waves 1.11 Flashcards
1
Q
wave goes from less dense to a denser medium
A
slows down (alargada)
refracts (bend) towards the normal
2
Q
wave goes from denser medium to a less dense
A
it will speed up (mas apretada)
refracts (bend) away from the normal
3
Q
law of refraction
A
4
Q
what happens to the phase in reflection?
A
5
Q
what happens to refracted waves?
A
6
Q
refractive index formula
A
7
Q
snell’s law
A
8
Q
snell’s law
A
9
Q
snell’s law for critical ray
A
must be less than 1
10
Q
critical ray θ>90°
A
total internal reflection
wave doesn’t exit the medium
