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Optics
Optics

Brewster's Angle

tan⁡θB=n2n1\tan\theta_B = \frac{n_2}{n_1}

The angle of incidence at which reflected light is completely polarized.

Variables

\theta_B
Brewster's angle
°
n_1
Refractive index of medium 1
unitless
n_2
Refractive index of medium 2
unitless

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Common questions

What is the Brewster's Angle formula?

Brewster's Angle is written tanθ_B = n₂/n₁. The angle of incidence at which reflected light is completely polarized. It belongs to Optics, under Polarization.

What are the units in tanθ_B = n₂/n₁?

In SI units, \theta_B is brewster's angle, measured in °; n_1 is refractive index of medium 1 (dimensionless); n_2 is refractive index of medium 2 (dimensionless).