A change in the phase of a waveform.
- This is a quantum phenomenon in which the wavefunction of an electron acquires a phase shift as it follows a trajectory that encloses a magnetic flux (such as the path round the surface of a cylinder in a magnetic field).
- If the mirror is continuously moving (implying a velocity), then the phase shift measured by the interferometer will also be changing continuously.
- To calculate the effect of a lack of uniformity on a wavefront, we must both consider the movement of the reflecting surface from its ideal position and note any change in its phase shift on reflection.
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