Learning goals We are learning the types of reflection. We are learning the laws of reflection. We are learning to draw images in plane mirrors.

terminology Ray Diagrams: show rays of light that an observer sees. Only a few representative rays are drawn Light Ray: line representing the direction and path that light is travelling

Reflection: light bouncing off a non-luminous object Regular/Specular: light reflects off a smooth surface Image is clear Ex. Smooth water

Diffuse Reflection: light reflects off a rough surface Difficult to predict where the light will reflect Image is blurred Ex. Rough water

Mirrors

Terminology of Reflection MIRROR

Terminology of Reflection NORMAL

Terminology of Reflection NORMAL Incident Ray

Terminology of Reflection NORMAL Incident Ray Angle of incident

Terminology of Reflection NORMAL Incident Ray Angle of incident Reflected Ray

Terminology of Reflection NORMAL Angle of reflection Incident Ray Angle of incident Reflected Ray

Laws of reflection 1. The angle of incidence equals the angle of reflection.

Laws of reflection 2. The incident ray, the reflected ray, and the normal all lie in the same plane.

Describing an image

Learning goals We are learning the types of reflection. We are learning the laws of reflection. We are learning to draw images in plane mirrors.

Please complete P481 #3,5 P486 #2,5