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  2. Huygens–Fresnel principle - Wikipedia

    en.wikipedia.org/wiki/Huygens–Fresnel_principle

    Finally only in this case the superposition principle fully apply, i.e. the wave function in a point P can be expanded as a superposition of waves on a border surface enclosing P. Wave functions can be interpreted in the usual quantum mechanical sense as probability densities where the formalism of Green's functions and propagators apply. What ...

  3. Carrier-sense multiple access - Wikipedia

    en.wikipedia.org/wiki/Carrier-sense_multiple_access

    P-persistent This approach lies between the 1-persistent and non-persistent CSMA access modes. [1] When the transmitting node is ready to transmit data, it senses the transmission medium for idle or busy. If idle, then it transmits immediately. If busy, then it senses the transmission medium continuously until it becomes idle, then transmits ...

  4. Pilot wave theory - Wikipedia

    en.wikipedia.org/wiki/Pilot_wave_theory

    In theoretical physics, the pilot wave theory, also known as Bohmian mechanics, was the first known example of a hidden-variable theory, presented by Louis de Broglie in 1927. Its more modern version, the de Broglie–Bohm theory , interprets quantum mechanics as a deterministic theory, and avoids issues such as wave function collapse , and the ...

  5. Relativistic wave equations - Wikipedia

    en.wikipedia.org/wiki/Relativistic_wave_equations

    In physics, specifically relativistic quantum mechanics (RQM) and its applications to particle physics, relativistic wave equations predict the behavior of particles at high energies and velocities comparable to the speed of light. In the context of quantum field theory (QFT), the equations determine the dynamics of quantum fields.

  6. Electromagnetic electron wave - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_electron_wave

    The R wave and the L wave are right-hand and left-hand circularly polarized, respectively. The R wave has a cut-off at ω R (hence the designation of this frequency) and a resonance at ω c. The L wave has a cut-off at ω L and no resonance. R waves at frequencies below ω c /2 are also known as whistler modes. [6]

  7. Plasma oscillation - Wikipedia

    en.wikipedia.org/wiki/Plasma_oscillation

    Plasma oscillations, also known as Langmuir waves (after Irving Langmuir), are rapid oscillations of the electron density in conducting media such as plasmas or metals in the ultraviolet region. The oscillations can be described as an instability in the dielectric function of a free electron gas. The frequency depends only weakly on the ...

  8. Periodic travelling wave - Wikipedia

    en.wikipedia.org/wiki/Periodic_travelling_wave

    Periodic travelling waves play a fundamental role in many mathematical equations, including self-oscillatory systems, [1] [2] excitable systems [3] and reaction–diffusion–advection systems. [4] Equations of these types are widely used as mathematical models of biology, chemistry and physics, and many examples in phenomena resembling ...

  9. Free particle - Wikipedia

    en.wikipedia.org/wiki/Free_particle

    The solution for a particle with momentum p or wave vector k, at angular frequency ω or energy E, is given by a complex plane wave: ψ ( r , t ) = A e i ( k ⋅ r − ω t ) = A e i ( pr − E t ) / ℏ {\displaystyle \psi (\mathbf {r} ,t)=Ae^{i(\mathbf {k} \cdot \mathbf {r} -\omega t)}=Ae^{i(\mathbf {p} \cdot \mathbf {r} -Et)/\hbar }}