Fresnel at oblique incidence; Brewster zero; s = p at normal

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Reference: Fresnel at oblique incidence; Brewster zero; s = p at normal
Kind: analytic: a closed form, limit or conservation law: independent of any code
Calculated: R, T
Agreement: 1e-13 abs

A single interface, air to glass (n = 1.5) at 600 nm: the Fresnel equations Brewster's angle, where R_p vanishes, is arctan(1.5) = 56.3°; the two curves coincide to machine precision at every angle.

R_s, PyStratify R_p, PyStratify R_s, Fresnel closed form R_p, Fresnel closed form

Hover to read values.

largest |R − R_Fresnel| over both polarizations: 1.22×10⁻¹⁴
PyStratify the lines, the reference the circles

Run it yourself: planar_checks.py · figures.py · PLANAR_CHECKS.md on GitHub, PyStratify 97e52a9