When a highly coherent beam of light is directed against a very fine wire, the shadow formed behind it is not just that of a single wire but rather looks like the shadow of several parallel wires.The explanation of this involves:
When the atmosphere is not quite clear, one may sometimes see colored circles concentric with the Sun or the Moon.These are generally not more than a few diameters of the Sun or Moon and invariably the innermost ring is blue.The explanation for these phenomena involves:
At the first minimum adjacent to the central maximum of a single-slit diffraction pattern the phase difference between the Huygens wavelet from the top of the slit and the wavelet from the midpoint of the slit is:
A plane wave with a wavelength of 500 nm is incident normally on a single slit with a width of 5.0 10-6 m.Consider waves that reach a point on a far-away screen such that rays from the slit make an angle of 1.0 with the normal.The difference in phase for waves from the top and bottom of the slit is:
The diagram shows a single slit with the direction to a point P on a distant screen (not shown).At P, the pattern has its second minimum (from its central maximum).If X and Y are the edges of the slit, what is the path length difference (PX)- (PY)?
The diagram shows a single slit with the direction to a point P on a distant screen (not shown).At P, the pattern has its maximum nearest the central maximum.If X and Y are the edges of the slit, what is the path length difference (PX)- (PY)?