optics.gif (6954 bytes)

REFLECTIONS IN GROUND GLASS






EQUIPMENT
    redball.gif (326 bytes) Ground Glass Plate
    redball.gif (326 bytes) Lamp
    redball.gif (326 bytes) Insulated Stand
    redball.gif (326 bytes) Slit collimator for lamp




NARRATIVE
            This apparatus demonstrates the laws of reflection. Attach the slit collimator to the 6-Volt light source. Adjust the universal clamp to the same height as the base of the ground glass. This allows the beam to be moved through an arc while keeping the vertex of the angle at the intersection of the normal line (red) and the reflecting base.