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Physics Equipment
'g' BY FREE FALL APPARATUS, MAGNETIC RELEASE
For determination of acceleration due to gravity 'g' by measuring the time of fall of a steel spherical ball through a known distance. This apparatus consists of an electromagnet driven by a solenoid (for prompt release of the steel sphere on being disconnected) and gate switch unit mounted on a base. Both, electromagnet and the bottom unit provided with 4mm sockets for electrical connection. When the steel sphere strikes the plate of the gate switch unit near the bottom, the same is communicated to the timer by make/break of continuity to trigger the stopping of timer.
'g' By FREE FALL APPARATUS, MECHANICAL RELEASE
An excellent apparatus for determining the value of acceleration due to gravity 'g' to a better accuracy. The specially designed release mechanism permits use of spheres of different material [magnetic or non-magnetic) and sizes. Pulling the release pin of the sphere at the top breaks the continuity of wires connecting the release plate to the timer, starting the timing process, which is stopped immediately when sphere strikes the bottom plate. Height of release plate and bottom strike plate are adjustable. The complete assembly mounted on aluminium extrusion with a scale 0-100cm graduated in millimeters. By knowing the distance between the release plate and lower striking plate, and the time of fall, the value of 'g' can be easily evaluated.
'HELlOS' PLANETARIUM
A working model of the planetary system, which combined with a 'Star dome' makes an efficient, graphic and versatile aid for teaching basic astronomy. It comprises a circular base with a series of concentric rings for the model planets which revolve around the central Sun at their 'HELlOS' PLANETARIUM correct relative speeds, the Moon revolving around the Earth. Around the upper edge of the base is a calendar and a degree scale for setting the planetary positions. In addition, a zodiacal calendar is provided. The planets from Mercury to Saturn, can be positioned for any year and month by means of the degree scale on the rim of the base. The star domes [the one from the northern hemisphere is supplied with the planetarium] illustrate the position of stars and constellations, lines of right ascension and declination, the ecliptic and celestial equator. Supplied with teaching manual covering history, the Sun, planets, comets and space exploration as well as useful tips for demonstration. Complete with all accessories, and a 240V mains power unit, fitted with double insulation and thermal cut-out for overload protection, but without batteries.
'WHITLEY BAY' SMOKE CELL
Demonstrates the 'Brownian Motion' or random motion of smoke particles. A specially designed plastic box has a sliding lid at the top and contains a glass smoke cell, a cylindrical condensing lens and a low voltage festoon bulb. All components pre adjusted so as to focus the light of festoon bulb to the smoke cell at the correct hei~ht to obtained good contrast in the observation. The plastic box has flanges on either side to facilitate its mounting on the stage of microscope platform using clips. A hole in the lid is aligned with the smoke cell to enable focusing of microscope in the smoke cell. Provided with a pair of 4mm sockets for electrical connections. Also includes a squeeze type plastic bottle for use as smoke generator.
ABACUS
Consists of a wooden board mounted on a wooden base, over which 'U' shaped brass wires are mounted so that the arms of wires are on each side of board. The device is availble with 2,3,4,5 or 6 rows.
ACCESSORIES FOR OPTICAL BENCH, DELUXE, TRIANGULAR SECTION lens Holder, Adjustable Pin Hole Screen, Object Screen with Cross Wires, Object Screen with Wire mesh gauze, Iris Diaphragm , Micrometer Slit,
The following accessories are available optionally for use with OPTICAL BENCH, DELUXE, TRIANGULAR SECTION : lens Holder, Adjustable Pin Hole Screen, Object Screen with Cross Wires, Object Screen with Wire mesh gauze, Iris Diaphragm , Micrometer Slit, Grating Holder.
ACCESSORIES FOR OPTICAL BENCHES
The following accessories are available optionally for use with optical benches as per OPTICAL BENCH METAL PIPE, OPTICAL BENCH ALUMINIUM EXTRUSION, OPTICAL BENCH DOUBLE METAL ROD and OPTICAL BENCH WOODEN and are provided with metal support rods for their vertical mounting in the riders. The sizes of the components and lengths of the respective mounting rods have been designed to provide a common optical center.
ACCESSORIES FOR OPTICAL BENCHES - ADJUSTABLE SLIT
Circular metal screen 75mm diameter, with a 12.5mm central aperture. A screw-controlled, spring-loaded precision slit is mounted on one side of the disc. Maximum slit opening 4mm approx. with a useful length of 10 to 12mm.
ACCESSORIES FOR OPTICAL BENCHES - CANDLE HOLDER
Cylindrical metal holder cup shaped holder for supporting candles.
ACCESSORIES FOR OPTICAL BENCHES - COMBINED OBJECT AND RECEIVING SCREEN
Comprising a rectangular black metal frame 150x 100mm, with an aperture and a removable white card screen. The card has an aperture with an index point for use as an object, or the card may be inverted and used as a receiving screen. Mounted on a base
ACCESSORIES FOR OPTICAL BENCHES - CROSS WIRES
A circular black metal screen about 75mm diameter has a 10mm diameter aperture with cross wires.
ACCESSORIES FOR OPTICAL BENCHES - GROUND GLASS SCREEN
Rectangular screen. mounted in metal frame 100x75mm. with a central aperture of 63mm diameter.
ACCESSORIES FOR OPTICAL BENCHES - IRIS DIAPHRAGM
A circular black metal screen about 75mm diameter, with an adjustable iris diaphragm, maximum aperture 6mm.
ACCESSORIES FOR OPTICAL BENCHES - LAMP 240V, WHITE
A 240V 15W white BC pygmy lamp in a conical lamp house. Mounted on a metal rod. Supplied with 1. 5m of twin flex connecting lead.
ACCESSORIES FOR OPTICAL BENCHES - LENS HOLDER ADJUSTABLE
V-section with hinged arms to take any lens or mirror up to 75mm diameter
ACCESSORIES FOR OPTICAL BENCHES - LENS HOLDER CLIP TYPE
To securely hold 38mm diameter lenses.
ACCESSORIES FOR OPTICAL BENCHES - MICROMETER SLIT
Same as ADJUSTABLE SLIT but with a heavier screw thread of pitch 0.5mm, carrying a drum, which is spanided Into 50 spanisions giving a least count of 0.01mm. An index is provided with a 5mm scale graduated 0.5mm spanisions.
ACCESSORIES FOR OPTICAL BENCHES - OBJECT NEEDLE, MOUNTED
A steel needle point mounted in a rod, for use as image in lens/mirror experiments.
ACCESSORIES FOR OPTICAL BENCHES - PHOTOMETER, GREASE SPOT
For comparison of light intensity. Comprises a waxed paper screen with a wax-free central spot 16mm diameter mounted in a metal frame 100x75mm with central aperture of about 50mm.
ACCESSORIES FOR OPTICAL BENCHES - PINHOLE SCREEN
Circular black metal screen about 75mm in diameter, with a central hole O. 6mm diameter approx. or rectangular 100x75mm
ACCESSORIES FOR OPTICAL BENCHES - PLANE MIRROR
Rectangular shaped silver-backed mirror. mounted in metal frame 100x75mm.
ACCESSORIES FOR OPTICAL BENCHES - PRISM TABLE
For Supporting Prisms, Glass Blocks etc. A Brass Disc about B2mm Diameter, painted matte black.
ACCESSORIES FOR OPTICAL BENCHES - STAND FOR LENS HOLDER
Comprising a stout metal pillar. the top slides between two parallel rods and has a groove for taking lenses/mirrors with clamping screw for securing its position.
ACCESSORIES FOR OPTICAL BENCHES - STAND FOR OPTICAL BENCH ACCESSORIES
Comprising a metal pillar with hole for mounting uprights of accessories and lock-screw for securing them, mounted on a heavy base 60x60mm. An index line is engraved on one side of the base. Overall height 63mm.
ACCESSORIES FOR OPTICAL BENCHES OBJECT SCREEN
A circular white metal screen 75mm diameter, with a 10mm central aperture covered with 1. 5 rpm wire mesh gauze.
ACCESSORIES FOR RIPPLE TANK Cylindrical Rod Dipper- for producing straight waves
These accessories available optionally, permits more advanced activities with the ripple tank.
ACCESSORIES FOR RIPPLE TANK Elliptical Reflector - Rectangular shaped disc having elliptical cut-out at the center.
These accessories available optionally, permits more advanced activities with the ripple tank.
ACCESSORIES FOR RIPPLE TANK Model Crystal: Comprises of a rectangular matrix of 28 nuts and bolts (7x4) fixed in regular pattern on a rectangular disc, representing 4 rows of layers of a solid crystal
These accessories available optionally, permits more advanced activities with the ripple tank. Comprises of a rectangular matrix of 28 nuts and bolts (7x4) fixed in regular pattern on a rectangular disc, representing 4 rows of layers of a solid crystal. By adjusting motor speed and position of crystals, experiments on Bragg's reflection can be performed. The disc provided with 3 leveling screws for adjusting its level.
ACCESSORIES FOR RIPPLE TANK Trapezoidal shaped disc - for showing refraction of waves.
These accessories available optionally, permits more advanced activities with the ripple tank.
ACCESSORIES FOR TICKER TAPE TIMER
Consumables regularly used with ticker tape timers. available as spares
ACCESSORIES FOR TICKER TAPE TIMER Carbon Paper Discs 40mm diameter
Consumables regularly used with ticker tape timers. available as spares
ACCESSORIES FOR TICKER TAPE TIMER Paper Tape Roll. 100m length, 9.5mm wide
Consumables regularly used with ticker tape timers. available as spares
ACCESSORIES FOR TICKER TAPE TIMER Paper Tape Roll. 35m length, 9.5mm wide
Consumables regularly used with ticker tape timers. available as spares
ACCESSORIES FOR VAN DE GRAAFF GENERATOR
Accessories for VAN DE GRAAFF Generator.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Discharge Electrode on Stand
A highly polished aluminium sphere, in two parts, fixed on an insulated pillar, mounted on a stable base. Provided with a 4mm socket and a lead with 4mm banana plugs at both ends to connect it to the generator. When connected to the generator, it increases the intensity, length and spark of the generator because of increase in the effective capacitance due to both of them connected together. Can also be used separately as a charged sphere fortransferring electrostatic charges
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Discharge Wand
Discharge Wand
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Electric Plump
Comprises narrow stripes of colored ribbons mounted in a small stand with 4mm plug for inserting it on top of the dome. Operating the generator makes the ribbons acquire similar charge repelling each other resulting in spreading out and away from the dome, finally standing straight up.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Electric Whirl
Comprises a series oIL-shaped metal spokes with arms bent in same direction, arranged radially in circular fashion and free to rotate on an insulated stand. When connected to the charged dome or brought near the latter bringing near charged dome, it spins rapidly.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Faraday's Ice Pail
For showing that the electrical charge resides only on outer surface of a hollow conductor, with no charge on inner surface. Comprises a metal can with a 4mm plug at its bottom for attaching on top of the dome. Pith balls on rod can be mounted inside for demonstration.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Flying 8all
Comprises a lightweight metalized ball suspended through the thread, mounted on insulated handle. The ball is attracted by the charged dome due to electrostatic induction until it touches the dome, it is then violently repelled
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Head of Hair
When mounted on top of the dome through 4mm insert, operating the generator causes the hair to stand on end due to electrostatic repulsion of similar charge contained in the strands.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Hollow Cylinder
Comprises a hollow metallic cylindrical shell that can mounted horizontally on insulating stand. A metal sphere is mounted on top of cylindrical shell through a metal rod and suspends two pair of pith ball- one inside the shell and the other outside. When charged from the generator, the inner pith balls remain unaffected while the outer ones are repelled away showing the presence of charge on outer surface and its total absence on inner surface
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Insulating Stand
Comprises an insulating rod mounted on a stable base for supporting various accessories while use
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Lightening Plate
Comprises small, conductive leaves fixed on top of an insulating plate to form a zigzag path with small spacing between adjacent leaves, with provision for electrical connections at either end. Demonstrates that the electrical discharge follows the path of least resistance. When connected, high electrostatic potential from the generator, results in the flow of electricity through the leaves in the form of spark jumping across the gaps between the leaves. Can be used on insulating stand.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Neon Bulb
A small neon bulb carried on insulated handle, when brought near charged dome of the generator, it glows showing the ionization of the air surrounding the dome.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Pith Balls on Rods
A pair of pith balls mounted on an insulated rod. Demonstrates presence or absence of electrostatic charges. The pillar can also be mounted inside Faraday's pail.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Point Discharger
Comprises a metal pointed spike for demonstrating the property of pointed conductors to collect and discharge electrical charge much the same way as by lightening conductors. Also demonstrates the phenomena of electric wind or corona discharge.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Racing Ball
Comprises a lightweight, insulated ball sandwiched between two circular metallic discs. The rim of lower disc bent upward to prevent ball from escaping. The underside of the lower disc has provision for mounting on dome or insulating stand. On operating the generator after connecting the racing ball accessory, the ball gradually starts racing along the bent rim of lower disc
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Rubber Belt
For Yande Graff Generator supplied as spare.
ACCESSORIES FOR VAN DE GRAAFF GENERATOR Silver Snake
It consists of a metalized ribbon attached to an insulated handle. The ribbon is cut to a point so that when it repelled by the dome, it quickly loses its charge and repeatedly strikes back at the dome
