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Forces & Motion
Extension Spring Set
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.
83.79 AED
Timer & Photogate Kit
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.
3445.00 AED
Frederiksen Single Speedgate Unit
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.
1964.39 AED
Frederiksen Speedgate, Connector Cable
Connector cable for the Frederiksen Speedgate TI170100.
30.83 AED
Frederiksen Speedgate, Timing Bundle
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.
2946.98 AED
Frederiksen Photo Gate
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.
909.08 AED
Hooke's Law Kit
A quality piece of apparatus to demonstrate the relationship between the extension of a spring and the load applied to it. Consists of a moveable 120 mm scale that is mounted on a stand and base. Comes complete with a combined mass hanger/pointer which is connected to the suspended spring to allow easy reference to the scale. Dimensions (H x Dia.): 250 x 100 mm.
657.20 AED
G by Free Fall
Use in conjunction with an accurate millisecond timer to calculate acceleration due to gravity. The timer starts when the ball bearing is released from the release unit, the base has an integral vibration sensor which stops the clock as the ball bearing hits the impact plate. Replace the ball bearing, reset the timer and the unit is ready to go again. When used with Lascells timers or other models with de-bounced inputs no additional power is required. If the timer used is found to have “bouncy” inputs then a 4 second delay can be added to the impact plate outputs by powering the unit with 9 V DC. Supplied with: Full instructions Base, release unit, 12 mm ball bearing, 8 mm ball bearing Features: Easy setup with integral vibration sensor No power required for millisecond timers with de-bounced inputs Two ball bearings allowing comparison of different masses Over-moulded rubber landing plate. Integrated de-bounce circuitry to add 4 second delay to outputs. (9 V DC required)
497.62 AED
Millisecond Timer
The Lascells Millisecond Timer is a fully functional, easy to use millisecond timer and has a clear, 4 digit LED display. Three sockets provide START and STOP inputs which respond to any change of switch settings i.e. normally closed to open or vice versa making triggering very simple and reliable. A single switch changes the timer from GATE 1 start and stop to GATE 1 start GATE 2 stop. In addition 3.5 mm sockets are provided to allow Lascells timer light gates to be connected. The timer has millisecond resolution for times up to 10 seconds and then the display auto-ranges for longer periods up to 9999s with corresponding reduced resolution. Supplied with mains plug-top adaptor and full instructions.
718.56 AED
Air Track Blower
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.
1826.06 AED
Guinea & Feather Apparatus
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
274.30 AED
Linear Air Track, Premium, Spare Cart
Spare cart for the Frederiksen linear air track, TI68740.
280.63 AED
Monkey & Hunter
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.
960.46 AED
'g' by Freefall Apparatus Kit
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).
1098.20 AED
