Boundary
Incident
A0
Reflected
R=A0(n2-n1)/(n2+n1)
(normal incidence only)
Transmitted (refracted)
note change of angle
c1 = l1f
T=2A0¦ n1n2/(n2+n1)
(normal incidence only)
A02=R2+T2 (conservation of energy)
c2 = l2f
n1=c0/c1 c0=2.97x108 m/s
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