Timstar

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.

Brass hangers made to 1% tolerance.

Each hanger will hold up to 17 masses of 1kg.

Iron mass, 1 kg.

Iron mass, 500 g.

Slotted alloy masses. Tolerance ±2 %. Sets comprise masses and hanger of equal mass.

Slotted alloy masses. Tolerance ±2 %. Set comprises masses and hanger of equal mass.

Slotted alloy masses. Tolerance ±2 %. Set comprises masses and hanger of equal mass.

Slotted alloy masses. Tolerance ±2 %. Set comprises masses and hanger of equal mass.

Slotted alloy masses. Tolerance ±2 %. 100 g mass.

Slotted alloy masses. Tolerance ±2 %. 50 g mass.

Slotted alloy masses. Tolerance ±2 %. 10 g mass.

Slotted alloy mass hanger. Tolerance ±2 %. Masses not included.

Slotted alloy mass hanger. Tolerance ±2 %. Masses not included.

50 mm diameter aluminium wheels in metal frames, accurately centred.

50 mm diameter aluminium wheels in metal frames, accurately centred.

50 mm diameter aluminium wheels in metal frames, accurately centred.

Cone bearing pulley mounted in an aluminium boss and clamping screw. Fits all standard retort rods. Pulley Dimensions (Dia.): 50 mm. Boss Dimensions: 100 x 20 x 20 mm (L x W x D)

Pulley mounted in robust frame with two clamping screws for mounting onto bench up to 38 mm thick or standard retort rod. Dimensions (Dia.): 70 mm.

Pulley mounted in metal frame. Suitable for clamping to bench, table etc. up to approx. 30 mm thick. Dimensions (Dia.): 50 mm.

The kit makes use of an empty 1 or 1.5 L plastic bottle. The special cap, nozzle and fins supplies are attached to the bottle. An air tube and adapter are supplied to connect the bottle to cycle pump. The bottle is part filled with water and air pumped into the bottle. The pump connector on the bottle releases at set pressure and the rocket is then launched. The rocket will reach height of approximately 20 metres. The bottle and cycle pump are not supplied, all spares available. Complete with full instructions.

Spare white cap and 'O' ring for Water Rocket Kit RO12950.

Spare red fin (1 only) for Water Rocket Kit RO12950.

Spare black nozzle for Water Rocket Kit RO12950.

Design and make your own realistic rockets and launch them safely to heights of up to 100 metres. The rockets are made by rolling paper around a plastic tube and attaching a plastic nose cone. They are propelled using an electrically-controlled compressed air launcher which gives near-chemical performance but at zero cost per launch. Provides opportunities for exploring basic rocket science enhancing subject teaching in design and technology, science and maths. Contains launcher and key switch 'firing' unit. Uses any cycle or car foot pump (not supplied) and requires alkaline PP3 batteries. Please note: packs of plastic nose cones are available separately.

A pack of assorted coloured soft plastic nose cones to fit rockets made with the 21.5 mm diameter mandrels.

To fit the 21.5 mm diameter launch tube of the Rocket Factory.

This Circular Motion Apparatus comprises small DC motor mounted at the end of suspension rod and includes three different rubber balls with suspension chains. For demonstrating the laws of uniform circular motion. Instructions included.

This rotary investigation apparatus allows students to explore all aspects of rotary motion in a simple but effective way. The apparatus can be used to demonstrate: rotary motion; centripetal force; orbits and satellite motion. Investigate: how force varies with speed; how speed varies with radius; how speed varies with mass. Supplied with full instructions.

Original all metal Gyroscope complete with pull cord and stand.

Chrome plated steel.

Chrome plated steel.

Chrome plated steel.

Chrome plated steel.

Chrome plated steel.

Green tennis balls. Suitable for investigating elastic collisions.

Tub of 72 table tennis balls. Diameter: 40 mm.

Tub of 72 table tennis balls. Diameter: 40 mm.

Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.

Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.

Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.

Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.

Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.

Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.

Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.

Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.

Closely wound steel springs with loops at each end. Spring constant approx. 0.2 N/m.

For demonstrating Hooke's Law. 20 x 16 mm, approximately 30 N/m.

Flat section steel wire in helical coil. Diameter 75 mm.

Flat section steel wire in helical coil. Diameter 75 mm.

Extension springs with known spring constant.

Extension springs with known spring constant.

A set of five springs of the same length but with different spring constants. Each have an eye at one end and hook at the other. Spring constants are: 2.5, 6.0, 10, 15, and 26 N/m.

Comprising FO140110 Student Timer, and two TI170200 Photogates. Ideal for setups with air tracks, dynamics tracks, or other timing experiments which require light gates. Leads not included.

A double photogate with built-in timer and display, which is capable of precise speed measurements, in addition to all the usual tasks of single photogate. • Incorporates timer with display no separate timer required • Easy to operate • Double light barrier direct readout of speed • Laser optics give high precision measurements • Expandable with external sensors (e.g. microphones) • Use two SpeedGates for all the traditional collision experiments • Several SpeedGates can be daisy chained • Pendulum period mode prevents off-by-one errors • Auto rotating display Speedgate can be used as stand-alone unit or pair can be used to carry out all the experiments you can do with two traditional photogates and universal timer plus much more: with the precisely spaced double laser system you get speed readings without length measurements or calculations. The traditional passage time measurements are still possible, if preferred, for teaching purposes. The display divides into two parts giving you immediate access to all results. An adjacent status area shows when light rays are blocked, the state of external inputs etc. SpeedGate is battery powered so can be used as stand-alone unit no cables are required. However, the apparatus can also be powered via USB cable if preferred. It is operated using three pushbuttons, which control primary mode, secondary mode and reset. The reset button also functions as power switch. The primary and secondary modes each correspond to one part of the display. Suggested experiments: • Kinematics of uniformly accelerated motion • 'g' by freefall • Newton's second law • One-dimensional elastic and inelastic collisions • Mathematical pendulum • Speed of sound (requires 2 x SO150400 microphones) Two SpeedGates can be used for collision experiments; the double display will show the two latest measurements. Connect two (or more) SpeedGates together, using the Speedgate Cable, to measure the time interval between the gates e.g. for acceleration experiments. The whole chain is reset with one button press. The timer functions can even be used with external signals e.g. two microphones (SO86270) and SpeedGate makes complete setup for measuring the speed of sound. Easy to work with the display even orients itself automatically when rotated. The Bundle TI180110 comprises two Speedgate units a connecting cable.

Connector cable for the Frederiksen Speedgate TI170100.

A double photogate with built-in timer and display, which is capable of precise speed measurements, in addition to all the usual tasks of single photogate. • Incorporates timer with display no separate timer required • Easy to operate • Double light barrier direct readout of speed • Laser optics give high precision measurements • Expandable with external sensors (e.g. microphones) • Use two SpeedGates for all the traditional collision experiments • Several SpeedGates can be daisy chained • Pendulum period mode prevents off-by-one errors • Auto rotating display Speedgate can be used as stand-alone unit or pair can be used to carry out all the experiments you can do with two traditional photogates and universal timer plus much more: with the precisely spaced double laser system you get speed readings without length measurements or calculations. The traditional passage time measurements are still possible, if preferred, for teaching purposes. The display divides into two parts giving you immediate access to all results. An adjacent status area shows when light rays are blocked, the state of external inputs etc. SpeedGate is battery powered so can be used as stand-alone unit no cables are required. However, the apparatus can also be powered via USB cable if preferred. It is operated using three pushbuttons, which control primary mode, secondary mode and reset. The reset button also functions as power switch. The primary and secondary modes each correspond to one part of the display. Suggested experiments: • Kinematics of uniformly accelerated motion • 'g' by freefall • Newton's second law • One-dimensional elastic and inelastic collisions • Mathematical pendulum • Speed of sound (requires x SO150400 microphones) Two SpeedGates can be used for collision experiments; the double display will show the two latest measurements. Connect two (or more) SpeedGates together, using the Speedgate Cable, to measure the time interval between the gates e.g. for acceleration experiments. The whole chain is reset with one button press. The timer functions can even be used with external signals e.g. two microphones (SO86270) and SpeedGate makes complete setup for measuring the speed of sound. Easy to work with the display even orients itself automatically when rotated. The Bundle TI180110 comprises two Speedgate units a connecting cable.

This Photogate Unit is specially designed to be used together with the Electronic Counter or timer FO140110. It can be used as an optical switch, activated when the light beam is broken and for pendulum period measurements, air track timing, measuring period of rotation etc. The unit is made from impact-resistant plastic with threads for vertical and horizontal mounting using the supplied 10 mm diameter support post. The Photogate Unit is supplied with powerful red transmitter diode, in front of which is a 1 mm slit, and two LEDs on the sides of the unit (red for transmitter, green for receiver), indicating the function. The Photogate Unit can be connected directly to the DIN sockets of the counter and additional photocells can be daisy-chained and connected to the same counter input, for measurement of acceleration etc. Dimensions: 160 x 120 x 28 mm (W x H x D). Gap width: 90 mm.

With two clear glass faces.

This apparatus offers a clear and easy way to observe magnetic fields generated by a constant electrical current. Iron filings can be scattered on the clear surface which passes through the coil and when a current then flows around the coil, the magnetic lines of force will be shown by the alignment of the filings. The apparatus can also be used in conjunction with a magnetic field sensor and/or datalogger. Requires high current laboratory power supply (8-10 A) for best effect. Weight: 1.2 kg. Dimensions (L x W x H): 300 x 200 x 250 mm.

Solenoid - Clear base unit for bench or OHP use, to demonstrate electromagnetic fields around conductors. Available as three different models. Each mounted on base measuring L150 x W150 x H45 mm.