Products

For use with electroscopes, available as spare, pack of 6.

A diffraction grating spectroscope for viewing visible lines and absorption spectra. The spectrum is visible, superimposed on a scale, which gives the approximate wavelengths. The high resolution diffraction grating replica used, produces extremely bright spectrum. Complete body of unbreakable moulded plastic and can easily be held in the hand. The construction eliminates internal reflections to provide the sharpest, clearest spectrum.

Specifications : Length of the bar 130 mm – Length of the chain 100 mm. Simple and effective piece of equipment for qualitative experiments. A concrete demonstration of the cubic thermal expansion of a solid. Ring and ball on chain with 2 wooden handles. The ball passes through the ring when cold but will not pass through after being heated. LAWS & PRINCIPLES INVESTIGATED : • Cubic thermal expansion of solids.

Demonstrates that the objects fall at the same rate of acceleration in vacuum under the effect of gravity irrespective of their relative weights and sizes. Consists of a thick-walled glass tube fitted with rubber bungs at each end to seal the tube. One of the rubber bungs has a glass tube of about 8mm diameter fixed through hole in it that has rubber tubing with clip for connecting it to vacuum pump

Demonstrates that the objects fall at the same rate of acceleration in vacuum under the effect of gravity irrespective of their relative weights and sizes. Consists of a thick-walled glass tube fitted with rubber bungs at each end to seal the tube. One of the rubber bungs has a glass tube of about 8mm diameter fixed through hole in it that has rubber tubing with clip for connecting it to vacuum pump

Specifications : Size: 62 x 8 x 12 cm – Weight: approx. 2.2 kg. Gunther Expansion Apparatus, can be used to accurately and easily investigate the expansion of metals with increasing temperature. This is an ideal apparatus for determinating the coefficient of the linear expansion of a solid. The apparatus comprises of a double metal plastic jacket containing the rods which will be raised to a temperature of 100?C. A micrometer screw gauge is mounted at one end and will show any expansion of the rods. COMPONENTS : • Gunther Apparatus • Metal Rods Set (Brass, Aluminium, Iron) • Thermometer (-10 to 110?C ). LAWS & PRINCIPLES INVESTIGATED : • Linear thermal expansion.

A simple apparatus comprising of a dynamically balanced metal rotor shaft mounted on a gimbal ring.

Circular dial type hygrometer with scale 0 to 100 x 1% RH (Relative Humidity). In metal case.

Simple model, hand driven to show the student stroboscope effects. A circular black disc having radial slots extending to the edge of the disc. Ball bearing mount at the center minimizes friction. With handle for rotation.

Specifications : Size: approx 28 x 22 cm, Weight: approx 100 g. A simple and affordable way to begin studying the spectral lines. Handheld Spectrometer is the best solution to begin studying the spectral lines of a light source. With this instrument every single student could explore spectrometry by his own. Altay’s Handheld Spectrometer allows to detect the spectral lines with precision. LAWS & PRINCIPLES INVESTIGATED : • Light from excited energy levels • Monochromatic light.

Comprising a three limbed glass tube mounted on a wooden stand with a scale graduated 0-50cm x 1 mm. Rubber tubing attached to the third short central limb is used to apply suction to the two longer tubes. The height of liquids ih both the longer columns relates to their respective densities, the comparison of which directly implies the ratio of their densities. To facilitate The column height readings both the longer tubes are equipped with a vertical sliding index pointer

Comprising a three limbed glass tube.

For exploring the various concepts of optics involving reflection and refraction using ray tracing technique. Comprises a sheet metal disc, about 30cm in diameter, painted white at the top with clamping assembly at its underside for mounting it on a vertical support rod in either of horizontal or vertical plane and is rotatable about its axis. The upper side of disc has a circular scale along its rim graduated 90?-0-90?-0-90?x1? and spanides the disc in four equal quadrants with its center clearly marked. Shapes of various optical elements also clearly marked on the disc to facilitate their placement while performing experiments, The clamp at the underside has metal bar projecting radially outside with adjustable lamp holder mounted at the other end with an adjustable collimating lens to get spanergent, convergent or parallel beam as required. A rotatable disc attached in front of collimating lens provides option of single, double, triple or quadruple slits for range of experiments. Complete assembly mounted on stable cast metal heavy base. Supplied complete with reflective components - one each of plane glass mirror, polished semi-circular cylindrical mirror; and set of 6 refractive components, acrylic blocks (prisms) - one each of semicircular, bi-convex, bi-concave, right angled prism, equilateral prism and trapezoidal prism. All optical elements provided with powerful magnets at their bottom for placing them securely on the disc in either of horizontal or vertical disc position. The bottoms of all refractive components are frosted to minimize internal reflections and revealing the path of light as it passes through.

One each of semi-circular, bi-convex, bi-concave, right angled prism, equilateral prism and trapezoidal prism, packed in a case for use with Hartle's Optical Disc . For exploring the various concepts of optics involving reflection and refraction using ray tracing technique. Comprises a sheet metal disc, about 30cm in diameter, painted white at the top with clamping assembly at its underside for mounting it on a vertical support rod in either of horizontal or vertical plane and is rotatable about its axis. The upper side of disc has a circular scale along its rim graduated 90?-0-90?-0-90?x1? and spanides the disc in four equal quadrants with its center clearly marked. Shapes of various optical elements also clearly marked on the disc to facilitate their placement while performing experiments, The clamp at the underside has metal bar projecting radially outside with adjustable lamp holder mounted at the other end with an adjustable collimating lens to get spanergent, convergent or parallel beam as required. A rotatable disc attached in front of collimating lens provides option of single, double, triple or quadruple slits for range of experiments. Complete assembly mounted on stable cast metal heavy base. Supplied complete with reflective components - one each of plane glass mirror, polished semi-circular cylindrical mirror; and set of 6 refractive components, acrylic blocks (prisms) - one each of semicircular, bi-convex, bi-concave, right angled prism, equilateral prism and trapezoidal prism. All optical elements provided with powerful magnets at their bottom for placing them securely on the disc in either of horizontal or vertical disc position. The bottoms of all refractive components are frosted to minimize internal reflections and revealing the path of light as it passes through.

Specifications : Size: 73 x 50 x 16 cm – Weight: approx. 6 kg, Packing: durable ABS plastic carry case with foam inserts. COMPONENTS : Universal base (2x) • Support Rod, length 35 cm (2x) • Support Rod, length 50 cm (2x) • Bosshead (4x) • Swivel bosshead (2x) • Digital multimeter • Thermocouple type T • Beaker, low form 500 ml • Beaker, low form 250 ml • Beaker, low form 100 ml • Cylinder graduated 100 x 1 ml • Centrifuge Tube 100 ml • Filtering Flask 500 ml • Silicone Tubing • Drying Tube • Extension clamp with rod (2x) • Mercury thermometer, range: -10?C/+110?C x 1?C (2x) • Calorimeter • Joule’s law unit • Stackable Plug Lead, 50 cm, red colour, plug 4 mm • Stackable Plug Lead, 50 cm, black colour, plug 4 mm • Silicone grease • Rubber stopper with one hole (37 x 28 x 5 mm) • Rubber stopper, solid • Rubber stopper with one hole (23 x 16 x 4 mm) • Paraffin block (4x) • Set of two cylinders (stainless steel and aluminium) • Sponge piece • Set U-shaped rod • Specific heat cylinders. • Wire gauzes with round ceramic centre (2x) • Bunsen Burner • Tripod Stand for Bunsen Burner • Gas Burner Tubing, for butane/propane gas • Micrometer Dial Gauge, range: 0 ? 10 mm sensitivity: 0.01 mm • Support for Micrometer Dial Gauge with knob • Pulse glass • Potassium Permanganate • Bimetallic strip with electric contact. LAWS & PRINCIPLES INVETIGATED : • Thermal radiation • Boiling and condensation • Calorimeter and Joule’s Law • Dalton’s Law of Partial Pressures • Equilibrium temperature of mixed liquids • Evaporation of two different liquids • Expansion of ice • Thermometer’s time constant and fixed points of a thermometer • Fourier’s Equation and Fourier’s Law • Heat sensitivity and Locke’s Law • Linear expansion of a solid • Wet and dry bulb hygrometer, relative humidity, psychrometry and moisture content • Newton’s Law of Heating or Cooling • Phase transition • Pulse glass functioning principle • Saturated and supersaturated solutions • Different solution phenomena at different temperatures • Specific Heat • Thermal agitation, conduction and expansion • Thermostat and thermocouple • Peltier-Seebeck effect.

To show that cathode rays produce heat when they fall on matter. Upon focusing the rays at a point, cathode rays generate intense heat shown by the red heating of platinum foil.

When cathode rays are focused on wax coated on the outside of the upper round head of cathode ray tube, the wax melts quickly showing heat generated by cathode rays.

Specifications : Diameter: 2 cm – Unstretched length: 1 m. LAWS & PRINCIPLES INVESTIGATED : • Transversal waves.

A functional model of the earliest form of steam turbine described by Hero of Alexandria. Comprising a borosilicate glass bulb 10mm diameter approx., with side arms bent at right angles and formed into jets at their tips. The bulb is mounted horizontally on a stand, which leaves it free to rotate about its axis. Boiling the water contained in bulb ejects steam from the nozzles with high velocity triggering its rotation. Supplied complete with stand but without burner.

A functional model of the earliest form of steam turbine described by Hero of Alexandria. Comprising a borosilicate glass bulb 10mm diameter approx., with side arms bent at right angles and formed into jets at their tips. The bulb is mounted horizontally on a stand, which leaves it free to rotate about its axis. Boiling the water contained in bulb ejects steam from the nozzles with high velocity triggering its rotation. Supplied complete with stand but without burner.

A functional model of the earliest form of steam turbine described by Hero of Alexandria. Comprising a borosilicate glass bulb 10mm diameter approx., with side arms bent at right angles and formed into jets at their tips. The bulb is mounted horizontally on a stand, which leaves it free to rotate about its axis. Boiling the water contained in bulb ejects steam from the nozzles with high velocity triggering its rotation. Supplied complete with stand but without burner.

A functional model of the earliest form of steam turbine described by Hero of Alexandria. Comprising a borosilicate glass bulb 10mm diameter approx., with side arms bent at right angles and formed into jets at their tips. The bulb is mounted horizontally on a stand, which leaves it free to rotate about its axis. Boiling the water contained in bulb ejects steam from the nozzles with high velocity triggering its rotation. Supplied complete with stand but without burner.

For studying the optical properties of liquids and determination of their refractive index by filling them in the hollow optical shapes. Made from ordinary plate glass, properly cemented with optical cement. All shapes have opening at the top for pouring in liquid.

Specifications : Size: 30 x 20 x 80 cm – Weight: approx. 2 kg. The Hooke’s Law experiment set allows students to investigate the relationship between the force applied to a spring and the amount of stretch on the spring. COMPONENTS : • Hooke’s Law Apparatus Stand • Cylindrical Mass with Hook (25 g) (2x) • Cylindrical Mass with Hook (50 g) (2x) • Spring (length 150 mm) • Spring (length 75 mm) • Spring (length 122 mm) • Weight Holder • Sliding Support with Pivot. LAWS & PRINCIPLES INVESTIGATED : • Hooke’s Law • Determination of the elastic constant of a spring • Hydrostatic balance.

Similar to HOOKE'S LAW APPARATUS, SS SCALE but with plastic mirror scale instead of SS scale. Consists of a mirror with 12cm long scale printed on it, graduated in millimeters. fixed on a vertical metal support rod.

For the demonstration of Hooke's Law that the elongation produced in a spring within elastic limits is proportional to the load applied to it. Also useful for investigating potential energy and investigating masses. Comprises of a metal rod carrying vertically a polished stainless steel scale 0 to 15cm, with provision for its height adjustment. An integrated mass hanger/pointer is connected to the lower end of the spring with the eye-shaped upper end for suspension through an adjustable collar with cross bar. which is positioned above the scale. Complete apparatus mounted on a stable base.

For the demonstration of Hooke's Law that the elongation produced in a spring within elastic limits is proportional to the load applied to it. Also useful for investigating potential energy and investigating masses. Comprises of a metal rod carrying vertically a polished stainless steel scale 0 to 15cm, with provision for its height adjustment. An integrated mass hanger/pointer is connected to the lower end of the spring with the eye-shaped upper end for suspension through an adjustable collar with cross bar. which is positioned above the scale. Complete apparatus mounted on a stable base.

For the demonstration of Hooke's Law that the elongation produced in a spring within elastic limits is proportional to the load applied to it. Also useful for investigating potential energy and investigating masses. Comprises of a metal rod carrying vertically a polished stainless steel scale 0 to 15cm, with provision for its height adjustment. An integrated mass hanger/pointer is connected to the lower end of the spring with the eye-shaped upper end for suspension through an adjustable collar with cross bar. which is positioned above the scale. Complete apparatus mounted on a stable base.

Specifications : Height approx: 30 cm. Hope’s Apparatus is the simplest way to verify maximum water density at 4?C. The solid form of most substances is more dense than the liquid phase. But water plays an exception and with this apparatus you can determine the temperature at which water attains its maximum density. LAWS & PRINCIPLES INVESTIGATED : • Determination of water maximum density at 4?C • Determination of sea water density maximum at 2?C.

To demonstrate that the maximum density of water is at 4DC. Comprises of cylindrical vessel of sheet metal mounted on a base and has an annular trough encircling about midway along its length, which is used for placing ice and salt mixture. Fitted with tubulures to carry thermometers and rubber stoppers

To demonstrate that the maximum density of water is at 4DC. Comprises of cylindrical vessel of sheet metal mounted on a base and has an annular trough encircling about midway along its length, which is used for placing ice and salt mixture. Fitted with tubulures to carry thermometers and rubber stoppers

To demonstrate that the maximum density of water is at 4DC. Comprises of cylindrical vessel of sheet metal mounted on a base and has an annular trough encircling about midway along its length, which is used for placing ice and salt mixture. Fitted with tubulures to carry thermometers and rubber stoppers.

Painted, with keeper, in plastic case. Specifications : Material: chrome steel Size: 10 x 5 x 0.5 cm.

Specifications : Material: ALNICO – Size: 3 x 3 x 1 cm. With keeper, painted red.

Painted red. Strong lasting power. Supplied in Board Boxes.

Painted red. Strong lasting power. Supplied in Board Boxes.

Painted red. Strong lasting power. Supplied in Board Boxes.

Painted red. Strong lasting power. Supplied in Board Boxes.

Chrome steel. with keepers, painted red. Optional. Wooden case.

Chrome steel. with keepers, painted red. Optional. Wooden case.

Chrome steel. with keepers, painted red. Optional. Wooden case.

Chrome steel. with keepers, painted red. Optional. Wooden case.

Chrome steel. with keepers, painted red. Optional. Wooden case.

A simple demonstration meter model that indicates the current flowing across its terminals on the basis of heating effects of current, i.e., demonstrates the heating effects of current. A resistance wire is fixed across two 4mm socket terminals mounted on insulated plastic base. Flow of current through the wire heats it that results in its elongation. This elongation is calibrated using a simple mechanism to move the pointer indicating the current flowing through resistance wire. Transparent acrylic window mounted on top provides clear view to its working. Clamping arrangement provided at the rear makes it easily mountable on a suitable retort stand for demonstration to a group of students.

For demonstration of the principle of hydraulic breaking system that operates on fluid pressure. It consists of a wheel with a handle for rotating it and hydraulically actuated breaking mechanism which is connected to cylindrical metal reservoir through a flexible pressure tubing. The plunger of the reservoir has a lever handle pivoted at its top for pushing it downward to apply pressure on the fluid inside, which is then forced through the connected tubing to actuate the braking mechanism. Complete apparatus mounted on a wooden base.

Working model made of glass. To show the concepts involved in its functioning.

Working Model made of glass mounted on wooden stand with trough for water. Provides convenient demonstration to a group of students

Working model made of glass. To show the concepts involved in its functioning.

Simple construction permits the use of water or even air for demonstration of the concepts involved. . Comprises a pair of graduated glass syringes of capacities 50 and 20cm3, both having finely ground pistons and provide a cross?sectional area ratio of 3: 1 respectively. Both the syringes mounted on a stable, non-skid sheet metal base with loading platform at their top and their nozzles linked to each other through a 3?position valve, by means of which they may be opened to the atmosphere, isolated or interconnected as desired. Both the pistons provided with limit-stop to prevent their complete ejection from the barrels. Thick wall of syringes makes it capable of withstanding pressures involved. The graduated syringe barrels also permit simple Boyle's Law experiments to be performed

For demonstrating the transmissibility of fluid pressure and to show how mechanical advantage may be obtained by using interconnected cylinder of different diameters. Two heavy walled glass cylinders having inner diameter 40 and 15mm respectively, both fitted with non-return valves and pistons, with piston of smaller tube connected to a hand lever for applying effort. Safety value provided in the large piston so that pressure in excess of that which can safely be applied to the glass cylinder enables the liquid to rise above the piston and escape through the overflow pipe at the top. Includes stopcock at the base of small cylinder for replenishing cylinders with water by means of rubber tubing from water source. Removable loading platform on top of large piston. Strongly constructed and mounted on wooden base board.