Amplitude The amplitude of a periodic variable is a measure of its change in a single period (such as time or spatial period). The amplitude of a non-periodic signal is its magnitude compared with a …

The phase velocity varies with frequency. 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 …

Sine waves of arbitrary phase and amplitude are called sinusoids and have the general form: [1] where: A {\displaystyle A} , amplitude, the peak deviation of the function from zero. t {\displaystyle t} , the …

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, …

Transmission coefficients can be calculated for either the amplitude or the intensity of the wave. Either is calculated by taking the ratio of the value after the surface or element to the value before. The …

Formula for phase of an oscillation or a periodic signal The phase of a simple harmonic oscillation or sinusoidal signal is the value of in the following functions: where , , and are constant parameters …

Smooth curve outlining the extremes of an oscillating signalEnvelope for a modulated sine wave. In physics and engineering, the envelope of an oscillating signal is a smooth curve outlining its …

Scattering in quantum mechanics begins with a physical model based on the Schrodinger wave equation for probability amplitude : where is the reduced mass of two scattering particles and E is the energy …