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PHY322S Atomic Physics Double Slit experiment: interpretation Feynman Lectures Vol 3 Ch2 Interference pattern persists at low intensity, even with one atom arriving at a time: Particle goes through both slits. Wave behaviour shown by a single atom: matter-wave inteferes with itself. If we try to detect which slit particle went though, interference pattern vanishes: we cannot see particle and wave nature at the same time. The importance <strong>of</strong> the two-slit experiment has been memorably summarized by Richard Feynman: . . . phenomenon which is impossible, absolutely impossible, to explain in any classical way, and which has in it the heart <strong>of</strong> quantum mechanics. In reality it contains the only mystery. 34
PHY322S Atomic Physics . Double slit experiment - bibliography See Physics World(September 2002) article http://physicsweb. org where the double-slit experiment was voted the most beautiful experiment in physics. 35
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