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Planck's radiation law |
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Planck's radiation law A law of physics which gives the spectral energy distribution of the heat radiation emitted from a so-called blackbody at any temperature. Discovered by Max Planck, this law laid the foundation for the advent of the quantum theory because it was the first physical law to postulate that electromagnetic energy exists in discrete bundles, or quanta. See Heat radiation, Quantum mechanics How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| They apparently contravene the century-old Planck's radiation law, one of the pillars of scientific understanding of heat and radiation. Until recently, the physical foundation for spectral radiance and irradiance standards was the predictable spectral output of blackbody sources that obeyed Planck's radiation law (49, 50). |
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