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LIFT PUMP, MOUNTED (0044)
Working Model made of glass, similar to PHYSICS 0043 but mounted on wooden stand with trough for waterProvides convenient demonstration to a group of students
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FORCE PUMP MOUNTED BOROSILICATE GLASS (0047)
Working Model made of Borosilicate glass, similar to PHYSICS 0046 but mounted on wooden stand with trough for water. Provides convenient demonstration to a group of students. Made of Borosilicate glass, similar to PHYSICS 0046 but mounted on wooden stand with trough for water. Provides convenient demonstration to a group of students.
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FORCE PUMP MOUNTED NEUTRAL GLASS (0047)
Working Model made of Neutral glass, mounted on wooden stand with trough for water. Provides convenient demonstration to a group of students.
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HYDRAULIC PRESS BRAMAH BOROSILICATE GLASS (0048)
Working model made of glass. To show the concepts involved in its functioning.
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HYDRAULIC PRESS BRAMAH NEUTRAL GLASS (0048)
Working model made of glass. To show the concepts involved in its functioning.
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HYDRAULIC PRESS BRAMAH MOUNTED (0049)
Working Model made of glass mounted on wooden stand with trough for water. Provides convenient demonstration to a group of students
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HYDRAULIC PRESS WOODEN BASE (0050)
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.
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HYDRAULIC PRESS SYRINGE TYPE (0051)
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
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FLUID PRESSURE APPARATUS (0052)
Demonstrates the phenomenon, of transmissibility of fluid pressure. For the same force exerted, pressure is inversely proportional to the surface area. The apparatus comprises of the plated brass cylindrical tubes of different diameters, each fitted with piston and connected to each other through a brass tube at their bottom. Pistons have circular disc at the top for loading masses (masses not includedJ. Complete apparatus mounted on a wooden base.
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HYDRAULIC BRAKE (0053)
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.
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OIL FILM KIT (0054)
For investigation of surface tension phenomena and other related concepts Enabling the estimation of molecular sizes of oil to close approximation using an oil film of water so as to make an investigation into the order of atomic size. The kit has been designed to provide essentially for the needs of two students working together. It comprises of following components. i) Plastic Trays with raised edges and drainage hole- 2 Nos. ii) Rubber bungs for sealing drainage hole of trays - 2 Nos. iii) Surface wiping metal booms for leveling surface of paraffin wax iv) in tray - 4 Nos. v) Leveling Wedges for adjusting the tray level- 8 Nos. vi) Mounted Wire Loops -16 Nos. vii) Plastic Graticules, calibrated along one edge at the center for mounting in special holder when preparing oil drops - 8 Nos. viii) Special holder to facilitate preparation, selection and measurement of oil drop, comprising wooden block fitted with clips to accommodate to mounted wire loop, graticule and hand lens-8 Nos. ix) Olive Oil- 25ml x) Beakers - 8 Nos. xi) Lycopodium Powder-25g xii) Dispensers for Lycopodium powder - 2 Nos. xiii) Camphor - 2 Nos. xiv) Paint Brush -1 No. xv) Vessel for melting Paraffin Wax -1 No. xvi) Paraffin Wax - 500g xvii) Sponge to deal with the spillages - 2 Nos.
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SURFACE TENSION BALANCE SEARLE'S (0055)
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.
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BOYLE'S LAW SIMPLE FORM (0056)
A simple and economical apparatus for demonstration of Boyle's law to a fair degree of approximation. Consists of a graduated plastic syringe mounted on wooden block and a lubricated piston of the syringe mounted to another wooden platform that capable of holding various weights. When loaded with different masses, piston compresses the air inside syringe increasing the pressure and corresponding volume can be read directly from syringe graduation.
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BOYLE'S LAW APPARATUS LOW PRESSURE (0057)
Demonstrates the relationship between pressure and volume of a given mass of gas at a fixed temperature, i. e., Boyle's Law. Consists of two glass tubes ?one having both ends open and the other having one end closed. Both the tubes are mounted on vertical support rods with the help of sliding brackets that can be positioned anywhere along the length of the rod and are connected to each other through a flexible pressure rubber tubing. A meter rule graduated 0-100cm x 1 mm, reading in both directions present between the two support-rods on a wooden back- plate and facilitates level reading in both the tubes. Complete apparatus mounted on a stable cast-metal base with leveling screws. Requires mercury for use, not included (available optionally).
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BOYLE'S LAW APPARATUS ALUMINIUM EXTRUSION (0058)
Demonstrates the relationship between pressure and volume of a given mass of gas at a fixed temperature, i. e., Boyle's Law. having bottom zero scale fixed to a specially designed aluminium extrusion having rectangular cross-section in place of wooden back-plate. Sliding brackets with both the glass tubes sliding vertically on the slot on either side of extrusion instead of metal support rods. Requires mercury for use, not included (available optionally).
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