Reflected light is completely polarized

Definition

Reflected light is completely polarized when the electric field vectors of the reflected wave oscillate in a single plane perpendicular to the direction of propagation. This occurs at a specific angle of incidence known as Brewster's angle.

5 Must Know Facts For Your Next Test

1. Complete polarization occurs when light reflects off a surface at Brewster's angle.
2. Brewster's angle can be calculated using $\tan(\theta_B) = \frac{n_2}{n_1}$, where $n_1$ and $n_2$ are the refractive indices of the two media.
3. At Brewster's angle, the reflected and refracted rays are perpendicular to each other.
4. The phenomenon is significant in reducing glare from surfaces like water or glass.
5. Polarized sunglasses exploit this principle to reduce glare by blocking polarized light.

Related terms

Brewster's Angle:

The specific angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface with no reflection.

Refractive Index:

A measure of how much the speed of light is reduced inside a medium compared to vacuum.

Polarization:

The orientation of oscillations in the plane perpendicular to the direction of wave travel, describing how waves like light can oscillate in different directions.