basics about polarisation

Hi,

wil any one guide me about basics of polarisation & how does the winding direction in coil affect the polarisation?
Wat is meant by polarised chip? how does it function?

hi,

am sending u about the different polarizations with diagrams. we can say just polarization is nothin but orientation of E-field vector of waves.., with polarization we can say how a em wave will propagate...

if u r satisfied with my information then don't forget to press helped button...

all the best..
kishore...



Classification of Polarization

Light in the form of a plane wave in space is said to be linearly polarized. Light is a transverse electromagnetic wave, but natural light is generally unpolarized, all planes of propagation being equally probable. If light is composed of two plane waves of equal amplitude by differing in phase by 90°, then the light is said to be circularly polarized. If two plane waves of differing amplitude are related in phase by 90°, or if the relative phase is other than 90° then the light is said to be elliptically polarized.
Methods for achieving polarization
Index

Polarization concepts

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Linear Polarization

A plane electromagnetic wave is said to be linearly polarized. The transverse electric field wave is accompanied by a magnetic field wave as illustrated.
Compare with circular and elliptical polarization
Index

Polarization concepts

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Circular Polarization

Circularly polarized light consists of two perpendicular electromagnetic plane waves of equal amplitude and 90° difference in phase. The light illustrated is right- circularly polarized.

If light is composed of two plane waves of equal amplitude but differing in phase by 90°, then the light is said to be circularly polarized. If you could see the tip of the electric field vector, it would appear to be moving in a circle as it approached you. If while looking at the source, the electric vector of the light coming toward you appears to be rotating clockwise, the light is said to be right-circularly polarized. If counterclockwise, then left-circularly polarized light. The electric field vector makes one complete revolution as the light advances one wavelength toward you.

Circularly polarized light may be produced by passing linearly polarized light through a quarter-wave plate at an angle of 45° to the optic axis of the plate.
Compare with linear and elliptical polarization
Index

Polarization concepts

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Elliptical Polarization

Elliptically polarized light consists of two perpendicular waves of unequal amplitude which differ in phase by 90°. The illustration shows right- elliptically polarized light.
Compare with linear and circular polarization
Index

Polarization concepts

HyperPhysics***** Light and Vision R Nave
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