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11 questions from this quiz
Light travels at different speeds in different media
Incident ray, normal, refracted ray
sinisinr=n\frac{\sin i}{\sin r} = nsinrsini=n
Line perpendicular to surface
2.42
n=cvn = \frac{c}{v}n=vc
Willebrord Snellius in 1621
Toward the normal
n12=n2n1n_{12} = \frac{n_2}{n_1}n12=n1n2
1.0 (vacuum)
Light travels slower
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