<Dl> <Dd> θ 1 + θ 2 = 90 ∘, (\ displaystyle \ theta _ (1) + \ theta _ (2) = 90 ^ (\ circ),) </Dd> </Dl> <Dd> θ 1 + θ 2 = 90 ∘, (\ displaystyle \ theta _ (1) + \ theta _ (2) = 90 ^ (\ circ),) </Dd> <P> where θ is the angle of reflection (or incidence) and θ is the angle of refraction . </P> <P> Using Snell's law, </P>

What is brewster's angle for an air-glass (n = 1.54) surface