قانون ِ ریلی-جینز qânun-e Rayleigh-Jeans(#)
*Fr.: loi de Rayleigh-Jeans*
A classical law approximately describing the intensity of radiation
emitted by a → *blackbody*. It states that this intensity is
proportional to the temperature divided by the fourth power of the wavelength
(8π*kT*/λ^{4}). The Rayleigh-Jeans law is a good approximation
to the experimentally verified Planck radiation formula only at long wavelengths.
At short wavelengths it runs into a paradox named the
→ *ultraviolet catastrophe*. → *Rayleigh*; → *Jeans*;
→ *law*. |