Concepts of Polarization and Applications

Concepts of Polarization and Applications

Polarized light is a special type of light - one in which the electric field is confined to a single plane as compared to ordinary light, which has filled in all possible random orientations. That the state of polarization of the light coming from a particular object is decided by the nature of that object is the basis of a spectroscopic investigation of metal based on polarization. Research into how a desired polarisation can be achieved artificially laid to the discovery of a large number of phenomena that include optical activity (rotation of the plane of polarization) and photoelastic effect.

Polarizers are used in applications such as aeroplane Windows, automobile headlights wireless camera filters laser Windows anti glare sunglasses and stereoscopic (three dimensional) viewing. Polariscope which uses to polarizers in tandem is used in weaving of colourless objects. polarization studies have reviewed structures hanging from a galaxy (10^20 m) to A nucleus (10^14 m). That the saturn rings are made of ice crystals is burn out by polarization studies. Photoelasticity, a field of Paramount importance in Civil and Mechanical engineering is used to check and optimise the designs of structures by simulating and stress distribution in transparent plastic models of these structures under application of load. Photoelastic techniques enable engineers to see stress in computer components such as gas turbine blades windshields etc. An instrument called polarimeter is used in industries for measuring the concentration of optically active substances. For example saccharimeters are used in sugar industries for determination of sugar concentration and urine analysis tubes are used in pathology Laboratories for detecting the sugar concentration in urine specimens. One of the most remarkable applications of optically activity is in the liquid crystal display (LCD). LCD devices find wide applications in electronic and computer industry and in medical diagnostics.