Rayleigh Scattering
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Rayleigh Scattering
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Any scattering process produced by spherical particles
whose radii are smaller than about one-tenth the wavelength of the scattered radiation. Compare Mie scattering.
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In Rayleigh scattering, the scattering coefficient varies inversely with
the fourth power of the wavelength, a relation known as the Rayleigh law.
The angular intensity polarization relationships for Rayleigh scattering are
conveniently simple. For particles not larger than the Rayleigh limit, there
is complete symmetry of scattering about a plane normal to the direction of
the incident radiation, so that the forward scatter equals the backward scatter.
The Rayleigh scattering coefficient k_{s} is
Missing Image:img src="SP7_r_files/rayscat.gif"
where n is the number of scatters of diameter d; m is the index of refraction; and λ is the wavelength of the radiation. </dd>
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use