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NEWTON’S RING APPARATUS SOUND Consisting of a flat glass plate and a slightly convex lens of 50 mm dia. are placed in a metal frame with three pressure adjusting screws to produce Newton’s Rings. more...
Diode Laser Diffraction Experiment of light can be observed when a laser beam passes through a diffraction slit. The intensity pattern can be determined using a pin photo detector with fine movement across the diffraction pattern. more...
A plastic disc 16cm dia. in wooden base, a brass nickel plated 100mm dia plate with ebonite handle & a small brass contact sphere. more...