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  2. Amplitude - Wikipedia

    en.wikipedia.org/wiki/Amplitude

    The units of the amplitude depend on the type of wave, but are always in the same units as the oscillating variable. A more general representation of the wave equation is more complex, but the role of amplitude remains analogous to this simple case. For waves on a string, or in a medium such as water, the amplitude is a displacement.

  3. Wave equation - Wikipedia

    en.wikipedia.org/wiki/Wave_equation

    The wave equation is a second-order linear partial differential equation for the description of waves or ... which prescribe the amplitude and phase of the wave.

  4. List of equations in wave theory - Wikipedia

    en.wikipedia.org/wiki/List_of_equations_in_wave...

    The phase velocity is the rate at which the phase of the wave propagates in space. The group velocity is the rate at which the wave envelope, i.e. the changes in amplitude, propagates. The wave envelope is the profile of the wave amplitudes; all transverse displacements are bound by the envelope profile.

  5. Phase (waves) - Wikipedia

    en.wikipedia.org/wiki/Phase_(waves)

    The phase of a simple harmonic oscillation or sinusoidal signal is the value of in the following functions: = ⁡ (+) = ⁡ (+) = ⁡ (+) where , , and are constant parameters called the amplitude, frequency, and phase of the sinusoid.

  6. Wave - Wikipedia

    en.wikipedia.org/wiki/Wave

    The Dirac equation is a relativistic wave equation detailing electromagnetic interactions. Dirac waves accounted for the fine details of the hydrogen spectrum in a completely rigorous way. The wave equation also implied the existence of a new form of matter, antimatter, previously unsuspected and unobserved and which was experimentally confirmed.

  7. Wave vector - Wikipedia

    en.wikipedia.org/wiki/Wave_vector

    A is the amplitude of the wave (the peak magnitude of the oscillation), φ is a phase offset , ω is the (temporal) angular frequency of the wave, describing how many radians it traverses per unit of time, and related to the period T by the equation ω = 2 π T , {\displaystyle \omega ={\tfrac {2\pi }{T}},}

  8. Wave function - Wikipedia

    en.wikipedia.org/wiki/Wave_function

    The Schrödinger equation determines how wave functions evolve over time, and a wave function behaves qualitatively like other waves, such as water waves or waves on a string, because the Schrödinger equation is mathematically a type of wave equation. This explains the name "wave function", and gives rise to wave–particle duality.

  9. Wave interference - Wikipedia

    en.wikipedia.org/wiki/Wave_interference

    The equation for the amplitude of a sinusoidal wave traveling to the right along the x-axis is (,) = ⁡ where is the peak amplitude, = / is the wavenumber and = is the angular frequency of the wave.