Planck's law ( by wavelength)
Description
Planck’s law describes the electromagnetic radiation emitted from a black body at a certain temperature. Radiance and spectral radiance are measures of the quantity of radiation that passes through or is emitted from a surface and falls within a given solid angle in a specified direction.
Planckian spectral radiance can be measured by the wavelength of the radiation, as shown here
Related formulasVariables
B(λ,T) | spectral radiance (W*sr-1*m-3) |
h | Planck constant |
c | Speed of light |
λ | wavelength (m) |
e | e |
kB | Boltzmann constant |
T | absolute temperature (K) |