reflection

qtr 1, smt 2

reflection

bouncing back of light into the same medium it has been travelling after striking a surface

incident ray

ray that strikes the surface

reflected ray

ray that rebounds from the surface

normal

line that is perpendicular to the surface at the point of incidence

angle of incidence

angle between the incident ray & normal

angle of reflection

angle between the reflected ray & normal

smooth

types of surfaces that reflect regular reflection

rough

types of surfaces that reflect diffuse relfection

regular & diffuse

2 types of reflection

angle of incidence = angle of reflection

law of reflection

diffuse reflection

more common than regular reflection

specular reflection

important principle in reflecting telescope

mirror

any surface that is smooth enough to produce regular reflection of light

plane and spherical

2 types of mirrors

plane mirror

flat mirror, can make rooms look bigger

concave and convex

2 types of spherical mirror

real and virtual

2 types of images

real images

formed by actual intersection of reflected rays

in front

location of real image related to mirror

upside down

orientation of real images

behind

location of virtual images related to mirror

upright

orientation of virtual images

magnification

size of image relative to size of object

ray diagram

used to locate & characterize image formed by mirror

luminous

object creates its own light

illuminated

object gets light from another