• Thumbnail for Planck's law
    In physics, Planck's law (also Planck radiation law: 1305 ) describes the spectral density of electromagnetic radiation emitted by a black body in thermal...
    141 KB (18,058 words) - 22:17, 12 October 2024
  • Thumbnail for Rayleigh–Jeans law
    dependence in June 1900. Planck discovered the curve now known as Planck's law in October of that year and presented it in December. Planck's original intent was...
    11 KB (1,842 words) - 09:46, 3 November 2023
  • Thumbnail for Kirchhoff's law of thermal radiation
    mathematical identification of Kirchhoff's universal function, now known as Planck's law. Planck also noted that the perfect black bodies of Kirchhoff do not occur...
    27 KB (3,710 words) - 21:06, 7 July 2024
  • Thumbnail for Wien's displacement law
    detailed in the next section. Planck's law for the spectrum of black-body radiation predicts the Wien displacement law and may be used to numerically...
    25 KB (3,404 words) - 03:32, 26 August 2024
  • Thumbnail for Wien approximation
    the Wien approximation gets ever closer to Planck's law as the frequency increases. The Rayleigh–Jeans law developed by Lord Rayleigh may be used to accurately...
    7 KB (867 words) - 07:57, 13 October 2024
  • The Planck constant, or Planck's constant, denoted by h {\textstyle h} , is a fundamental physical constant of foundational importance in quantum mechanics:...
    70 KB (6,389 words) - 18:39, 29 October 2024
  • Thumbnail for Black-body radiation
    spectrum that depends only on the body's temperature, called the Planck spectrum or Planck's law. The spectrum is peaked at a characteristic frequency that...
    68 KB (8,651 words) - 17:40, 18 October 2024
  • The Planck relation (referred to as Planck's energy–frequency relation, the Planck–Einstein relation, Planck equation, and Planck formula, though the...
    6 KB (801 words) - 22:12, 4 October 2024
  • Thumbnail for Black body
    Black body (redirect from Black-body law)
    electromagnetic black-body radiation. The radiation is emitted according to Planck's law, meaning that it has a spectrum that is determined by the temperature...
    46 KB (5,110 words) - 08:03, 29 October 2024
  • Thumbnail for Stefan–Boltzmann law
    Boltzmann constant and the Planck constant, is a direct consequence of Planck's law as formulated in 1900. The Stefan–Boltzmann constant, σ, is derived from...
    38 KB (5,480 words) - 13:33, 25 September 2024