reflection of light (book)

qtr 1, periodicals

reflection

bouncing back of light in to the same medium it has been traveling after striking a surface

incident ray

ray that strikes the surface

reflected ray

ray that rebounds from the surface

normal

line perpendicular to the surface at the point of incidence

angle of incidence

angle between the incident ray & the normal

angle of reflection

angle between the reflected ray & the normal

regular

type of reflection when a group of parallel rays strikes a smooth flat surface

diffuse

type of reflection when reflected rays are not parallel/scattered in different directions, more common than regular reflection

specular reflection

important principle in a reflecting telescope

law of reflection

angle of incidence = angle of reflection