what are applications of plane polarized light????????

Question

I know about polariods in camera but dont understand what it is ?? I know ..in windows of cars ...do you know any use of plane polarised light?

Answer 1

Polarized light means that the electric field (which is normal to the direction of propagation) is in the same direction everywhere. One cool ap is to take two and rotate them relative to each other. It acts like a variable neutral density filter to control exposure.

Answer 2

Applications Of Polarized Light

Answer 3

LASERS Light Amplified Stimulation Emission Radiation.
Lasers / diodes emit polarized light. each of the same wavelength and thus travels in straight lines, only their application is limited to lab use and small applications. That due to atmospherics, both the crap in the air causing the beams to bend and to dissipate heat along its path. Red Lasers are common, the new blue lasers are a shorter wavelength and that makes for more data to be squashed into these new Cd-Roms, something like 40Gigz now. In eye surgery the use of laser diodes can pinpoint a single vein without damaging the surrounding arias, though this application uses pulsed lasers to control the exposure and heat transfer problems. Polarized lenses prevent or limit light to make contact with the eye by polarizing and only allowing vision of those filtered light-waves, ouch! Though light don't travel in waves, it once where believed so.

Answer 4

Light is often polarised to reduce glare. For example, A fisherman would experience reflected glare from the water surface. If he wears a pair of sunglasses, he will reduce the total amount of light (including glare & ambient light) reaching his eye. But if he wears a pair of polarisers, he will reduce the glare directly!

Answer 5

Something in the back of my head says that polarised light can be used in microscopy