Flashcards in Optics Deck (10):
What is angle of refraction?
angle that transmitted ray makes withe perpendicular plane of if interface between two media
What does index of refraction tell us?
how much slower light travels through that medium than through empty space
What is index of refraction equal to?
speed of light in a vaccuum divided by speed of light in a medium
If n2 is greater than n1, which way will ray bend?
toward the middle of medium. N2 angle is smaller
If n2 is less than n1, which way will ray bend?
away from the middle of medium. N2 angle is greater
What is total internal reflection?
Case where incident ray energy will be reflected back to the original medium and there is no refracted ray
Under which case will total internal reflection occur?
the angle of incidence is greater than the critical angle. high index to low index
If angle of incidence is equal to critical angle
refracted beam skims the boundary
True or falseElectromagnetic waves travel at different speeds when traveling through a material medium like glass or water