Energy

This demonstration model facilitates the understanding of how dynamo works, thanks to the open and exposed design. A mounted armature, comprising two coils of copper wire, is rotated about horizontal axis by turning the hand cranked drive wheel within magnetic field, created by the permanent U-magnet supplied with the unit. Mounted on plastic base with LED and two mm sockets for connection to measuring instruments. Drive Wheel Dimemsions (Dia.): 140 mm. Base Dimensions (W x L): 150 x 200 mm.

This unit can be used for variety of purposes to illustrate energy transfers: it can be used to lift mass or stretch bungee cord, and to generate an electrical current when the mass falls again or the bungee cord is released. It can also be turned by hand to generate current. The motor/generator (6-9 V) is mounted on robust metal base, and the gearing of the unit and the sizes of the pulleys have been chosen to enable variety of qualitative and quantitative experiments to be undertaken.

A hand driven pulley coupled to the smaller dynamo pulley by a rubber belt to give step-up ratio, to generate both AC and DC. Electrical output is via 2 pairs of 4 mm sockets (AC and DC) and two LEDs.

Belt for demonstration dynamo AC/DC HE53710.

This self assembly motor kit is very robust and clearly demonstrates the constituent parts of DC motor.

A model of the simplest form of DC electric motor, having 2-pole armature wound with enamelled copper wire, and permanent magnetic field provided by removable bar magnet. The construction of the model is completely open and all components are readily observable. A disc-type commutator is incorporated and external connection to the phosphorous bronze bushes is by means of a pair of 4 mm sockets. The motor operates on 6-8 V DC.

This demonstration motor comes ready assembled, with an open construction which clearly shows the design working parts of a simple motor. The motor is mounted on a robust wooden base with acrylic end plates with 4mm sockets and comes complete with ceramic magnets and yoke. Requires 1 -3 Volt DC laboratory power supply (not included). Overall Dimensions (L x W x H): 125 x 75 x 60 mm.

For experiments on specific heat capacity, cylindrical with 13 mm diameter central hole to accept immersion heater and off-set hole for thermometer. Mass of each block approx. 1 kg.

For experiments on specific heat capacity, cylindrical with 13 mm diameter central hole to accept immersion heater and off-set hole for thermometer. Mass of each block approx. 1 kg.

For experiments on specific heat capacity, cylindrical with 13 mm diameter central hole to accept immersion heater and off-set hole for thermometer. Mass of each block approx. 1 kg.

For experiments on specific heat capacity, cylindrical with 13 mm diameter central hole to accept immersion heater and off-set hole for thermometer. Mass of each block approx. 1 kg.

A novel design that fits into the top of polystyrene or paper cups. A 2.2 Ohm heating element can be powered from a low voltage supply via the 4 mm sockets in the cap. A hole in the top allows thermometer to be inserted. Ideal for energy transfer, power and specific heat experiments. Diameter: 65 mm. Height: 75 mm.

Insulating covers made from white PVC to fit calorimeters. Each cover has a central hole for a thermometer and a smaller hole for stirrer.

Insulating covers made from white PVC to fit calorimeters. Each cover has a central hole for a thermometer and a smaller hole for stirrer.

Thick sleeves and base mat to fit calorimeters.

Thick sleeves and base mat to fit calorimeters.

With parallel sides and rolled rim. 50 mm diameter x 75 mm height.

Suitable for calorimeter blocks. 50 W fully sheathed 12 V 5 A AC or DC heater with 4 mm sockets. Dimensions (Dia. X L): 12.5 x 100 mm.

With parallel sides and rolled rim. 50 mm diameter x 75 mm height.

With parallel sides, rolled rim and thicker than average walls.

The generator is mounted in transparent plastic housing. Using a handle and exchange gear, the generator can yield power output of up to 7.5 watts. The generator unit is supplied with an E10 socket for small bulbs and leads with mini crocodile clips for attachment to electrolysis experiments, measuring instruments, electrical circuits, etc. The set consists of two hand generator units (complete with bulb, cable and mini crocodile clips) and includes complete user instructions and a spare bulb.

Developed for the Science Enhancement Programme (SEP) this single unit demonstrates range of different energy transfers; for example, how energy is transferred electrically from hand-turned dynamo to motor. The unit is accompanied by booklet that discusses some of the key teaching and learning issues that surround the energy concept, and provides series of activities that illustrate how the unit can be used to develop simple and coherent ways of talking about energy.

For showing the conversion from electrical energy via mechanical to potential energy by winding up weight on cord. One end of the 6 mm steel shaft carries an aluminium 'V' pulley 56 mm diameter and the other end is fitted with cord anchoring collar. Base size 15 x 20 cm.

This is small low consumption electric motor on base specially designed to run directly from the output of the solar cell and to illustrate the direct conversion of light energy to electrical and hence to mechanical.

For use with the motor to demonstrate the production of electrical energy directly from light energy. The apparatus comprises aselenium photo-voltaic cell.

For use as driving unit /dynamo. Comprises - 6 V D.C. motor provided with 15 mm diameter 'V' pulley. Base size 15 x 10 cm.

With parallel sides, rolled rim and smoothed internal side walls. 75 mm diameter x 100 mm height.

With parallel sides, rolled rim and smoothed internal side walls. 50 mm diameter x 75 mm height.

With parallel sides, rolled rim and thicker than average walls.

The 'Singing Pipe' apparatus is a simple, effective and entertaining way to demonstrate energy conversion from heat (thermal energy) to sound energy. Quick and easy to set up and use, this demonstration rarely fails to impress. The apparatus consists of a 450 x 28 mm copper tube which has a metal gauze fitted inside, at pinch point part way up from the base. The tube should be supported by a retort clamp towards the top, away from the heat, and blue Bunsen burner flame directed into the base and onto the gauze for few seconds only. Shortly after removing the flame, the tube emits loud 'foghorn' sound as air is drawn up the tube by heat rising from the hot gauze. If the tube becomes too hot it will stop emitting sound, in which case it should be allowed to cool before trying again.

An affordable Stirling engine which works at very low temperature differences. A cup of warm water (must be at least 60 °C) can make the motor run, which means that water heated by sunlight can become hot enough to drive this motor. Like other Stirling engines, this type works by converting temperature differences into mechanical energy as warm air expands and cold air contracts. This is utilized in closed system where the same air is pumped back and forth between cold and hot engine part. Illustrates perfectly how Stirling engines operate and can be used with many different heat sources. Weight: 330 g. Dimensions (H x W x D): 144 x 90 x 90 mm.

A kit comprising 8 solar modules, low-inertia motor, impeller, connecting lead and copper links for cell interconnections and housings and brackets to enable the construction of various solar powered projects. The modular concept of this kit enables experimentation with differing voltages and currents to produce the required circuit. The kit also includes comprehensive booklet covering principles of solar power, together with useful connection diagrams and output calculation formulae.

A functional glass model of the earliest form of steam turbine. Comprising borosilicate glass bulb 70 mm diameter, with side arms bent at right angles and formed into jets at their tips. The bulb is carried upon a metal stand which leaves it free to rotate about its horizontal axis. With 25-30 mL of water put into the bulb and boiled, the increased pressure ejects steam, which causes rapid rotation as per Newton's third law. Supplied complete on stand but without burner.

Spare glass bulb for Hero's Engine, HE180500.

Solar panel consisting of 36 monocrystalline solar cells mounted in an aluminium frame with front glass panel. Complete with shrouded 4 mm plug leads. • Maximum output: 18.0 V / 0.58 A • Open-circuit voltage: 22 V • Short-circuit current: 0.6 A • Dimensions: 383 x 299 x 34 mm

Fitted with threaded stud terminals. Output 0.45 V. May be fitted together for increased power. 400 mA. 75 x 45 x 7.5 mm (L x W x H)

Consists of a metal box with a sliding glass front and two detachable glass chimneys. A lighted tea light (night light) is placed beneath the base of one chimney to create convection currents. (Tea lights not supplied). Dimensions (L x H x D): 240 x 90 x 70mm.

Spare chimneys for Convection in Air Apparatus, HE18736.

Consisting of rectangular glass tubing. Dimensions (W x L x Dia.): 210 x 360 x 22mm.

This apparatus vividly demonstrates the rise in temperature that occurs when a fixed mass of air in a transparent cylinder is compressed by a hand operated piston. A piece of tinder, which is provided, ignites in the transparent cylinder: much as a diesel engine obtains ignition. The cylinder and piston can also be used to demonstrate the effect of decompression, being the immediate lowering of temperature and the consequent condensation of water vapour inside the cylinder the cloud formed can easily be seen. Cylinder Dimensions: (L) 198.00 mm (OD) 15.00 mm (ID) 9.00 mm

Spare cylinder for Hyman Fire Piston, HE43250.

Spare Tinder for Hyman Fire Piston, HE43250.

Two-piece set. Brass ring and brass ball mounted in wooden handles. Dimensions (L): 260 mm.

An improvement on the riveted version, this bonded copper and steel bimetallic strip comes mounted in a wooden handle for ease of use. Heating on either side causes the strip to bend as the two metals expand by different amounts. Comes with instructions. Dimensions (L incl. handle): 300mm); Bimetallic Strip (L x W) 200 x 13 mm.

Developed with the National Energy Foundation, this quality, easy to use Wind Turbine Kit is a working model of a real wind turbine. Hands-on and fully interactive, the kit shows how wind power can be harnessed to generate electricity. The kit can be assembled in minutes, is easy to use and has been designed for use in schools, colleges and universities. The wind turbine can be used indoors with a fan, or outdoors in the wind to power the electric motor, buzzer or LED, or can be connected to the voltmeter to measure the amount of electricity generated. The rear vane automatically turns the wind turbine towards the wind, even if the wind changes direction. The turbine hub offers combinations of two, three or six blades and the blade angles can be easily adjusted to discover which configuration gives the greatest electrical output. The kit includes a set of four gears which can be easily interchanged to test different gear combinations e.g. ratios of 3:1, 1:1 and 1:3, to discover what effect this has on the power generated. Packed weight: 1.29 kg The kit contains: • Two-part wind turbine (600 mm high) consisting of nacelle (top), and tower (base) • Integral clamp to secure the wind turbine to table top or bench etc. • Six turbine blades • Motor module • LED module • Buzzer module • Dual-scale analogue voltmeter • Brass-hub gears: 60-tooth, x 40-tooth, and 20-tooth with 1.5mm hex key • Operating and assembly instructions • Cardboard storage case

Consists of four metal strips (aluminium, brass, copper and iron) mounted on a wooden ring. The outer end of the strips are formed into small cup to contain wax. Suitable for use with a small bunsen flame or tea light/candle.

Conductivity rods, aluminium. Diameter 3 mm x 30 cm length.

Fitted with threaded stud terminals. Output 0.45 V. May be fitted together for increased power. 400 mA. 75 x 45 x 7.5 mm (L x W x H)

A powerful compact engine capable of driving workshop models. Uses solid fuel tablets.

A versatile unit capable of driving larger models. Uses solid fuel tablets.