Reflection and Refraction of Plane Waves

From equations (1.20) and (1.21), the electric and magnetic fields present in the system are 

The boundary conditions are applied at the interface defined by the condition z=0. On this plane, the boundary conditions must apply for all times and for all values of the in- 

Since kj resides in the (x,z) plane, so must kj and k2. Equating the x components, we have Snell s law  

Equations (1.74) to (1.77) are the Fresnel formulae. Examination of equation (1.77) reveals that light with p polarization will not be reflected from a plane interface (/ = 0) at a specific angle of incidence, t B. This is the Brewster angle and, for the case 

For typical organic materials and most glasses in contact with air, n2/nl 1.5 

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