Astrophysics (index)

Black-Body Radiation

(Thermal Emission)
(continuous spectrum characteristic of the temperature of a body)

Black-Body Radiation (Thermal Emission) is Electromagnetic Radiation (EMR) within and surrounding a body in Thermodynamic Equilibrium (TE) at a constant, uniform Temperature. This produces a Continuous Spectrum (a Continuum Emission, the Black-Body Spectrum) whose shape is dependent only on the temperature of the body.

Planck's law (Planck Function) describes the spectrum:

I(ν,T) = 2hν3/c2 × 1/(ehν/(kT)-1)


Referenced by:
Black Body (BB)
Continuous Spectrum
Continuum Emission
Planck Function
Power Law
Radiative Forcing (RF)
Star Formation Rate (SFR)
Shock Wave
Submillimeter Galaxy (SMG)
Stellar Parameter Determination
Synchrotron Radiation
Thermodynamic Equilibrium (TE)
Wien's Displacement Law