Blackbody radiation theory establishes that electromagnetic energy is emitted by idealized opaque objects in thermal equilibrium based on their temperature, governed by Planck's law which introduces the quantization of energy into discrete packets (photons). This formulation resolves the theoretical inconsistency known as the ultraviolet catastrophe, demonstrating that classical Rayleigh-Jeans assumptions fail at high frequencies because they neglect the quantum mechanical limit where average emitted power approaches zero. The domain belongs to Quantum Mechanics and statistical physics, specifically relating thermodynamic temperature ($T$) to electromagnetic spectral density through Boltzmann's constant ($k_B = 1.38 \times 10^{-23} \text{ J/K}$).
Blackbody radiation theory establishes that electromagnetic energy is emitted by idealized opaque objects in thermal equilibrium based on their temperature, governed by Planck's law which introduces …