# polarization

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## polarization

, polarisation
Physics the process or phenomenon in which the waves of light or other electromagnetic radiation are restricted to certain directions of vibration, usually specified in terms of the electric field vector

## polarization

(poh-lă-ri-zay -shŏn) The degree to which the orientation of the electric or magnetic vector in electromagnetic radiation is predictable over time. In a partially polarized wave, the vector thus shows a less random orientation in the plane perpendicular to the direction of wave motion than occurs in an unpolarized (normal) wave. Waves in which the electric vectors are entirely vertical or horizontal with respect to the direction of motion are described as vertically or horizontally plane (or linearly) polarized. In general, both polarizations are present with a relative phase difference and the wave is then elliptically polarized in the right-handed or left-handed sense accordingly as the resultant vector rotates clockwise or counterclockwise when viewed along the direction of motion of the wave; in the case where the resultant vector rotates and its magnitude remains constant, the wave is circularly polarized.

Polarization is a measure of the way in which light or other electromagnetic radiation from a celestial body is affected by factors such as scattering due to cosmic dust or strong stellar or interstellar magnetic fields, or reflection from a surface. Radio emissions from celestial sources are usually partially polarized, i.e. the waves can be considered to be composed of a completely unpolarized component plus a small polarized component. Synchrotron emission, however, may be strongly polarized. The general situation is described by the four Stokes parameters (I, Q, U, and V ), which are defined in such a manner that specifying their four values uniquely describes the state of polarization: I is a measure of the total power in the wave, Q and U define the degree of linear polarization, and V that of circular polarization. All four have dimensions of flux density. See also Faraday rotation; interstellar polarization.

## polarization

[‚pō·lə·rə′zā·shən]
(electricity)
The process of producing a relative displacement of positive and negative bound charges in a body by applying an electric field.
A vector quantity equal to the electric dipole moment per unit volume of a material. Also known as dielectric polarization; electric polarization.
A chemical change occurring in dry cells during use, increasing the internal resistance of the cell and shortening its useful life.
(physics)
Phenomenon exhibited by certain electromagnetic waves and other transverse waves in which the direction of the electric field or the displacement direction of the vibrations is constant or varies in some definite way. Also known as wave polarization.
The direction of the electric field or the displacement vector of a wave exhibiting polarization (first definition).
The process of bringing about polarization (first definition) in a transverse wave.
Property of a collection of particles with spin, in which the majority have spin components pointing in one direction, rather than at random.
References in periodicals archive ?
PVDF films were immersed in silicon oil and located between top and bottom electrodes, while the polarizing electric field was enhanced gradually with the increasing of temperature [14].
3M will supply its Vikuiti advanced polarizing film to Nitto Denko, which will manufacture the new products by combining the film with its own polarizer film for LCD panel makers.
3]He polarizing (analyzing) NSF: the transmission [T.
Polarcor W I D E band polarizing glass compliments Corning's other polarizer product offerings which include standard Polarcor(TM) and Polarcor(TM) UltraThin(TM) polarizing glass products," stated Tara Dowdell, Corning Polarcor product line manager.
This scheme allows the full power of the laser to be incident on OPC2, and can be constructed without the use of large area polarizing optics.
Corning's entire Photonic Materials product portfolio, including various specialty fibers, polarizing glass, GRIN lenses, lensed fiber, photosensitive glass and other specialty materials, will be on exhibit during the Optical Fiber Communication (OFC) conference February 24-26 in Los Angeles, California.
BMC's Vision-Ease group has invested significantly in polarizing technology and currently is enjoying license revenue on our patent portfolio from agreements with others within the industry," Hepper said.
Vision-Ease's suit states that Younger's polycarbonate polarizing lenses, including those marketed under the NuPolar(R) trademark, infringe on Vision-Ease's United States Patent No.
The major increase in capacity includes a new optical fab equipped with thin film coating and assembly capabilities, enabling technicians to fabricate 1mm polarizing beamsplitter cubes for optical networking and 4mm polarizing beamsplitter cubes for DVD players.
No polarizing prisms are used, and the input and output paths for the light are separated as in Aurora's NOVA design.
Originally founded in 1966 as an advanced polarized film technology venture involving Hoechst Corporation and Foster Grant, Polar Vision continues to provide polarizing films and high performance lens materials for the sports and ophthalmic eyewear industries.

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