Products

Physics Equipment

STEAM BOILER Superior Design in thicker gauge copper sheet- more durable and sturdy construction.

Used as a source of steam, wherever needed in the experiments. Comprises a cylindrical copper body with a conical top having short neck for sealing the mouth at the top using rubber bung, and is fitted with a nozzle for steam outlet and loop handle. A transparent plastic tube connected vertically to the reservoir through small L-shaped tubules near top and bottom indicates water level to prevent dry heating of the boiler. Capacity - 2 liters.

STEAM ENGINE FACTORY MOOEL

Capable of running a small Dynamo to light the lamp with the help of its flywheel and driving gear. Complete with pressure gauge, whistle and safety valve. The model is mounted on thick metal sheet base synthetic hammer finish. Approx overall dimensions 410 x 325 x 310mm (length x width x height)

STEAM ENGINE FACTORY MOOEL Steam Engine Factory Model with Dynamo

STEAM ENGINE FACTORY MOOEL Steam Engine Factory Model without Dynamo

STEAM ENGINE MODEL WITH BOILER

Operation of a commercial steam engine is well illustrated with this working model. The extra large size unit is provided with a horizontal boiler with a whistle. safety valve. steam gauge. Mounted on a metal base. Heating caused due to burning of fuel cause water in the boiler to boil and the resulting steam makes the flywheel mounted on the crank to rotate. A pulley mounted at the free end of flywheel shaft can be used to drive dynamo etc .. to demonstrate the conversion of chemical energy to heat, mechanical and electrical energies respectively. Supplied complete with fuel. fuel burner and screw driver for opening the boiler to fill it with water.

STEAM ENGINE SECTIONAL

Made of cast-metal. Model showing longitudinal section of cylinder covered with a transparent plate, clearly showing the piston and position of valves. Complete with working parts like piston, slide valve, crank, flywheel, connecting rods etc., and demonstrates the conversion of linear motion of piston rod to the rotatory motion of the crank shaft. Can be made to operate using a simple air pump or even by blowing with mouth.

STEAM GENERATOR

Useful for experiments involving heating by means of steam or where continuous source of steam is needed. Made of heavy gauge aluminium sheet to provide sturdiness and durability for withstanding high boiling pressures, with riffled nozzle for steam outlet. Consists of boiler assembly, two rubber stoppers - one solid and one with a hole for thermometer, one sample handle and tripod stand assembly.

STEAM TRAP, GLASS

Designed for use with steam generator or boiler to trap condensed steam. Cylindrical shaped glass tube, with riffled connection tube of smaller diameter at both ends. Improved form, overall length about 160mm. Made from borosilicate glass.

STEEL SPHERES

Solid steel spheres, hardened and chrome plated. Available in sizes (diameters)

STEEL SPHERES 12mm set of 100

Solid steel spheres, hardened and chrome plated 12mm set of 100

STEEL SPHERES 16mm set of 100

Solid steel spheres, hardened and chrome plated 16mm set of 100

STEEL SPHERES 19mm set of 100

Solid steel spheres, hardened and chrome plated 19mm set of 100

STEEL SPHERES 3mm set of 100

Solid steel spheres, hardened and chrome plated 3mm set of 100

STEEL SPHERES 6mm set of 100

Solid steel spheres, hardened and chrome plated 6mm set of 100

STEP DOWN TRANSFORMER

A simple step down transformer mounted on top of the plastic case, provides low voltage AC output. available for different outputs 4.5,9 and 12V at 250mA

STETHOSCOPE

Good quality, with rubber tubing. Highly sensitive. Useful for observing faint sounds and vibrations after due amplification.

Stroboscope

Specifications : Size: 20 x 12 x 14 cm – Frequency range: 1? 300 Hz – External input for triggerLight from a timing source. A Stroboscope is a pulsed lamp which is used to observe rapidly moving phenomena, such a vibrating string or waves in a Ripple Tank. If the frequency of “flashes” from the Stroboscope matches the frequency of the object being observed, it causes the eye to see the image as having been frozen at that matched frequency. Hence, useful measurements can be made and observations made easy. LAWS & PRINCIPLES INVESTIGATED : • Frequency determination in various contexts.

STROBOSCOPE, DIGITAL

A microprocessor controlled, lightweight stroboscope featuring xenon lamp and permits wide range of flashing rates [or frequency). Ideal for operation at low frequencies for strobe photographic experiments such as in precise experiments and at high frequencies for observation and measurement of rapidly varying periodic motions. The 4-digit LED digital readout permits accurate frequency measurements. The complete stroboscope is housed in impact resistant moulded plastic case with plastic mirror type reflector at the front. Provided with coarse and fine frequency control through respective knobs, power ON/OFF switch, range [Low/High) select switch at the rear. Includes detachable power cord. Specifications :: Display : 10mm, 4-digit, 7 segment bright red LED display , Flash rate : 100 to 10,000 flashes per minute (FPM), Accuracy : ? (0.05% + 1 digit), Resolution : 0.1 FPM/RPM (<1,000 FPM/RPM) 1 FPM/RPM (1,000 - 9,999 FPM/RPM) 10FPM/RPM (>10,000 FPM/RPM), Sampling Time : 1 second, Calibration : Crystal time base and microprocessor circuit, Flash Tube : Xenon Lamp, Flash Duration : Approx. 60 to 1000?s, Flash Colour : Xenon White 6500?K, Flash Energy : 4 Joules, Beam Angle : 80?, Operating Duty Cycle : 30 minutes < 3000 FPM / RPM 5 minutes (> 3000 FPM / RPM), Power Supply : 220V AC ? 10%, 50/60Hz, Power Consumption : < 30W, Operating Condition : 0-50'C, up to 80% RH

SURFACE TENSION BALANCE SEARLE'S

For determination of surface tension of liquids. Comprises a metal bridge attached to a vertical rod, which in turn is mounted on pillar of a heavy cast metal stand adjustable for height and has leveling screws. Across the two arms of U?shaped bridge, a steel torsion wire is fixed with provision for adjusting its torsion. A pan is hung from a notch in the pointer and has a hook at its underside from which can be suspended a light weight rectangular frame or a metal clip to hold a micro slide edge. The tip of the pointer moves over a graduated scale mounted vertically on the end of arm fitted to the bridge. With rectangular wire frame, slide clip, six micro slides and spare length of torsion wire. The sensitivity of the balance depends on the modulus of elasticity of the torsion wire. Wire of different diameter will provide different sensitivities.

TANGENT GALVANOMETER

Comprises a circular coil wound on non-magnetic bobbin of bakelite about 160mm in diameter mounted vertically on a non-magnetic, cast metal base, with the coil width very small as compared to its diameter. A compass box (magnetometer) is located at the center of the coil to make its needle experience uniform magnetic field due to current in the coil. The coil consists of three windings of enameled copper wire of different thicknesses - one each of 2, 50 and 500 turns. A circular platform on base carries a set of four socket terminal for connection to the coils and are marked for each coil.

TANGENT GALVANOMETER, SIMPLE

Comprises a coil, with tappings at 5 and 10 turns, wound from enameled copper wire on insulated plastic ring and supported vertically in a plastic stand. The stand has a set of three terminals at one side for electrical connection and a rectangular horizontal platform on top supporting a magnetic compass.

TELEGRAPH SET, LECTURE PATTERN

For demonstration of telegraphic communication to a group of students. Comprises a set of two inspanidual complete working model, each unit is mounted on wooden polished vertical stand, all connections are clearly visible to explain the principle of telegraph. Each unit is workable on 4-6 volts DC.

TELEGRAPH SET, TABLE TYPE

Set of TWO units. Each unit is fitted with one Morse key one sounder and ON/OFF switch for battery with four terminals. Each unit is works on 4-6V DC.

TELEPHONE TRANSMITIER & RECEIVER COMBINED

Showing clearly all components and connections working demonstration model of telephonic communication.

TELESCOPE

Comprising a plano-convex lens of about 3Bmm diameter x 150mm FL, mounted in a tube about 400x50mm [length x diameter), and a double convex lens of 50mm diameter 500mm FL, mounted in a tube 400 x 55mm diameter. The small tube is located in the large tube by means of foam plastic rings. which provide an effective sliding. Equipped with rod for stand mounting. Useful for terrestrial as well as astronomical viewing. Supplied without stand.

TELLERIUM

A high quality tellurium designed to demonstrate on a large scale the relative movements of the Sun. Earth and Moon, so as to understand the causes of a number pf phenomena such as day and night. changing length and direction of shadows. seasons of the year, phases of the Moon, eclipses of the Sun and Moon. Hand operated with belt drive.

Thermal Conductivity Apparatus

Specifications : Total length - approx. 35 cm. Simple apparatus to show thermal expansions in introductory physics courses. Demonstrates the different thermal conductivity of four different metal rods (brass, copper, aluminium, iron). With wooden handle. LAWS & PRINCIPLES INVESTIGATED : • Conductivity of different materials.

THERMAL CONDUCTIVITY APPARATUS, STAR SHAPED

For demonstration of differences in the thermal conductivity of five different metal - brass, copper, aluminium, mild steel and stainless steel. These 5 metal rods spread radially outward. equally spaced on each side of hexagonal brass hub, and have a small recess at the other end for holding paraffin wax. The sixth side of brass hub has a metal rod terminating in an insulating handle. On heating the central hub, the wax contain ed in the cavities of different metals melts at different times, implying their different thermal conductivities.

THERMAL CONDUCTIVITY BARS

Ideal for comparison of thermal conductivity of different metals quickly and conveniently. Unique, new conductivity bar set features convenient liquid crystal indicators mounted in robust holders. Comprises four identical metal bars of same shape and size, each of different metal - copper, aluminium, brass and steel, held firmly parallel to one another in a rigid moulded carrier with a hole for convenient suspension. Conductivity value of each bar is clearly marked on the back of the support. The sensitive liquid crystal temperature indicators working in low temperature range, are attached to the front of all the four metal bars. The temperatura indicators are marked at 1 cm interval to facilitate charting the movement of temperature gradients. The rate of heat flow is indicated by timing the colour change across these markers. The demonstration requires only a beaker or container of hot water, thus doing away with open flames, hotplates, or messy "melting wax" method of comparison. Within seconds of placing the ends of the bars in hot water, a visible "heat pulse" travels to the copper bar; the steel bar takes several minutes to conduct the heat to its upper end. Timing the "heat pulses" enables estimation of the relative conductivities and their comparison with the stated the,oretical values. Also demonstrates the conduction of heat from a heated bar to its end, if cooled.

THERMAL CONDUCTIVITY OF COPPER, SEARLE'S APPARATUS

The apparatus consists of a copper rod of size about 300 x 25mm (length x diameter). one end having a steam chamber connected to a steam boiler through inlet and outlet tubes, and a copper water cooled spiral at the other end. Support tubes provided at two points along the length of the bar for positioning thermometers and another two thermometer supports at the ends of the spiral copper tube. Fitted in polished wooden case, packed with felt for thermal insulation and with removable front. Supplied without thermometers.

THERMAL CONDUCTIVITY OF METAL APPARATUS

Comprising strips of four metal, one each of copper, iron, aluminium and brass fixed in symmetrical fashion, perpendicular to each other. on a wooden frame. with the strips meeting at the center. Outer ends of the strips has small recesses for holding paraffin wax.

THERMAL CONDUCTIVITY OF METAL APPARATUS Metal Strips mounted on circular wooden frame

THERMAL CONDUCTIVITY OF METAL APPARATUS Metal Strips mounted on square wooden frame

THERMAL CONDUCTIVITY OF METALS

Comprising three metal rods of different types, one each of copper. brass and iron, fixed on a metal frame and converging at its centre. For comparing the thermal conductivities of different materials. The metal frame can be clamped on a suitable retort stand for safe and convenient working.

Thermal Expansion Bar

Specifications : Plastic base: dimensions approx. 12 x12 cm. Simple and effective piece of equipment to show thermal expansion. A model to demonstrate the change of diameter of a metal rod when heated including brass rod with insulated handle. Mounted on sturdy shock resistant plastic base. COMPONENTS : • Brass Rod (with insulated handle) • Metal Plate with Base. LAWS & PRINCIPLES INVESTIGATED : • Thermal expansion. LAWS & PRINCIPLES INVESTIGATED : • Thermal expansion • Tensions due to expansion and contraction.

THERMISTOR

For demonstrating the dependence of the resistance on temperature and practical application of this property.

THERMOCOUPLE, COPPER-IRON

Copper and iron wires. four each joined alternately in V-shape by twisting and brazing together to form a total of seven junctions, four on the outer side and three on the inner side. With brass connectors for electrical connection

THERMOMETER WALL

Spirit filled thermometer with bulb guard and clear black markings. Double scale, graduated -20 to 50 x 1?C and 0? to 120 x 2?F, length approx. 380mm.

THERMOMETER, MAXIMUM AND MINIMUM, SIX'S, WITH SHADE

Spirit and mercury filled, dual scale thermometer, @ reading in both Celsius and Fahrenheit. Comprises U-shaped specially designed capillary for easy reading of mercury level or steel index pins in the column. Scale, graduated20 to 50 x 1?C and 0 to 120 x 2?F. Movement of mercury in the U-bend, as a result of expansion or contraction of spirit in both the limbs, forces the respective steel indices to move up along the column. Readings are taken at lower end of indices, whose position can be reset by magnet supplied. Complete weather-proof construction with shade at the top.

THERMOMETER, WALL, BIG

Similar to THERMOMETER, WALL, DUAL SCALE, but in bigger size. Overall dimensions about 500 x 90mm (Height x Width)

THERMOMETER, WALL, DUAL SCALE

A red spirit filled thermometer made of specially designed capillary facilitates the reading by magnifying the inside column against well contrasted engraving or printing of markings and figures in bold. Range: 20 to 50 x 1?C, -10 to 122 x 2?F. With provision for wall mounting. Available in different variants.

THERMOMETER. MAXIMUM ANO MINIMUM, SIX'S WITHOUT SHADE

Similar to THERMOMETER, MAXIMUM AND MINIMUM, SIX'S, WITH SHADE in functioning, but mounted on plane baseboard without shade. Double scale, graduated -20 to 50 x 1?C and 0 to 120 x 2?F. spirit and mercury filled with steel index pins. Includes magnet for resetting and provision for wall mounting.

THERMOPILE

Demonstrates the generation of thermo emf in accordance to the Seebeck effect. Comprises a number of Bismuth mil and Antimony (Sb) couples joined together in series and mounted in an annular metal ring with insulation between them. The Bi-Sb junctions in the metal ring are arranged in the rectangular fashion forming the sensitive area that comprises only of hot junctions, the cold junctions being the thick walled metal body. Terminals provided for electrical connection. A sheet metal conical funnel has a polished inner surface to facilitate the focusing of radiant heat on to the pile junctions and is fitted over the sensitive end of the metal ring to increase the directional sensitivity and to minimize cooling of the pile junctions by extraneous air currents. The complete apparatus mounted on a stable cast metal base through a plated metal rod.

THERMOPILE 12 pairs of Bismuth and Antimony Poles

THERMOPILE 24 pairs of Bismuth and Antimony Poles

THERMOPILE 4B pairs of Bismuth and Antimony Poles

THERMOSCOPE ETHER mounted on stand

For detecting thermal radiation. Two glass bulbs about 33mm diameter, attached to the ends of a U-shaped glass tube having one limb smaller than the other. Glass bulb attached to the smaller limb painted matt black. Apparatus partially evacuated.

THERMOSCOPE ETHER without stand

THERMOSTAT MOOEL

Demonstrates how the bending due to differential expansion of two different metal strips can be used for operating the thermostat for temperature control. A vertically mounted bimetallic strip bends with the rise in temperature causing it to open the electrical contact and closing the same on cooling, thus controlling the switching ON/OFF of the circuit. Consists of binding posts for connection to low current circuits and adjustable contacts. Mounted on base

Three-Wire Sonometer

Enquiring the laws of the vibrating string. Specifications : Size: 67 x 10 x 10 cm Weight: approx. 1.5 kg. Appealing and elegant, the Sonometer is a classical device developed in order to study vibrating strings. With this apparatus it is possible to investigate the dependence of the pitch on the length, tension and thickness of a vibrating string. LAWS & PRINCIPLES INVESTIGATED : • Vibration frequency of a stretched string as a function of the length, tension and density of the string • Frequency versus length • Frequency versus tension • Frequency versus mass per unit of length.