Everything about Plane Wave totally explained
In the
physics of
wave propagation (especially
electromagnetic waves), a
plane wave (also spelled
planewave) is a constant-frequency wave whose
wavefronts (surfaces of constant
phase) are infinite parallel planes of constant
amplitude normal to the
phase velocity vector.
By extension, the term is also used to describe waves that are approximately plane waves in a localized region of space. For example, a localized source such as an
antenna produces a field that's approximately a plane wave in its
far-field region. Equivalently, the "rays" in the limit where
ray optics is valid (for example for propagation in a homogeneous medium over lengthscales much longer than the wavelength) correspond locally to approximate plane waves.
Mathematically, a plane wave is a solution to the
wave equation of the following form:
» multiplied by some amplitude function
. (This is a special case of a
separable partial differential equation.)
(The term is used in the same way for
telecommunication, for example in
Federal Standard 1037C and
MIL-STD-188.)
Further Information
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