How else do you look pretty in the morning? 13.2 Flat Mirrors! How else do you look pretty in the morning?

Reflection The turning back of an electromagnetic wave at the surface of a substance

Reflection The texture of a surface affects how it reflects light Diffuse reflection- light that is reflected from a rough, textured surface Specular reflection- light reflected from smooth, shiny surfaces

ANGLES Angle of Incidence- the angle between a ray that strikes a surface and the normal to that surface at the point of contact θ Angle of Reflection- the angle formed by the line normal to a surface and the direction in which a reflected ray moves θ′ θ = θ ′

Flat (Plane) Mirrors Simplest of all mirrors Light rays bounce off objects in front of the mirror and reflect from the mirror’s surface. An object's reflection is said to be located behind the mirror (not literally) The object distance (do) is equal to the image distance (di)

VIRTUAL IMAGES The only thing flat mirrors form (albeit self-consciousness) Virtual image- an image formed by light ray that only appear to intersect Can never be displayed on a physical surface hi=ho Objects on the left appear on the right

RAY DIAGRAMS Ray diagrams- drawings that use simple geometry to locate an image formed by a mirror