Question

Write any four uses of polarization.

Answer 1

Hint: To know the uses, first you have to know what polarization is.It helps to differentiate waves, in making movies and glasses. Three types of polarization are found based on the waves.

Complete step-by-step solution:
To answer this question, first, we need to know about polarization. Polarization is the attribute of wave oscillations having a definite direction relative to the wave’s propagation direction. It is a phenomenon caused by electromagnetic radiation, due to the wave nature. Sunlight passes via the vacuum to touch Earth, an example of a wave in electromagnetic. Such waves are called electromagnetic waves because, when an electrical field interacts with a magnetic field, they form.
The four uses of polarization are:
Polarisation is used to differentiate between longitudinal waves and transverse waves.
In sunglasses, polarization is used to reduce glare.
Three-dimensional films are produced and displayed using polarisation.
Polarization is used in infrared spectroscopy.

Additional information:
Three polarization types are present depending on the motion of the transverse and longitudinal wave and they are linear polarization, circular polarization, and elliptical polarization. In transverse waves, particle movement in the wave is perpendicular to the wave’s direction of motion. In a longitudinal wave, the medium particles move in the direction of wave motion. There are few methods that are used in the polarization of light- polarization by transmission, polarization by reflection, polarization by scattering, and polarization by refraction.

Note: Polarization is also used in plastic industries for conducting stress analysis tests. It is also used in chemistry such as the chirality of organic compounds is screened using techniques of polarization.