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51302 Wave Form Helix (
Slinky )
For demonstrating motion. Helical coil of flat section, tempered
steel wire. Coil diameter 7.8 cm, lenght closed 12 cm fully
extended 5 meter.
51302A Wave Form Helix ( Slinky )
Same as No. 51302. Coil diameter 5 cm, lenght closed 5 cm. |
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51303 Powell's Wave
Machine
For demonstrating the movement of progressive transverse waves.
Comprising 22 small balls on wire rods, with eccentric motion
attachment, driving handle and fitted on polished wooden base. |
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51304 Wave Apparatus
Demonstration Model
For demonstration longitudinal and trasverse motions. Consisting
of a number of eccentric discs supporting a series of metal
rods. On revolving the handle, transverse waves are obtained.
Longitudinal waves are obtained with bent rods running in a
metal guide. |
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51305 Ripple Tank
The ripple tank consists of a wooden framed tray with a plate
glass base and detachable legs, overall size of tray 600x520x56
mm deep.
A pair of support rods with integral G clamps is provided which
can be attached to the sides of the tank and used to carry the
wave generating system. A set of 4 metal reflectors is supplied
consisting of a pair of stright reflectors (barriers) 150x25 mm,
a curved reflector of 215 mm chord lenght x 25 mm high and a
short stright reflector 25 x 25 mm. To reduce un wanted
reflections from the sides of the tank a set of four loose gauze
strips is provided. The ripple are produced by a small 1.5 to
4.5 volts D.C electric motor mounted ath the centre of a 330 mm
wave generator bar with a row of holes to mount the sphericl
dipper. With white hardboard receiving screen. |
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51305A Ripple Tank
Power Supply
This unit provids two alternative A.C. output of 6 and 12 volts
for the illuminate and a continuously variable D.C. output of
upto 3 volts for the motor. The unit is housed in painted steel
case with colour coded 4 mm socket terminals, works on 220-240
volts A.C. |
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51306 Tuning Forks
Nickle plated, plain shanks, frequency marked C(256), D(288),
E(320), F(341.3), G(384), A(426.6), C(512) , set of 8 in a box.
A Tuning Forks
Same as No. 51306, but individual tuning fork
B Tuning Forks Nickle plated, screwed shanks frequency marked C
(256), D (288), E (320), F (341.3), G (384), A (426.6), C (512),
set of 8 in a box.
C Tuning Forks Same as No. 51306 - B, but individual tuning
fork. |
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51307 Tuning Fork on
Rersonance Box
Nickle plated, plain screwed shasnks, mounted on polished wooden
resonance box with hammer.
Tuning Forks
A 1
B 2
C 3
D 4
51307A Pair Tuning Forks
On individual resonance boxes, with one fork fitted with sliding
mass to demonstrate beats. Complete with hammer.
51307B Hammer
Wooden with cork sheet at ends. |
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51308 Frequency
Apparatus ( Falling Plate)
For comparing frequencies of two tuning forks by falling plate
method. Consists of a grooved vertical adjustable support to
take a plate of smoked glass. Tuning forks with bristles are
clamped on a wooden block. Complete with two tuning forks. |
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