Physics / Thermal Radiation
Blackbody Radiation Explorer
Planck's law & Wien's displacement — interactive spectrum visualizer
Temperature
K
Peak wavelength
—
Wien's displacement law
Spectral region
—
Peak radiance
—
W · sr⁻¹ · m⁻³
Total flux (Stefan–Boltzmann)
—
W · m⁻²
Planck curve
Peak wavelength (Wien)
Wien's law
λpeak = b / T b = 2.898 × 10⁻³ m·K
Planck function
B(λ,T) = 2hc² / λ⁵ · 1 / (ehc/λkT − 1)
Stefan–Boltzmann
j* = σT⁴ σ = 5.670 × 10⁻⁸ W·m⁻²·K⁻⁴