Waves & Sound

This dual-purpose tank is a versatile apparatus allowing all types of waves and wave motion. With an illuminator lamp and important accessories included it forms a complete ready-to-use unit. The unique design and size allow 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 the 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.

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.

4 precision aluminium alloy tuning forks to sound the major chords (C-256, E-320, G-384, and C-512). Frequency and note are stamped on each fork.

Six precision aluminium alloy tuning forks. Set consists of 125 Hz; 250 Hz; 500 Hz; 1,000 Hz; 2,000 Hz; and 4,000 Hz.

Threaded shanks, mounted on a common resonance box and having frequencies of C1 (256), E (320), G (384) and C2 (512) Hz. Size of box 285 x 115 x 63 mm approx., complete with hammer.

Set of two resonance boxes with extra heavy aluminium forks having double the duration of audible vibration than the ordinary forks. One fork is weighted and can be adjusted over range of about 30 Hz. forks are of different lengths 19.4 cm and 17.5 cm approx.