Plane wave

plane wavesplane-waveplaneplane electromagnetic wavecomplex sinusoidsplane wave sourceplane-wavesplanewavethese two images
In physics, a plane wave is a special case of wave or field: a physical quantity whose value, at any moment, is constant over any plane that is perpendicular to a fixed direction in space.wikipedia
172 Related Articles

Wave

travelling wavewavestraveling wave
In physics, a plane wave is a special case of wave or field: a physical quantity whose value, at any moment, is constant over any plane that is perpendicular to a fixed direction in space.
A plane wave seems to travel in a definite direction, and has constant value over any plane perpendicular to that direction.

Sinusoidal plane wave

sinusoidal
The term is also used, even more specifically, to mean a "monochromatic" or sinusoidal plane wave: a travelling plane wave whose profile G(u)is a sinusoidal function.
In physics, sinusoidal (or monochromatic) plane wave is a special case of plane wave: a field whose value varies as a sinusoidal function of time and of the distance from some fixed plane.

Traveling plane wave

Often the term "plane wave" refers specifically to a traveling plane wave, whose evolution in time can be described as simple translation of the field at a constant wave speed c along the direction perpendicular to the wavefronts.
In mathematics and physics, a traveling plane wave is a special case of plane wave, namely a field whose evolution in time can be described as simple translation of its values at a constant wave speed c, along a fixed direction of propagation \vec n.

Sine wave

sinusoidalsinusoidsine
The term is also used, even more specifically, to mean a "monochromatic" or sinusoidal plane wave: a travelling plane wave whose profile G(u)is a sinusoidal function.
In two or three spatial dimensions, the same equation describes a travelling plane wave if position x and wavenumber k are interpreted as vectors, and their product as a dot product.

Wavefront

wave frontwavefrontssurfaces of constant phase
For each displacement d, the moving plane perpendicular to \vec n at distance d + c t from the origin is called a "wavefront".
The simplest form of a wavefront is the plane wave, where the rays are parallel to one another.

Plane wave expansion

convertsum of cylindrical waves
In physics, the plane wave expansion expresses a plane wave as a linear combination of spherical waves,

Wave equation

spherical waveD'Alembert equationwave
A solution of this equation can be quite complicated, but it can be analyzed as a linear combination of simple solutions that are sinusoidal plane waves with various directions of propagation and wavelengths but all with the same propagation speed c.

Physics

physicistphysicalphysicists
In physics, a plane wave is a special case of wave or field: a physical quantity whose value, at any moment, is constant over any plane that is perpendicular to a fixed direction in space.

Field (physics)

fieldfieldsfield theory
In physics, a plane wave is a special case of wave or field: a physical quantity whose value, at any moment, is constant over any plane that is perpendicular to a fixed direction in space.

Unit vector

unit vectorsnormalizedunit
:where \vec n is a unit-length vector, and G(d,t) is a function that gives the field's value as from only two real parameters: the time t, and the displacement of the point \vec x along the direction \vec n. The latter is constant over each plane perpendicular to \vec n.

Real number

realrealsreal-valued
:where \vec n is a unit-length vector, and G(d,t) is a function that gives the field's value as from only two real parameters: the time t, and the displacement of the point \vec x along the direction \vec n. The latter is constant over each plane perpendicular to \vec n.

Longitudinal wave

longitudinalcompressional wavecompression wave
When the values of F are vectors, the wave is said to be a longitudinal wave if the vectors are always collinear with the vector \vec n, and a transverse wave if they are always orthogonal (perpendicular) to it.

Transverse wave

transversetransverse wavesshear waves
When the values of F are vectors, the wave is said to be a longitudinal wave if the vectors are always collinear with the vector \vec n, and a transverse wave if they are always orthogonal (perpendicular) to it.

Amplitude

peak-to-peakintensityvolume
:The parameter A, which may be a scalar or a vector, is called the amplitude of the wave; the scalar coefficient f is its "spatial frequency"; and the scalar \varphi is its "phase".

Light

visible lightvisiblelight source
That is the case, for example, of the light waves from a distant star that arrive at a telescope.

Standing wave

standing wavesstationary wavestanding
A standing wave is a field whose value can be expressed as the product of two functions, one depending only on position, the other only on time.

Linear map

linear operatorlinear transformationlinear
Any local operator, linear or not, applied to a plane wave yields a plane wave.

Divergence

divergence operatorconverge or divergeConvergence
The divergence of a vector-valued plane wave depends only on the projection of the vector G(d,t) in the direction \vec n.

Parabolic loudspeaker

Holophonesholophoneparabolic dishes
A parabolic loudspeaker is a loudspeaker which seeks to focus its sound in coherent plane waves either by reflecting sound output from a speaker driver to a parabolic reflector aimed at the target audience, or by arraying drivers on a parabolic surface.

Zenneck wave

Zenneck surface wave
The Zenneck wave, Zenneck surface wave or Sommerfeld-Zenneck surface wave is a longitudinal, inhomogeneous or non-uniform electromagnetic plane wave incident at the complex Brewster's angle onto a planar or spherical boundary interface between two homogeneous media having different dielectric constants.

Photon polarization

polarization transversalitylight polarization
Photon polarization is the quantum mechanical description of the classical polarized sinusoidal plane electromagnetic wave.

Parabolic reflector

parabolic mirrorparabolicparabolic dish
The parabolic reflector transforms an incoming plane wave traveling along the axis into a spherical wave converging toward the focus.

Dirac spinor

spinorfour-spinorscomplex four-component spinor
In quantum field theory, the Dirac spinor is the bispinor in the plane-wave solution