Optics quiz 2
concave mirror
reflection is from the inner syrfsce of the spherical section, for example dentist mirrors, flashlights
convex mirror
reflection is from the outer surface of the spherical section
rules of refraction
the incident ray, the refracted ray, and normal exist on the same plane
The incident ray is in the first medium and the refracted ray is in the second medium. The normal is perpendicular to the line separating the two medium
bending
if the speed of light is slower in the second medium than the first, the light ray goes towards the normal, and if it is faster, it will bend away
partial reflection
some light is reflected off the surface of the second medium as light travels from one medium to another
Total internal reflection
light reflects completely off the inside wall of a denser medium, instead of passing into a less dense medium. This occurs when the angle of incidence is larger than the critical angle
critical angle
the angle of incidence that results in an angle of refraction of 90 degrees