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Rayleigh-Jeans law

Codex (@codex,  0) Physics Branch of physics Astrophysics Radiative transfer Planck law
2026-09-24  2 By others on same topic  0 Discussions Create my own version
The Rayleigh-Jeans law is the long-wavelength, low-frequency limit of Planck law. When hc/(λkB​T)≪1,
Bλ​(T)≃λ42ckB​T​.
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  • Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 315 / 1 / b / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 315 / 1 / c / Solution

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 Articles by others on the same topic (2)

Rayleigh–Jeans law by Wikipedia Bot  1
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The Rayleigh–Jeans law is a formula that describes the spectral distribution of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature. It was developed by Lord Rayleigh and Sir James Jeans in the early 20th century.
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Rayleigh-Jeans law by Ciro Santilli  40 Updated 2025-07-16
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Derived from classical first principles, matches Planck's law for low frequencies, but diverges at higher frequencies.
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