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1. Fresnel reflection (Reflectivity Rp)

R_p	The reflectance for p-polarized light (dimensionless)
n₁	The refractive index of the initial medium through which the light propagates (dimensionless)
n₂	The refractive index of the other medium (dimensionless)
θ_i	The angle of incidence (degree)

R_p

2. Fresnel reflection (Reflectivity Rs)

R_s	The reflectance for s-polarized ligh (dimensionless)
n₁	The refractive index of the initial medium through which the light propagates (dimensionless)
θ_i	The angle of incidence (degree)
n₂	The refractive index of the other medium (dimensionless)

R_s

fx​Solver is a solver for engineering and scientific equations.