Angles/Rays
Angle of incidence
angle at which light enters the mirror
What it is
light passes through a medium and bends (angle of refraction)
reflection on a smooth surface. Law of Reflection applies
specular reflection
concave
converging-positive f-cosmetic mirrors, dental mirrors
converging
light rays bend and meet
Angle of reflection
angle at which light leaves a mirror
when the speed of light is slower in the medium
reflection on rough surfaces. No law of reflection
diffuse reflection
convex
diverging, negative f, sideview mirror, security mirror.
diverging
light rays bend and move away from each other
Incident ray
ray of light that enters a mirror
Magnification
M=-di/do=hi/ho
difference in SALT for lenses
real is o and i on different sides of lens.
virtual is o and i on same side of lens.
Reflected ray
ray of light that leaves a mirror
Index of Refraction
n=c/v
Focal length
1/f=1/di+1/do
Convex- (-f)
equations
same as for mirrors
what c is always equal to (speed of light)
3.0 times 108 m/s