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This article is about the ocular phenomenon. For the magnetic phenomenon, see Rayleigh law. For the stochastic distri andion, see Rayleigh distribution. For the wireless multipath filename extension model, see Rayleigh fading.
Rayleigh scattering causes the blue hue of the daytime chuck out and the reddening of the sunlight at sunset
Rayleigh scattering is more evident aft(prenominal) sunset. This picture was taken about one hour aft(prenominal) sunset at 500m altitude, looking at the horizon where the sun had set.
The beam of a 5 mW green laser pointer is visible at night partly because of Rayleigh scattering on various particles and molecules present in air.
Rayleigh scattering, named after the British physicist nobleman Rayleigh, is the elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the light. The particles may be individual atoms or molecules. It can occur when light travels by means of transparent solids and liquids, but is most prominently seen in gases. Rayleigh scattering is a function of the electric polarizability of the particles.
Rayleigh scattering of sunlight in the atmosphere causes diffuse sky radiation, which is the reason for the blue trick of the sky and the yellow tone of the sun itself.
Scattering by particles similar to or larger than the wavelength of light is typically case-hardened by the Mie theory, the discrete dipole approximation and other computational techniques. Rayleigh scattering applies to particles that are small with respect to wavelengths of light, and that are optically soft (i.e. with a refractive index close to 1). On the other hand, Anomalous Diffraction Theory applies to optically soft but larger particles.
Contents * 1 Small size controversy approximation * 2 From molecules * 3 Reason for the blue falsify of the sky * 4 In optical fibers * 5 In porous materials * 6 See also * 7 References * 8 Further...If you want to get a full essay, order it on our website: Orderessay
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