-90 degree deviation (Modern Periscopes)
-180 degree deviation (Prism Binoculars)
-Reversing Prism
-Critical Angle (rotate disk until T.I.R. occurs, then draw in normal)
-Show how a glass tube seems to disappear when immursed in a liquid of the same index of refraction as the glass
-pyrex and vegetable oil work well.
-For best effect, put your thumb over the end of the tube first. Then release when you want the tube to "disappear".
-Two parallel lasers can be aimed toward a converging of a diverging lens.
-Turn on the lasers and use chalk dust to make the beams visible.
-The focal lengths are marked on the lenses.
-Place a clear plastic cup filled with water on the overhead projector.
-A circular rainbow will be visible on the ceiling.
-The light entering a corner cube reflector is always reflected back parallel to its line of entry.
-If students are permitted to look in the mirror, they will always be able to see themselves, upside down.
-Two parallel lasers can be aimed toward a converging or a diverging mirror.
-Turn on the lasers and use chalk dust to make the beams visible.
-The focal lengths are about 12".
-When using blackboard optics, put a few drops of glycerin on the suction cups, before fixing to the board.
-The Law of Reflection :<a=<b where <a denotes the incoming angle of the light ray (incoming angle made with the normal of the surface) and <b denotes the reflected angle of the light ray (reflected angle made with the normal of the surface).
-Make shadow puppets on the wall.
-Concave Mirrors give real images
-Convex Mirrors give virtual images
-Plano-Convex Lens has its focal length on the opposite side of where the object is placed relative to the lens.
-Plano-Concave Lens has its focal length on the same side of where the object is placed relative to the lens.
-Simple Refraction:
-Less dense --> More Dense
-More dense --> Less Dense
-Parallel Displacement
- v=(dsin(a-b))/(sinb)
-We have a wide selection of lenses, ranging in size, and power.