Reflection & Refraction
Reflection 
incident rays
reflected rays
refracted (transmitted) rays
point of incidence 
smooth surface 
specular refrection 
diffuse reflection 
opaque materials 
index of refraction
n=cvacuum /vmaterial  (33.1)
Laws of Reflection & Refraction

The in., refl., & refr. rays & the normal to the surface all lie in the same plane
Qr = Qa (law of reflection)  (33.2)
sin Qa /sin Qb = nb / na  (33.3)
na sin Qa =  nb sin Qb (law of refraction) (33.4)

lie 
dispersion 
λ = λ vacuum / n   (33.5)

Search Engine Optimization and Free Submission