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Planck Spectrum Recovered from Transition Statistics

Einstein showed that his statistical rules for absorption, spontaneous emission and induced emission can reproduce Planck's black-body radiation law under thermal equilibrium.

Albert Einstein lecturing in Vienna in 1921
Albert Einstein lecturing in Vienna, 1921. Photograph by Ferdinand Schmutzer — public domain. Wikimedia Commons source.
Read the explainer →Year 1916BerlinPhysics

Planck Spectrum Recovered from Transition Statistics

1916 · Berlin · Germany · Physics

Einstein showed that his statistical rules for absorption, spontaneous emission and induced emission can reproduce Planck's black-body radiation law under thermal equilibrium.