polarization قطبش qotbeš (#) Fr.: polarisation Optics: A process or state in which the directions of the electric or magnetic fields
of an → electromagnetic radiation
change in a regular pattern. Light can be polarized by a
variety of ways, involving the following processes: reflection, transmission,
double refraction, and scattering. See also
→ unpolarized light;
→ linear polarization;
→ circular polarization;
→ elliptical polarization.
The study of the polarization of light from astronomical sources can yield
unique information in particular related to the properties of magnetic fields.
Electricity: A process or state in which the
→ dipole moments of → polar molecules in a
→ dielectric material get aligned under the action of
an external electric field. Actually thin layers of bound charges with opposite signs
appear on the surfaces of the dielectric.
Electricity: The accumulation of ions, produced during electrolysis,
on the electrodes of a cell, increasing the resistance of the cell.
See also: Verbal noun of → polarize. |
