Rayleigh-Jeans law
In
physics,
Rayleigh-Jeans Law, first proposed in the
19th century, expresses the
energy density of
blackbody radiation of
wavelength λ as
where λ is in meters, T is the
temperature in
Kelvins, and
k is
Boltzmann's constant.
The law agrees with experimental measurements for long wavelengths but disagrees for short wavelengths.
Max Planck revised the law, which states:
where h is
Planck's constant, c is the
speed of light.