Lecture9April17Short

Lecture9April17Short - 2-slit interference...

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Unformatted text preview: 2-slit interference patternIntensitylaserWavelength !Maxima at d sin(!) = n "2-slit pattern recorded on CCD array, bright lightMaxima at d sin(!) = n ", n = 0,+/- 1, +/- 2 (spacing proportional to wavelength of light)2-slit pattern recorded on CCD array, brightlight2-slit pattern recorded on CCD array, dimlight(same collection time)2-slit pattern on CCD array, dimmerlight2-slit pattern recorded on CCD array, dimlight Photons arrive 1 at a time, like particles Each photon lands at a point, like a particle Interference pattern becomes apparent onlyafter many photons have arrived.This is the wave-particle duality of photons.2-slit pattern onCCD array, evendimmerlightWhat do you get if you do the double slit experiment with neutrons?Neutrons are particles, with mn~ mpxso expect them to land only under the slit openings!What do you get if you do the double slit experiment with neutrons?...
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This note was uploaded on 06/24/2009 for the course PHYS 5 taught by Professor Freedman during the Spring '08 term at UCSB.

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Lecture9April17Short - 2-slit interference...

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