optics.gif (6954 bytes)

REFRACTION IN A WATER TANK






EQUIPMENT
    redball.gif (326 bytes) Plexiglas Water Tank With Bottom Mirror
    redball.gif (326 bytes) Small, 2 Mirror System
    redball.gif (326 bytes) Laser
    redball.gif (326 bytes) Smoke Paper/matches
    redball.gif (326 bytes) Dye




NARRATIVE
         Fill the water tank about 3/5 full of a water and add the dye. If desired, fill the upper part of the tank with smoke using the smoke paper. Mount the laser and small mirror system as shown. Rotate the small mirrors outside the tank to send the light beam from air to water or vice versa. Use the bottom mirror to demonstrate multiple internal reflections.