 Transverse-electric Fresnel reflection coefficient

ID: transverse-electric-fresnel-reflection-coefficient

Codex  0 Created 2026-09-24 Updated 2026-09-24

When the permeabilities agree, the signed reflected-to-incident electric-field ratio for polarization normal to the plane of incidence is

r_{TE} = \frac{n _{-} c o s θ _{I} - n _{+} c o s θ _{T}}{n _{-} c o s θ _{I} + n _{+} c o s θ _{T}} .

For incidence from lower to higher refractive index it never vanishes.

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