Wave Machine, Powell’s
Consisting of 19 spheres, each mounted on a 70 mm (approx.) long rod, with a collar for attachment to a shaft. The spheres are mounted at 20° (approx.) intervals, equally spaced along the shaft. The shaft rotates in two pillars mounted on a base.
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Hollow wooden sounding box 1290 x 130 x 110 mm, with mm scale, has two fixed bridges 72 cm apart over which wires are stretched. To one wire is fitted a spring balance reading to 100N x 5N and its tension can be adjusted by a winged nut and measured. Another wire passes over a pulley and can be loaded as desired. A third wire, for comparison, can have its tension adjusted by a wrest-pin. With 3 movable bridges, wrest-pin key, spring balance, and set of four wires of different diameters, each 1.5 meter long, without masses.
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Transparent acrylic plastic ripple tank, supported in a sturdy plastic frame which has recesses to hold four legs with leveling feet. The tank edges are shaped to minimise undesired reflections. Tank has a drain hole closed by a rubber stopper. With two light alloy uprights to carry a horizontal rippler support rod which is adjustable for height. The ripple assembly, elastically suspended from the support rod, consists of a 4 – 6 V DC motor mounted on a wooden beam. The motor has an eccentric weight which causes the beam to oscillate. Two point sources are provided by two plastic spheres, each mounted on a right angle rod. A metal rod is fixed centrally into a socket in one short side of the frame to afford support to the illuminant. Overall size of the tank 580 x 500 x 80 mm, window area 370 x 280 mm, height of tank above bench level (with legs attached) approx. 375 mm. Complete with following accessories :-
- Two straight obstacles of aluminium alloy length 130 mm.
- One straight obstacle length 40 mm.
- One curved reflector radius 200 mm.
- One trapezoidal plastic plate for refraction.
- One wood hand wave roller.
- One water dropper.
- One pkt. rubber bands.
- One foam plastic sponge.
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Without power supply
PH36044 -
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Ripple Tank, Dual Purpose
This dual purpose tank is a versatile apparatus allowing all types of waves and wave motion. With illuminator lamp and important accessories included it forms a complete ready to use unit. The unique design and size allows it to be used on an overhead projector as well. Supplied in foam packing and consists of the following components :
- Ripple Tank 40 x 40 cm.
- Four push Fit Legs.
- Ripple motor with eccentric cam, mounted on PVC bar.
- Three supports for illuminator and the motor unit.
- Motor hanging clamps.
- Spring for motor support.
- Lamp Unit halogen 6 Volts.
- Concave Perspex Plate.
- Convex Perspex.
- Rectangular Perspex Plate.
- Curved Reflector.
- Barrier Large.
- Barrier Small.
- Plastic Roller Bar.
PH36068
