZ said:This is not true.
Diffraction is a DIRECT manifestation of the Uncertainty principle based on the determination of a photon's transverse position by the slit. Furthermore, the Marcella paper that I've mentioned several times clearly derived purely using quantum mechanics of the diffraction pattern and the interference pattern from multiple slits.[1]
Zz.
[1] T.V. Marcella, Eur. J. Phys., v.23, p.615 (2002).
Yes, I was wrong in what I said. Diffraction can indeed be explained using the photon picture, that is the particle nature of light. Actually, I was referring to the historical fact that diffracion could not be explained using the corpuscle picture, which could still have explained refraction by proper assumptions.
Thanks Zz.
Especially since Young showed a wave model of light like over 100 years after Sir Isaac Newton was around...IF that is true (I doubt it), then someone is severely out-of-date.
Zz.
But remember that diffraction is observed even after we send a single photon through the slit...Yes, I was wrong in what I said. Diffraction can indeed be explained using the photon picture, that is the particle nature of light. Actually, I was referring to the historical fact that diffracion could not be explained using the corpuscle picture, which could still have explained refraction by proper assumptions.
Thanks Zz.
oh yes, Huygens idea. thanks for this!If the term 'diffraction' is taken to mean the way the propagation of a wave is affected by some sort of obstruction to its path then how is refraction anything other than subset of diffraction - just like interference is also a subset?
The results of all three can be calculated by integrating the contributions of the full width of incident wavefront to find out what happens beyond the structure of interest. (The Huygens idea)
The above is an essentially classical approach but I think it applies even if you want to include Quantum interactions.