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Diffraction when the wavefront is not parallel to the plane

I am studying Feynman's chapter on the origin of the index of the refractive index (see this link). If I am not mistaken, what he does is to prove that when a wave enters a medium (modelled as a ...
Plop's user avatar
  • 507
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Doppler shift from a moving reflector and source if only the relative velocity is known?

Suppose there is a device which is producing and listening to sound (sonar), a reflector is moving with respect to device and the velocity of reflector and device with respect to the air is not known, ...
Pradyuman's user avatar
  • 866
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How much does quantum uncertainty contribute to the uncertainty of earthquakes?

More abstractly, the topic is: amplification of quantum uncertainty within dynamically unstable systems. I'd like to have a calculable toy model, e.g. maybe a quantum version of the famous "...
Mitchell Porter's user avatar