Find the spectral radiance:

Determine spectral radiance by frequency:

Examine the shape of spectral radiance at Quantity[100,"DegreesCelsius"]:

Find the average wavelength:

Discover the color of the peak wavelength:

Explore all the properties of PlanckRadiationLaw:

Find the peak wavelength for 6000 K and its color:

Determine the peak frequency at 6000 K:

Find the integrated spectral radiance over wavelength or frequency:

Calculate the maximum radiance as a function of wavelength:

Calculate the maximum radiance as a function of frequency:

Note that the peak values do not correspond to the same wavelength of light:

Examine how the spectral radiance varies as a function of frequency:

Use the directional temperature, corrected for relativistic effects, to see how the peak for spectral radiance is shifted to longer wavelengths for an object moving at relativistic speeds:

Demonstrate Wien's displacement law, that the peak wavelength is inversely proportional to the temperature:

Find the radiant exitance by approximating the integral of Planck's law by integrating the dominant part of the spectrum and using Lambert's cosine law to derive the angular factor for a point on the black body's surface:

Divide by the fourth power of the temperature to find the Stefan–Boltzmann constant:

The formula used by PlanckRadiationLaw is the same as presented by FormulaData:

Compare Planck's radiation law to Wien's distribution law:

Compare Wien's distribution law to the Rayleigh–Jeans law and Planck's radiation law:

In a micrometer-sized box, quantum effects cause the minimum frequency possible to be the following:

Plot the energy density within this box, accounting for the finite size effect relative to a blackbody in an infinite cavity: