enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Matter wave - Wikipedia

    en.wikipedia.org/wiki/Matter_wave

    The de Broglie wavelength is the wavelength, λ, associated with a particle with momentum p through the Planck constant, h: =. Wave-like behavior of matter has been experimentally demonstrated, first for electrons in 1927 and for other elementary particles, neutral atoms and molecules in the years since.

  3. Planck relation - Wikipedia

    en.wikipedia.org/wiki/Planck_relation

    The de Broglie relation, [10] [11] [12] also known as de Broglie's momentumwavelength relation, [4] generalizes the Planck relation to matter waves. Louis de Broglie argued that if particles had a wave nature, the relation E = hν would also apply to them, and postulated that particles would have a wavelength equal to λ = ⁠ h / p ⁠.

  4. Planck constant - Wikipedia

    en.wikipedia.org/wiki/Planck_constant

    In 1923, Louis de Broglie generalized the Planck–Einstein relation by postulating that the Planck constant represents the proportionality between the momentum and the quantum wavelength of not just the photon, but the quantum wavelength of any particle. This was confirmed by experiments soon afterward.

  5. Dispersion relation - Wikipedia

    en.wikipedia.org/wiki/Dispersion_relation

    The top electron has twice the momentum, while the bottom electron has half. Note that as the momentum increases, the phase velocity decreases down to c, whereas the group velocity increases up to c, until the wave packet and its phase maxima move together near the speed of light, whereas the wavelength continues to decrease without bound. Both ...

  6. Photon energy - Wikipedia

    en.wikipedia.org/wiki/Photon_energy

    This equation is known as the Planck relation. Additionally, using equation f = c/λ, = where E is the photon's energy; λ is the photon's wavelength; c is the speed of light in vacuum; h is the Planck constant; The photon energy at 1 Hz is equal to 6.626 070 15 × 10 −34 J, which is equal to 4.135 667 697 × 10 −15 eV.

  7. Wavenumber - Wikipedia

    en.wikipedia.org/wiki/Wavenumber

    A spectroscopic wavenumber can be converted into energy per photon E by Planck's relation: = ~. It can also be converted into wavelength of light: = ~, where n is the refractive index of the medium. Note that the wavelength of light changes as it passes through different media, however, the spectroscopic wavenumber (i.e., frequency) remains ...

  8. Wavelength - Wikipedia

    en.wikipedia.org/wiki/Wavelength

    Relationship between wavelength, angular wavelength, and other wave properties. A quantity related to the wavelength is the angular wavelength (also known as reduced wavelength), usually symbolized by ƛ ("lambda-bar" or barred lambda). It is equal to the ordinary wavelength reduced by a factor of 2π (ƛ = λ/2π), with SI units of meter per ...

  9. Energy–momentum relation - Wikipedia

    en.wikipedia.org/wiki/Energy–momentum_relation

    For photons, this is the relation, discovered in 19th century classical electromagnetism, between radiant momentum (causing radiation pressure) and radiant energy. If the body's speed v is much less than c , then ( 1 ) reduces to E = ⁠ 1 / 2 ⁠ m 0 v 2 + m 0 c 2 ; that is, the body's total energy is simply its classical kinetic energy ...