Timstar

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

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

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

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

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.

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.

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.

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.

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 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.

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.

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)

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

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

Suitable for Mamod steam engines. Supplied in pack of 20 tablets.

A twin cylinder stationary engine complete with generator and light.

Thermal conductivity apparatus for use witha tea light candle or small bunsen burner flame. The unit has an integral polished wooden handle and metal rods (aluminium, brass, mild steel, copper and nickel) mounted ina brass centre block. Students can discover which metals conduct heat the most efficiently by placing small amount of wax at the end of each rod and seeing which melts first when heat is applied to the centre block. Wax not included. Rod Dimensions (Dia. x L): 4 x 75mm.

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.

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

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

Conductivity rods, brass. Diameter 3 mm x 25 cm length.

Set of rods, one each of aluminium, brass, copper, and iron. Dimensions (L x Dia.): 250 x 3 mm.

These are safe, clean (no wax) and easy to use. The durable liquid crystal strips embedded in the bars show how a red zone of 40°C moves up the bars. The colours give a dramatic view of conduction and the marked difference in temperature gradients in the bars is also visible. By immersing the heated bars into cold water shows how conductivity applies to heat leaving the metal. The tops of the bars are designed to be touched with finger tip to reinforce the colour observations.

These are safe, clean (no wax) and easy to use. The durable liquid crystal strips embedded in the bars show how red zone of 40°C moves up the bars. The colours give dramatic view of conduction and the marked difference in temperature gradients in the bars is also visible. By immersing the heated bars into cold water shows how conductivity applies to heat leaving the metal. The tops of the bars are designed to be touched with finger tip to reinforce the colour observations.Class set of 12 in a Gratnells tray.

Five rods, one of each aluminium, brass, copper, zinc and iron, embedded along one side of metal tank. Rates of melting compared by placing wax on end of rods thus giving rates of conductivity in the different metals. Dimensions (L x W x H): 150 x 90 x 100mm.

The wood/metal cylinder offers a nice demonstration of conduction and insulation. The apparatus consists of a copper tube attached to a wooden rod of equal diameter. A piece of paper is wrapped tightly around the central section, covering the wood and metal parts, then the rod/cylinder is passed through a Bunsen burner flame for few seconds, making sure both wood and metal parts pass through the flame. The metal part conducts heat away so the paper hardly browns, but because the wood part is an insulator the paper covering gets scorched by the flame. Dimensions (L x Dia.): 190 x 22 mm.

Demonstrates the difference in conductivity of two different substances. Comprises two identical looking square blocks but of different materials, one of thermal conducting material and other of thermal insulating material. On placing ice on both of them, ice melts faster on one of them showing the difference in their conductivities.

This advanced ice melting kit nicely demonstrates the thermal conductivity of materials by using different types of metal blocks to melt ice cubes. The kit consists of an acrylic base with sump, an acrylic tube, two cylindrical copper blocks and two cylindrical steel blocks. The apparatus is set up by placing one of the copper blocks on top of the acrylic base. The base has an integral sump, which will contain the meltwater from an ice cube. The acrylic tube is then placed over the copper block, in order to contain the metal blocks and ice cube. An ice cube is then dropped down the tube onto the block and the second copper block is placed on top. Immediately the ice begins to melt, due to the high thermal conductivity of copper (along with large thermal mass), and in matter of 10-15 seconds the ice will have melted and disappeared. By repeating the experiment using the steel blocks it can be seen that the ice melts more slowly, due to the lower thermal conductivity of steel. Each experiment can be timed, for more accurate comparison between the two different metals. The kit also includes two plastic insulating discs, which can be placed between the ice and the metal blocks to show that it is not simply the pressure of the top block which is causing the ice to melt. If repeating the experiment using the same blocks, it is better to allow the blocks to come back up to room temperature first (if repeatable results are required). Contents: • Acrylic base and tube • 2 x 0.5 kg copper blocks • 2 x 0.5 kg steel blocks • 2 x plastic insulating discs Also required: Ice cubes, preferably quite large.

This apparatus offers quick and safe method for demonstrating comparative heat absorption from radiated heat source. The apparatus uses a 12 V 24W bulb as heat source, with parabolic metal dishes for heat absorption one finished in black and one in shiny metal. The dishes include integral holders for thermometers, to allow comparison of temperature readings (thermometers not included). Comes complete with instructions.

A safe, compact heat source, ideal for heat radiation experiments in schools. Comprising a base and cage enclosing a custom IR radiating lamp of the dull emitter type. • 300 W power output • Dimensions (W x D x H): 150 x 150 x 220 mm

A 10 cm cube with surfaces: dull black, shiny black, white and copper. The opening on top allows the cube to be filled with hot water, and the lid reduces both heat loss and the risk of spillage.

Aluminium discs each with different durable anodised finish-matt black, mirror black, matt silver and mirror silver. Bonded to the reverse of each disc is 30-650°C liquid crystal thermometer. These discs show in a clear and measurable way how absorption of heat radiation depends on surface colour and texture. The very low heat capacity gives quick results, meaning that many more experiments can be completed in each lesson. The discs can be used to investigate rates of cooling, the effects of filters and reflectors, inverse square law and equilibrium between absorption and emission. Supplied with a holder and storage box.

A novel way to investigate temperature, insulation, and body temperature. Heat sensitive thermochromic paper changes colour as the temperature rises, even from the heat of your hand. The paper is supplied in four colours blue/white, purple/pink, pink/white and green/yellow. Dimensions (L x W): 297 x 210 mm.

This wind turbine can be used to carry out wide range of experiments on wind power. The blades of the wind turbine can easily be attached, removed or adjusted, allowing students to investigate the effects of changing the number, pitch, size and shape of the blades. Some of the effects can be quite counter-intuitive and require students to think carefully about the concepts of energy and power. With mm sockets attached for easy connection to other equipment, the electrical output is DC. Assembly required. Contents: generator assembly 1, support post 1, turbine hub 1, turbine blade posts 6 and turbine blades 6.

Wind is one of the most promising sources of clean, renewable energy available today. Wind energy has been used for centuries to pump water and crush grain in windmills, and is now increasingly being used to generate electricity to power our modern world. Using this kit you can assemble a wind turbine complete with electric generator, adjustable rotors, and wind speed indicator, then conduct more than 20 experiments with your wind turbine. Experiment with different numbers of rotor blades, different blade angles and profiles, different wind speeds, different gear ratios etc. Use the wind turbine to generate mechanical power to lift heavy weight or generate electricity to light up an LED and charge rechargeable battery. Includes full-colour, 32-page experiment manual with illustrated instructions and scientific information. • Build working wind turbine • Harness mechanical energy to lift weights • Generate electricity to light an LED and charge battery • Learn the physics of wind turbines • Discover how wind occurs and why it is such promising energy source • Learn about the physics of force and motion as it applies to wind power technology. • Learn how to measure and calculate the different forces acting on the rotor blades by breaking them down into vectors • Discover how the sun makes the wind, providing us with an endless source of energy • Read about different types of wind turbines and windmills

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

A robust bathroom scale, calibrated in Newtons.

Apparatus for demonstration of Newton's 3rd law of motion which says that action and reaction are equal and opposite. The device is suitable for demonstration of momentum conservation. Dimensions: 124 x 110 x 153 mm. Ball diameter 20 mm.

This battery powered air puck can be used for 'frictionless' demonstrations, in similar way to the carbon dioxide (dry ice) pucks which used to be available. It is also fun way to play 'air hockey' on any flat surface. Two discs can be used together for demonstrating collision between objects. With its powerful hover action, the air powered soccer disc literally floats on cushion of air. The disk has soft outer rim to prevent damage as well as improving rebounding from any object it collides with. Can be used indoors or out. Requires x AA batteries (not included). Dimensions: 180 x 180 x 60 mm.

This flexible plastic ramp can be used to create slopes and curved tracks for use in dynamics experiments. Designed for use with small vehicles, the ramp comes with side rails to contain the vehicles. Tracks can be connected together by unscrewing an endplate and joining to another track. Dimensions: Track runway length 1.2 metres; Usable width of track 95 mm.

Operates at 6 V AC and produces dots on the tape using carbon paper disc at an electronically controlled frequency of 50 Hz. The unit is housed in rugged ABS case. Supplied with 40 mm carbon paper discs and 15 mm wide ticker tape.

Ticker Tape, 30 m x 15 mm for Ticker Tape Timer FO81625.

This timer is very robust and features an adjustable spring loading mechanism to ensure suitable ticker tape markings. Operates at 12 V AC. providing 50 Hz. Uses 50 mm dia. carbon discs and 9.5 mm wide tape.

Ticker Tape, 30 m x 9.5 mm for Ticker Tape Timer FO81650

Carbon Paper Discs, 50 mm diameter, for Ticker Tape Timer FO81650.

Designed to provide a smooth, flat, easily inclinable surface for dynamics experiments using trolleys. Complete with wooden side rails and plastic feet.

Designed to provide a smooth, flat, easily inclinable surface for dynamics experiments using trolleys. Complete with wooden side rails and plastic feet.

A pair of identical wooden trolleys mounted on low-friction wheels with spring plungers. The trolleys may be stacked on top of each other by the use of pins (supplied). Dimensions (L): 300 mm. (Wgt) 526 g

These unique precision Dynamics Carts are ideal for all basic dynamics experiments. Strong and rigid, they can take the weight of an adult without bending or breaking. They can be loaded with house bricks or similar weights for velocity, acceleration and collision experiments. Each cart is complete with firing button and 2 position spring loaded firing shaft with safety locking device to prevent accidental firing. These carts run straight and true and the wheels are of low mass and low friction. Each is accurately calibrated to be 600 g and are stackable. The approximate dimensions of the body are (LxWxH) 300 x 130 x 90 mm. Supplied as pair.

The Force Board is a good way to introduce students to Newton's Laws and vector addition, demonstrating the principles of the parallelogram and polygon of forces. The board, pulleys and masses (all included) allow for easy set-up of equilibrium conditions and consequent measurement of the forces involved. The background grid helps to visualise the direction of force and thereby to calculate the resultant vector. The back board is bench-standing and hard-wearing, with printed background grid, and has detachable feet for easy storage. The set includes ball bearing pulleys, three hooks, thread and mass set. Board dimensions: 400 x 550 mm (W x H)

For demonstrating the composition of force and for determining the coefficients of friction between different materials. Comprising of a wooden base, hinged inclined plane and pulley. Angles can be set between 24 and 45 degrees approx. Supplied with cylindrical metal roller and scale pan. Dimensions (L x W x H): 600 x 75 x 19 mm.

A simple and economical way to demonstrate the geometrical centre of gravity of two-dimensional objects, this apparatus comprises clear Perspex rod mounted on base, with a suspension screw at the top and four clear acrylic shapes circular, triangular, square and trapezoid. Each shape has suspension holes at various points around the edges. The point of intersection of lines drawn vertically down from the suspension point of or more holes gives the centre of gravity for each shape. For non-permanent markings, lines can be drawn using dry-wipe pens or similar.

This durable Projectile Launcher, of aluminium construction with hardened steel latches, has a string release trigger mechanism with 2 bore sights and pivots from horizontal to 90°. It comes with a 19 mm diameter ball which is easy to place in the launch position. Trajectories vary less than 1 cm because the ball does not spin when launched. The apparatus includes an assembled spring loaded gun, two balls of aluminium, an integral protractor and plumb line and comes complete with operating instructions. Weight: 1.74 kg. Dimensions (L x W x H): 400 x 100 x 180 mm.

This premium apparatus, from Frederiksen, allows accurate and reproducable free fall experiments to be carried out. The release mechanism at the top sends a start pulse to the timer when the ball is released, and a stop pulse is generated when the ball hits the contact plate at the bottom. • Connections via standard 4 mm safety connectors • No external power supply required so no risk of overheated coils • Four gold-plated steel balls and a ping-pong ball with metal thumb tacks included • Includes mirror to minimize parallax errors Requires separate timer (FO140110), stand and cables (not included).

This high quality timer, from Frederiksen, is particularly suitable for experiments such as 'g' by free fall and speed of sound, as well as other experiments where accurate timing is required. Inputs are via DIN 6 pole connectors (for Frederiksen photocells and microphones) or 4 mm safety sockets (for free fall experiments or other equipment). Compatible with the following equipment: • SO150400 microphone • TI170200 photogate • TI170100 speedgate • FO140105 freefall apparatus • Range: 0.03 ms to 27 hours • Resolution: 0.01 ms • digit LED display with floating decimal point • Manually controlled stopwatch option • Accepts start and stop signals from microphones, photocells or any on/off switch connected to the mm sockets • Power: 6 x AA batteries or mains adapter (included)

This simple but effective apparatus demonstrates that two projectiles launched at the same time, but with different trajectories, will hit the ground at the same time due to the force of gravity. In this case, one steel sphere is launched horizontally from spring-loaded L-shaped arm at the same time as an identical steel sphere is allowed to fall freely from the same height, but vertically. Both spheres will hit the ground at the same time. Launching mechanism is mounted on wooden block, which can be clamped to bench top, and comes complete with 2 steel spheres. The wooden block also incorporates an integral storage pocket for the spheres. Dimensions: 180 x 60 x 30 mm.

This fun and useful apparatus helps to demonstrate the 'Monkey and Hunter' experiment, to show how gravity affects projectile motion. The apparatus consists of a projectile 'gun' which fires a ping pong ball ('bullet') and model animal ('monkey') on an electromagnet release mechanism. The monkey is released at exactly the same time as the ball is fired, so should the gun be aimed directly at the monkey or just below it to allow for the distance it falls? Theory and practice will show that the gun should be aimed directly at the monkey, as both ball and monkey will fall at the same rate due to gravitational force.

Spare monkey for FO71860.

Spare solenoid and PCB for FO71860.

A solid metal sphere with small hook.

A solid metal sphere with small hook.

A solid metal sphere with small hook.

A solid metal sphere with small hook.

A solid metal sphere with small hook.

Apparatus to show the equality of acceleration under gravity between light and heavy objects in the absence of air resistance. Comprises a 100 cm acrylic tube with bungs at either end. A valve with a stopcock at one end allows a vacuum pump to be attached, and the air evacuated from the tube. Inside the tube is a coin, and a piece of paper (various laws prevent supply of a feather for this apparatus). When air is in the tube, the coin falls quickly but the paper is subject to air resistance and falls more slowly. With the air evacuated, the only force acting is gravity, so the two fall at equal rate, despite the difference in weight. The famous experiment on the Moon with hammer and feather can be seen here: http://timstar.co/HammerFeather

Self-contained apparatus for study of moments. Comprising high-quality aluminium stand, metre rule, three knife-edge sliders with hooks, two mass hangers, eight slotted masses 1-500 g, and storage rack. No additional apparatus such as retort stands required, and can be set up in 'moments'. Additional knife-edge sliders can be purchased if required. (FO180002)

Knife edge clamp for moment of force apparatus (FO180000). Ruler not included.

The balancing beam kit contains 5 sets of pre-drilled wooden beams with a central pivot and brass hooks to slot into the holes. The brass hooks are used to support slotted masses (not included) and the pivot is clamped into a retort boss head for support. Contents: 5 each of balance beams and pivots plus 10 brass hooks; enough for 5 groups or individual students.

This levers kit contains 5 sets of levers and accessories for students to investigate levers and moments. Each set includes a lever with precisely placed pre-drilled holes mounted on a plastic saddle, pivot rod and mounting base, along with 10 g mass carriers which slot into the lever holes. Each set requires a set of 10 g slotted masses (not included). Contents: 5 x lever kits.

The air track measures 1.2 metres and is made from high strength 56 x 56 mm extruded aluminium. Includes instruction manual and accessory kit which enables investigation of: • Velocity • Force and acceleration • Potential energy • Kinetic energy • Conservation of energy • SHM • Motion on level and inclined planes

Air track blower suitable for use with the compact linear air track FO150710. Please note this blower is not powerful enough for larger air tracks.

A precision machined, metre linear air track, of lightweight yet durable aluminium extrusion construction. The length is drilled with holes, such that when attached to blower, near-frictionless surface is created. The track rests on three adjustable feet, so it can be made perfectly horizontal with respect to gravity. The kit includes set of accessories for wide range of investigations: • 2 sliders • 10 bolt and wing nuts • 4 spring attachments • 4 spring/string attachments • 4 springs • 2 Velcro attachments • 2 pulleys, strings • 4 slotted masses hanger • 8 photogate flags • 2 photogate arms • 1 latching cradle/bumper • 4 masses for the sliders • Assembly instructions experiment guide Air blower FO180615 sold separately.

A blower specifically for the FO180610 air track.

A superb quality air track made from square section aluminium extrusion with supporting ""U"" channel. Linearity is +/- 0.03 mm. Suitable for elastic and inelastic collisions, momentum, speed and acceleration measurement. The track rests on three rubber feet, two of which can be adjusted. Each side has scale graduated in mm. The track is supplied with two carts and a standard accessory set. Additional accessories available on request. Dimensions (L): 2 metres. Standard Accessory Set contains: • Fork with plug connectors (3) • Holder with plate and plug connectors (3) • Holder with needle and plug connector (1) • Tube with wax and plug connector (1) • Holder with hook and plug connections (1) • 25 and 100 mm Apertures with plug connectors (1) • Weights 50 g for carts (4) • Pulley with connectors (1) and carts (2).

Standard Accessory Set contains: • Fork with plug connectors (3) • Holder with plate and plug connectors (3) • Holder with needle and plug connector (1) • Tube with wax and plug connector (1) • Holder with hook and plug connections (1) • 25 and 100 mm Apertures with plug connectors (1) • Weights 50g for carts (4) • Pulley with connectors (1) and carts (2).

Spare cart for the Frederiksen linear air track, TI68740.

Extremely quiet air blower with continuously adjustable speed for use with the premium air track TI68740. Complete with 1.7 metre hose. Mains supply: 220-240 V AC. Mass: 5.7 kg. Dimensions (L x W x H): 280 x 250 x 210 mm.

Economical but good quality slotted mass set made from coated steel alloy. Set comprises 1 x 100g mass hanger plus 9 x 100g masses. Tolerance ±5%.

Economical but good quality slotted masses made from coated steel alloy. Set comprises 5 x 100g masses. Tolerance ±5%. Hanger not included.

Economical but good quality mass hangers made from coated steel alloy. Set comprises 5 x 100g mass hangers.Tolerance ±5%. Masses not included.

Iron, with ring.

Iron, with ring.

Slotted. Circular with hole and slot % tolerance.

Slotted. Circular with hole and slot 1% tolerance.

Slotted. Circular with hole and slot 1% tolerance.

Slotted. Circular with hole and slot % tolerance.

Brass masses made to 1% tolerance.

Brass masses made to 1% tolerance.

Brass masses made to 1% tolerance.

Brass masses made to 1% tolerance.

Brass hangers made to 1% tolerance.

Brass hangers made to 1% tolerance.

Brass hangers made to 1% tolerance.