Physics
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Mechanics
Bernoulli Tube
To investigate the relationship between the speed of a fluid and its pressure. Consists of a glass Venturi tube with two different diameters. One pair holds a U-shaped tube in which a color liquid can be placed to demonstrate the different pressures exerted when air is blown through the tube. It includes two rubber tubes and glass Venturi tube fitted on stand.
PH10636N -
Mechanics
Smoke Cell
Smoke cell is an apparatus used for the observation of Brownian motion in smoke particles. It comprises a box with plastic lid as well as flanges to be used with a microscope. The box consists of a smoke cell and a cylindrical condensing lens. Illumination is provided by a 12 volts 3 watt festoon bulb. Apparatus is pre-set to focus the light at correct height. The dimensions of the apparatus are 90 x 46 x 20 mm. The set is supplied with a squeeze bottle type smoke generator and user manual.
PH10650B -
Mechanics
Surface Tension Balance Searle’s
A horizontal frame is mounted on a rod fitted to a base & carries a steel wire stretched across it, the tension of which can be adjusted by a tightening screw. A lightweight metal pointer with a counterpoise is attached to the centre of the wire by a clamp. A pan is hung from a notch in the pointer and has a hook at its underside from which can be suspended a lightweight rectangular frame or a metal clip to hold a micro slide edge. The tip of the pointer moves over a graduated scale. With rectangular wire frame, slide clip, six micro slides and 3 meters of spare wire.
PH10705 -
Heat
Magdeburg Pressure Disks
The set consists of two plastic, 10cm-diameter hemispheres. Each half has a wooden handle firmly attached to it. One of the hemispheres has a raised edge to hold a rubber seal, while the other hemisphere has a stopcock for attaching to vacuum tubing. Join the hemispheres, hook them up to a vacuum pump, and evacuate the air inside the hemispheres. You will find it hard to pull them apart. Open the stopcock to let air in and the hemispheres will separate easily.
PH12184 -
Heat
Linear Expansion Apparatus, Micrometer Screw Form
A 500 mm long metal rod is supported in a plated brass tube with three tubules for steam inlet, outlet and thermometer. The tube is mounted on a stand with an adjusting screw at one end and a micrometer screw reading to 0.01 mm on the other, with terminals for connecting a bell or galvanometer to indicate contact. With copper, brass and iron test rods but without thermometer.
PH20044 -
Heat
Expansion Apparatus
Two cast metal uprights, height 18 cm, fitted with two nickel-plated rods supporting expansion bar of length 38 cm. Expansion bar is fixed to one upright and moves a pointer on the other, when heated. With scale reading 0 to 90°, supplied with one each, aluminium, brass and iron expansion bars.
PH20045 -
Heat
Pyrometer
Fitted on a wooden base cast metal uprights and rod mountings. A 20-0-20 scale is provided to notice the expansion in rods. The counterweighted needle is used for easy reading. A knurling screw is provided for zero adjustment. Supplied with three metal rods one of each Aluminium, Brass and Steel.
PH20045N -
Heat
Linear Expansion
A high-quality apparatus to determine precisely co-efficient of expansion of various metals. An aluminium channel carries a 60 cm long metal rod enclosed in a heating jacket having three nipples for water intake, water outlet and thermometer insertion. Dial indicator is a precision instrument sensitive to 0.01 mm/division and is securely mounted. As the apparatus works with hot water, there is no danger from any steam escaping and causing burns on the skin. Complete with four expansion rods of steel, brass, copper and aluminium.
PH20047
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