# Fresnel Reflectance Of S-polarized Light Calculator

The Fresnel equations are used to describe the behavior of light when moving between media of differing refractive indices. When the electric field is perpendicular to the plane during the incident ray polarization, it is termed as perpendicular (s)-polarization. Use this Fresnel Reflectance Of S-polarized Light Calculator to find the Reflectance for S-Polarized Light (Rp) based on the refractive index, angle of the incidence and angle of the transmission.

The Fresnel equations are used to describe the behavior of light when moving between media of differing refractive indices. When the electric field is perpendicular to the plane during the incident ray polarization, it is termed as perpendicular (s)-polarization. Use this Fresnel Reflectance Of S-polarized Light Calculator to find the Reflectance for S-Polarized Light (Rp) based on the refractive index, angle of the incidence and angle of the transmission.

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#### Formula:

R_{p} = ((n1 x cosθ_{i} - n2 x cosθ_{t}) / (n1 x cosθ_{i} + n2 x cosθ_{t}))^{2}
**Where,**
R_{p} = Reflectance for S-Polarized Light
n1 = Refractive Index Of Medium1
n2 = Refractive Index Of Medium2
θ_{i} = Angle Of Incidence
θ_{t} = Angle Of Transmission
### Example:

**
A light passes through medium 1 with a refractive index of 15 and passes through medium2 with refractive index of 12. The angle of incidence and the angle of transmission for the s-polarized light is 60° and 45°. Find Fresnel Reflectance of S-polarized Light. **

#### Solution:

R_{p} = ((15 x cos(60)) - (12 x cos(45)) / (15 x cos(60)) + (12 x cos(45)))^{2}

=(( (15 ×0.5)-(12 × 0.70710678))/( (15 ×0.5)+(12 × 0.70710678)))^{2}

= 0.0038°
The reflection of light that the equations predict is known as Fresnel reflection.