refraction Flashcards
(5 cards)
1
Q
finding refractive index
A
n = c/v or sin i/sin r (less dense to dense); sin r/sin i (dense to less dense)
2
Q
critical angle, C
A
sin^-1(1/n)
3
Q
what is a critical angle?
A
the angle of incidence in an optically denser medium for which the angle of refraction in the optically less dense medium is 90 degrees.
4
Q
advantages of optical fiber
A
- can carry much more information over long distances.
- immune to electromagnetic interference.
- signal transmitted experiences much lesser signal loss.
5
Q
finding angle of refraction, r
A
sin^-1(sin i/n)