• The Helmholtz reciprocity principle describes how a ray of light and its reverse ray encounter matched optical adventures, such as reflections, refractions...
    18 KB (2,610 words) - 20:16, 10 February 2025
  • the Helmholtz theorem: Helmholtz decomposition, also known as the fundamental theorem of vector calculus Helmholtz reciprocity in optics Helmholtz theorem...
    404 bytes (72 words) - 13:32, 30 December 2022
  • Thumbnail for Hermann von Helmholtz
    Hermann Ludwig Ferdinand von Helmholtz (/ˈhɛlmhoʊlts/; German: [ˈhɛʁman fɔn ˈhɛlmˌhɔlts]; 31 August 1821 – 8 September 1894; "von" since 1883) was a German...
    36 KB (3,510 words) - 22:16, 2 April 2025
  • characteristics Helmholtz reciprocity, linear propagation. Reciprocity law (law of reciprocity) in mathematics, including Quadratic reciprocity, a fundamental...
    5 KB (635 words) - 21:54, 20 January 2025
  • Thumbnail for Planck's law
    such a way as to absorb all the radiation that falls on it. By the Helmholtz reciprocity principle, radiation from the interior of such a body would pass...
    141 KB (18,064 words) - 16:26, 30 May 2025
  • Thumbnail for Reciprocity (electromagnetism)
    the Helmholtz reciprocity (or reversion) principle. When the wave propagates through a material acted upon by an applied magnetic field, reciprocity can...
    43 KB (6,440 words) - 12:34, 4 April 2025
  • Thumbnail for Black-body radiation
    which could be reflected and refracted, and which obeyed the Stokes-Helmholtz reciprocity principle. His research did not consider that properties of rays...
    69 KB (8,780 words) - 16:10, 23 May 2025
  • Thumbnail for Thermal equilibrium
    law of equality of radiative emissivity and absorptivity and the Helmholtz reciprocity principle are in play. If an initially isolated physical system...
    17 KB (2,334 words) - 12:33, 30 November 2024
  • Thumbnail for Bidirectional reflectance distribution function
    f_{\text{r}}(\omega _{\text{i}},\,\omega _{\text{r}})\geq 0} obeying Helmholtz reciprocity: f r ( ω i , ω r ) = f r ( ω r , ω i ) {\displaystyle f_{\text{r}}(\omega...
    24 KB (2,885 words) - 03:14, 15 May 2025
  • energy Helmholtz free entropy Kelvin–Helmholtz instability Helmholtz layer Helmholtz minimum dissipation theorem Helmholtz motion Helmholtz reciprocity Helmholtz...
    2 KB (123 words) - 13:34, 28 May 2023
  • Thumbnail for Transmission electron microscopy
    correct electron chromatic aberration. The optical reciprocity theorem, or principle of Helmholtz reciprocity, generally holds true for elastically scattered...
    118 KB (15,039 words) - 04:49, 18 May 2025
  • temperature and their radiative exchange complies with the Stokes-Helmholtz reciprocity principle. Prevost, P. (1791). "Mémoire sur l'equilibre du feu"...
    16 KB (2,138 words) - 12:20, 15 March 2025
  • component of two-way radiation that is heat transfer. Also, by the [Helmholtz reciprocity] principle, the target system radiates into the laser source system...
    11 KB (1,435 words) - 09:37, 7 May 2024
  • Dual photography is a photographic technique that uses Helmholtz reciprocity to capture the light field of all light paths from a structured illumination...
    869 bytes (80 words) - 14:35, 16 March 2025
  • Thumbnail for Kirchhoff's law of thermal radiation
    of reflection of radiation that does not. As such it obeys the Helmholtz reciprocity principle. The opaque body is considered to have a material interior...
    27 KB (3,724 words) - 04:30, 26 May 2025
  • {\displaystyle U} , Entropy S {\displaystyle S} , Enthalpy H {\displaystyle H} , Helmholtz free energy A {\displaystyle A} , and Gibbs free energy G {\displaystyle...
    19 KB (2,838 words) - 01:45, 25 February 2025
  • Thumbnail for Spectral radiance
    because of absorption and emission. Nevertheless, the Stokes-Helmholtz reversion-reciprocity principle applies, because absorption and emission are the...
    15 KB (2,007 words) - 23:09, 14 May 2024
  • treating the volume integral without discretising the volume is the dual-reciprocity method. The technique approximates part of the integrand using radial...
    18 KB (2,075 words) - 09:45, 15 April 2025
  • Helmholtz's theorems Helmholtz coil Helmholtz decomposition Helmholtz equation Helmholtz flow Helmholtz free energy Helmholtz reciprocity Helmholtz resonance...
    17 KB (1,815 words) - 15:35, 11 July 2022
  • Thumbnail for Giraffe
    appear to hum to each other. There is some evidence that giraffes use Helmholtz resonance to create infrasound. They also communicate with body language...
    125 KB (12,170 words) - 22:21, 23 May 2025
  • written in terms of Bessel and Hankel function solutions to the cylindrical Helmholtz equation. SMM method formulation, finally helps compute these coefficients...
    3 KB (310 words) - 13:52, 29 March 2023
  • matrix can be symmetric. In recent decades, the dual reciprocity method (DRM) and multiple reciprocity method (MRM) have been emerging as promising techniques...
    6 KB (763 words) - 06:49, 5 June 2024
  • Thumbnail for Onsager reciprocal relations
    including "quasi-thermodynamic" theories by Thomson and Helmholtz respectively. Onsager's reciprocity in the thermoelectric effect manifests itself in the...
    17 KB (2,579 words) - 12:01, 7 May 2025
  • simplifications in order to obtain a Helmholtz equation. The choice of principle to derive the equations of the CMT. Either the reciprocity theorem or the variational...
    6 KB (782 words) - 00:55, 22 January 2024
  • On the Detection of the Magnetic Heart Vector – An Application of the Reciprocity Theorem (doctoral thesis) and the book that he co-authored with Robert...
    26 KB (2,889 words) - 00:07, 28 May 2025
  • Thumbnail for Color space
    sensitive to a particular range of visible light. Hermann von Helmholtz developed the Young–Helmholtz theory further in 1850: that the three types of cone photoreceptors...
    23 KB (2,710 words) - 22:54, 22 April 2025
  • Thumbnail for Demagnetizing field
    the first magnet in the demagnetizing field Hd(2) of the second is The reciprocity theorem states that Formally, the solution of the equations for the potential...
    15 KB (1,377 words) - 01:50, 3 May 2025
  • Thumbnail for Color
    theory was later refined by James Clerk Maxwell and Hermann von Helmholtz. As Helmholtz puts it, "the principles of Newton's law of mixture were experimentally...
    59 KB (7,037 words) - 09:20, 28 May 2025
  • time-domain integral-equation technique that is formulated via the Lorentz reciprocity theorem. Since the CdH-MoM heavily relies on the Cagniard-deHoop method...
    37 KB (4,764 words) - 11:45, 27 February 2025
  • CHEN Wen, Method of fundamental solution and boundary knot method for helmholtz equations: a comparative study, Chinese Journal of Computational Mechanics...
    8 KB (1,175 words) - 02:11, 23 May 2022