Educational Wave Apparatus

For reflection, refraction, and color mixing experiments. The light box consists of a light source 12 V, 24 W lamp, producing convergent, divergent or parallel beam. On one end, an adjustable cylindrical convex lens (for parallel beam)

On the other end, a triple aperture system for color mixing experiments (lateral aperture are provided with adjustable hinged mirror). All apertures in the box are provided with vertical channels to hold slit plates and color filters. The optical set includes Acrylic Blocks, set of three mirrors, 2 slit black plates, one with three narrow slits at one end and one narrow slit at the other end. Another black plate with four narrow slits at one end, one wide slit at the other end & set of seven mounted color.

For expl oring the concepts of mechanics involving linear motion on a near frictionless surface, such as acceleration, collisions (elastic / inelastic), expl osions, conservation of momentum and simple harmonic motion etc. Air track, the principal component of the apparatus, comprises of specially designed, rugged, anodized, aluminium alloy extrusion providing a straight working length of 2m, is mounted on four cast metal feet with leveling screws, two on each side positioned along the length. Two rows of fine holes provided on each side all along the length of the track through which jets of the air emanate to form air cushion on which the vehicles float under virtually frictionless conditions. One end of the track has an air inlet tube connection for compressed air supply. The track also has a 0-200cm scale graduated in millimeters for measuring distances and recording positions. The kit includes various gliders, which float to and fro on the air cushion, together with a large number of attachments to permit a comprehensive range of experiments. The complete apparatus including Air Track and attachments (accessories as per Cat No. 5238) are packed in kit form.

Linear Air Track is supplied complete with following accessories:

2 large vehicles (mass 400g, length 215mm)

1 small vehicle (mass 200g, length 100mm)

2 magnetic buffers (25mm diameter)

2 Plasticine holders (20mm diameter) with central hole

4 catapults (45mm wide) with slot for elastic band

3 steel buffers with central hole

4 elastic cords (220mm long) with plastic rings

1 reel of nylon thread

2 white plastic rods (4mm diameter 150mm long) for stroboscope photography

24 needles for use with steel buffer

20 white plain cards for interrupting light beams

1 reel rubber stand

1 pack of Plasticine

20 elastic bands

Tellurium of high-quality conceived to show on large scales the relative movements of the Sun, Earth and the Moon, and to explain a certain number of phenomena, such as the day and the night, the variation in the length and the orientation of the shades, seasons of the year, lunar phases, as well as the solar and lunar eclipses. Complete model mounted on a wooden box with on/off switch provided and operates on 220V motor.

Demonstrates the linear expansion of solids and allows comparison of expansion rods of different materials. Comprises cast metal end supports mounted at each end of a horizontal metal reservoir, open at the top, that can take any liquid fuel such as Alcohol. One of the end supports has a scale with pointer needle on the outside to indicate the expansion in the rod. Expansion rods supports in the holes near top of both the end supports and can be clamped at the end opposite to that of scale pointer. Burning of fuel in the reservoir causes rod at the top to expand, which in turn pushes the pointer needle showing deflection in the scale. Includes three expansion rods, 1 each of brass, Copper and aluminium.