E_QUEST1 When you use a mirror to reflect a light ray to another surface, how does the angle you hold the mirror affect where the light ray hits?
E_QUEST2 Why do shadows appear longer late in the day?
E_QUEST3 Why does very smooth sheet of white paper sometimes seem to glare in your eyes?
D_TEXTBLOCK_TEXT The angle of incidence is the angle between a ray of light striking a reflective surface and an imaginary line drawn perpendicular to the surface at that point (sometimes called the "normal"). The angle of incidence equals the <HL Topic=Areflection.tpc>ANGLE OF REFLECTION</HL>.
O_TEXTBLOCK_TEXT When the ray of light strikes the <HL Topic=Mirror.tpc>MIRROR</HL>, it strikes the <HL Topic=Mirror.tpc>MIRROR</HL> at a particular angle. When the <HL Topic=Mirror.tpc>MIRROR</HL> is moved, the angle changes and so does the angle of incidence (the angle between the ray of light and an imaginary line drawn perpendicular to the surface at the point where the ray of light strikes the surface). Notice that the angle of incidence is always equal to the <HL Topic=Areflection.tpc>ANGLE OF REFLECTION</HL>.