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WAVE MOTION APPARATUS (LSE)
For demonstrating the movement of progressive transverse waves. Comprises 22 small balls on wire rods, with eccentric motion attachment, with driving handle and fitted on wooden base.
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RIPPLE TANK (LSE)
| The instrument is a device to illustrate the laws of wave phenomenon-using ripples on the surface of water as the prototypes of all transverse waves. Ripple tank illustrates important wave motions like rectilinear and circular. It can also demonstrate refraction, diffraction and interference of water waves. Tank is supported by four legs having leveling screws. Size of the tank is 595x510x70mm supplied complete with rippler assembly, two straight obstacles 130mm long, one straight obstacle 40mm long, curved reflector 200mm radius, transparent refraction plate, wooden wave roller, one pack of rubber bands, water dropper, sponge, illuminator, hand stroboscope and suitable power supply. It is supplied with instruction manual. |
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POWER SUPPLY UNIT (LSE)
For use with the ripple tank. It has continuously variable DC output so that the speed of the motor & the frequency of the ripples may be varied.
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DAL PURPOSE RIPPLE TANK (LSE)
| It is used as a demonstration model with an Overhead Projector. Comprises a steel frame with an acrylic window. The frame is shared to form beaches on all sides to minimize unwanted reflections & fits neatly onto an overhead projector. The undersides of the frame has threaded metal inserts to take the four legs provided enabling the tank to be used as a free standing beach model, if required. Facilities are provided for mounting the ripple tank illuminant for this purpose. A gantry is supplied for supporting a motor beam, the height of which is easily adjustable allowing it to be positioned for maximum effect. Ripples are produced by a small 1.5 to 4.5V DC motor mounted on the plastic beam of 240mm length. A standard cam is fitted to the motor spindle to give an oscillatory motion & row of nine holes in the beam are for mounting the spherical dippers for production of circular ripples. |
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HAND STROBOSCOPE (LSE)
HAND STROBOSCOPE A slotted hardboard disc, with finger hole, is pivoted on a bearing mounted which also acts as a convenient handle. The disc has twelve radial slots 50x3mm extending to its edge. Diameter of the disc is 250mm.
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STUDENT SONOMETER (LSE)
Comprising wooden board 690x90mm mounted on four feet, at one end two 5 kg x 100gms spring balances with hooks & at the other end are two wrest pins with 3 bridges out of which one is large to span both wires & the other two are small for the individual wires. Complete with steel wires & pins.
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TUNING FORKS SET (LSE)
Chrome steel, plain shank.
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TUNING FORKS SET (LSE)
Blue steel, plain shank.
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TUNING FORKS SET (LSE)
Made of rustproof aluminium alloy, good quality.
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RESONANCE BOX FOR TUNING FORKS (LSE)
For demonstration of the formation of a basic major chord. Made from good quality wood.
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HAMMER (LSE)
HAMMER Made of wood.
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MELDE?S APPARATUS (LSE)
To demonstrate stationary waves by means of stretched strings. Consists of an electrically maintained tuning fork, bench clamp pulley, scale pan, & meter scale.
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ORGAN PIPE (LSE)
ORGAN PIPE Varnished wood with glass front & membrane suspended on cord for loading with sands to show positions of nodes & anti nodes. Overall length 760mm.
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ORGAN PIPE SLIDING (LSE)
With graduated sliding piston. The organ pipe is of a square section, of polished wood & fitted with a tapered mouthpiece. The slider is also square in section 32x32mm, of wood & with a knob at the end for easy control.
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ORGAN PIPE OPEN (LSE)
Open ended, square section, with tapered mouthpiece. The pipe is of polished wood & has an air column length of 405mm approx., which gives a note approximating to A426.
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