Polariser

A polariser is a device which absorbs all the components of an electro-magnetic field in one direction leaving only the components perpendicular to that of polariser axis.

A polariser works by having conducting filaments aligned in one direction and with a spacing similar to the wavelength of the radiation to be polarised. The electrons of which absorb the electric field of the wave in the axis of their alignment. Components of radiation perpendicular to the alignment of the conductors pass through un-absorbed.

Polariser

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Subjects: Physics