" /> Brewster angle - CISMeF





Preferred Label : Brewster angle;

Detailed label : Brewster angle, θB;

IUPAC definition : When an unpolarized planar electromagnetic wavefront impinges on a flat dielectric surface, there is a unique angle (θB), commonly referred to as Brewster angle, at which the reflected waves are all polarized into a single plane.;

Scope note : for a wave incident from air on water(n1.333), glass(n1.515), and diamond(n2.417), the brewster angles are53degrees,57degrees,and 67.5degrees,respectively.; for a randomly polarized beam incident at brewster angle, the electric fields of the reflected and refracted waves are perpendicular to each other; expression for brewster angle: ¿b n2n1 ¿2¿1 1/2 wheren2 andn1 are the refractive indices of the receiving surface and the initial medium, respectively, and ¿2 and ¿1 are the relative static permittivities (formerly called dielectric constants).;

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When an unpolarized planar electromagnetic wavefront impinges on a flat dielectric surface, there is a unique angle (θB), commonly referred to as Brewster angle, at which the reflected waves are all polarized into a single plane.

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28/07/2025


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