Unpolarized

Definition

Unpolarized light consists of waves vibrating in multiple planes perpendicular to the direction of propagation. Common sources of unpolarized light include sunlight, incandescent bulbs, and fluorescent lights.

5 Must Know Facts For Your Next Test

1. Unpolarized light can be converted to polarized light using polarizing filters.
2. The intensity of unpolarized light is reduced by half when it passes through a perfect polarizer.
3. Unpolarized light is often represented as having electric field vectors pointing in random directions within the plane perpendicular to the direction of propagation.
4. When unpolarized light reflects off a surface at a specific angle (Brewster's angle), the reflected light becomes completely polarized parallel to the surface.
5. Most natural and artificial sources emit unpolarized light.

Related terms

Polarization:

The process or phenomenon in which waves, such as electromagnetic waves, are restricted to vibrate in particular planes.

Brewster's Angle:

The angle at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface without any reflection.

Polarizer: An optical filter that lets light waves of a specific polarization pass through and blocks waves of other polarizations.