Cup Loudspeaker Kit
To illustrate how electric signals are converted into sound in loudspeakers. This kit can also be used to explain electromagnetism, the interaction of magnetic fields and the mechanical amplification of sound. With assembly and activity instructions.
In Stock
In Stock
Related Products
Related products
-
Wave & Sound
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 -
Wave & Sound
Bell in Bell Jar
Without air or matter, sound waves cannot travel and therefore cannot be heard. This bell jar effectively demonstrates this concept using a battery operated buzzer housed inside the jar. When the buzzer is placed beneath the jar and a vacuum is created inside the jar, students will observe a total absence of sound. Once the air is returned to the jar, the sound of the buzzer can be heard once more. The activity requires a vacuum pump & plate, not included.
PH36015A -
Wave & Sound
Ripple Tank
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.
- One illuminant with a 12 V, 24 W lamp mounted in a lamp house and provided with a long supporting rod which can be attached to a retort stand. With instructions.
Without power supply
PH36044
