Description :-
Consisting of 19 spheres, each mounted on a 75 mm long rod with a collar for attachment to a shaft.
The spheres are mounted at 20° intervals, equally spaced along the shaft.
The shaft rotates in two pillars mounted on a base.
Description :-
Stroboscopic flashes are triggered by either the internal oscillator or by external pulses which may be connected to the two 4mm sockets mounted on the rear panel of the instrument. Example of the many applications of this unit are to be found in motion analysis multi exposures photography, examination of moving parts and measurement of rotational speed.
Specifications:-
Input Volts : 220V AC, 50 Hz
Flash Rate: 0- 9999 Flashes per minute.
Resolution : 1
Display: 7 Segment LED (4 nos.)
Description :-
Wooden baseboard 690 x 90 mm on four feet.
At one end are two 50 N spring balances with hooks and at the other are two wrest-pins.
With one large and two small bridges, wrest pin key and 2 steel wires, each 1 meter long, without masses.
Description :-
Demonstrating longitudinal and transverse waves.
A number of eccentric discs move a number of metal rods.
Transverse waves are obtained by straight rods and longitudinal waves by bent rods.
Description :-
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 minimize 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 :-
1. Two straight obstacles of aluminium alloy length 130 mm.
2. One straight obstacle length 40 mm.
3. One curved reflector radius 200 mm.
4. One trapezoidal plastic plate for refraction.
5. One wood hand wave roller.
6. One water dropper.
7. One pkt. rubber bands.
8. One foam plastic sponge.
9.One illuminant with a 12 V, 24 W lamp mounted in a lamp house and provided with a long supporting rod.
Description :-
Tuning Fork Activator is used as a surface to gently strike the tuning fork to activate vibrations.
Rubber activator is tapered so the bottom is wider for stability.
Made of solid rubber.
Description :-
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.
Description :-
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 100 N x 5 N 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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