Reflection Applets Plane Mirror Image Applets Double Mirror Images

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Presentation transcript:

Reflection Applets Plane Mirror Image Applets Double Mirror Images Hinged Mirror Applet Rainbow Applets

Law of Reflection Curved Mirrors Angle of Incidence is equal to the angle of reflection

Converging Mirror A series of flat mirrors can be arranged to reflect parallel light through a single point. Increasing the number of flat mirrors causes the shape to more closely approximate a parabola and causes the reflected light to converge in a smaller area.

Parabolic vs Spherical Close to the axis of the mirror, the parabola and the circle are almost the same shape. Farther from axis the parabola flattens out. It is easier and less expensive to make spherical mirrors.

Types of Curved Mirrors A concave mirror is silvered on the inside of the sphere. A concave mirror is also called a converging mirror because it converges parallel light. A convex mirror is silvered on the outside of the bowl. A convex mirror is also called a diverging mirror because it diverges parallel light.

Concave Mirror Terms

Three Useful Rays Ray parallel to the axis reflects through the focus. Ray through the focus reflects parallel to the axis. Ray through the center of curvature reflects back on itself.