PHYS 2004 Lecture 26: Phy 2004
1 Dec 2017
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Document Summary
The image to the right shows the intensity pattern recorded after. 50 kev electrons passed through two slits separated by 1. 0 mm. The pattern is clearly a double-slit interference pattern. Electrons, neutrons, atoms, and even molecules exhibit all the behavior we associate with waves. This is behind the idea of an atom interferometer. The figure below shows a particle of mass m moving in one dimension as it bounces back and forth with speed v between the ends of a box of length l. The particle moves in one dimension, and the collisions at the ends are perfectly elastic, so the particle"s energy entirely kinetic never changes. According to classical physics, there are no restrictions on the particle"s speed or energy. Since matter has wave-like properties, we should consider the particle in a box to be a wave reflecting back and forth between the ends of the box, as shown below.
