Timstar

Short closed.

Short closed.

Earth is constantly changing massive pieces of its outer layer are slowly sliding under, over, away from, or past each other. Earthquakes shake the continents and oceans, and volcanoes spew out the molten insides of our planet. By studying these awe-inspiring and devastating natural phenomena, you can learn more about the inner workings of Earth. A full-colour, 48-page experiment manual is included. • Build and erupt model volcano with plaster-based ""lava"" that hardens after each eruption. • Volcano can be erupted multiple times volcanic cone builds up with each eruption, like real volcano. • Learn about the different types of volcanoes. • Build working seismograph and simulate earthquakes to see how scientists measure earthquake forces. • Discover plate tectonics, and see how volcanoes and earthquakes are caused by the constant movement of the planet's parts. • Assemble plate tectonics puzzle and geological globe. Play volcano quiz game to learn about well-known volcanoes.

This gobe has striking cartography and features raised relief on the landmasses to give tactile indication of the location of the world's mountain ranges. It also uses raised relief to portray the ocean depths, revealing the trenches and mid ocean rises, which are important to the understanding of plate tectonics and oceanography. The ocean mapping also shows the direction of major currents, which is useful for an understanding of climatology and meteorology. • 300 mm diameter • Over 4000 place names and pieces of information • Suitable for advanced geographic study • Graduations on meridian help to work out lines of longitude latitude • Includes time dial to calculate different time zones • Available mounted on sturdy metal base and meridian or durable plastic base and meridian. • Assembled in the UK with recycled and recyclable materials, using traditional methods • Supplied with information booklet

This useful unit includes four low voltage lamp holders connected in parallel and mounted on BES type base. Individual switches control each lamp, allowing all, some, or none of the lamps to be lit. Four colour-coded 4 mm sockets can be used to link multiple sets together or to connect a power supply and Voltage and Current sensors or meters. Unit comprises: 4 On/Off toggle switches;4 x 4 mm sockets; 4 lamp holders supplied without bulbs, which are available separately. Suggested uses: • Use hand powered generator (EN98100) to feel the increase in power and energy needed to successively light more lamps. • Use with a battery or power supply to study the relationship between voltage, current and resistance. • Useful for studying power, efficiency, and Ohm's law in simple circuit. • Simple to use and quick to set up, as individual components do not need to be connected together to make circuit.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

22 Ohm Mounted Resistor.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

For use in conjunction with the B.E.S or as stand-alone mounted components.

A simple electricity kit designed to make the teaching of electricity fun. Specification: • Robust plastic holders • Clear cover on the base so components clearly visible • 4 mm sockets for ease of connection • Electrical symbol • 20+ individual types available • Teachers instructions • 3 classroom kits available Starter BES kit comprises: • 6 Lamp holders • 4 Cell holders • 2 Push switches • 5 Black leads • 5 Red leads • Teachers instructions

A simple electricity kit designed to make the teaching of electricity fun. Specification: • Robust plastic holders • Clear cover on the base so components clearly visible • 4 mm sockets for ease of connection • Electrical symbol • 20+ individual types available • Teachers instructions • 3 classroom kits available Standard BES kit comprises: • 6 Lamp holders • 6 Cell holders • 2 Push switches • 2 Changeover switches • 1 Motor • 1 Buzzer • 1 Component holder • 5 Black leads • 5 Red leads • Teachers instructions

A simple electricity kit designed to make the teaching of electricity fun. Specification: • Robust plastic holders • Clear cover on the base so components clearly visible • 4 mm sockets for ease of connection • Electrical symbol • 20+ individual types available • Teachers instructions • classroom kits available Advanced BES kit comprises: • 6 Lamp holders • 6 Cell holders • 2 Push switches • 1 Changeover switch • 2 Buzzers • 2 Motors • 2 Component holders • 1 Potentiometer • 2 x10 Ohm Resistors • 2 x 20 Ohm Resistors • 1 Diode • 1 LDR • 1 Red LEDs • 20 Leads • Teachers instructions

SBC, to grip on to cable to suspend bulb.

A brass SBC bulb holder mounted on plastic base, with two mm sockets for electrical connection. Includes 12 V 24 W SBC bulb.

240 V Rough Service lamp which adequately replaces the traditional carbon filament lamp but has the added benefit of being more robust. Suitable for use in optics experiments such as pinhole cameras, projection of an image, determining focal length of lens etc.

Spiral-type, 230/240 V mains voltage low energy light bulbs. These are not suitable for dimming or electronic switches. Bulbs use 5 times less energy than traditional bulbs and are expected to last 8000 hours, based on 3 hours per day burn time. Colour: Warm white.

230 V 'daylight' GLS bulb which simulates natural daylight, offering enhanced colour rendition and improved contrast for inspection, industrial lighting and other visually demanding applications.

Festoon Bulb, 12 V, 10 W

LES (Lilliput Edison Screw) cap bulb. Uses include lighting panels, MFA boards etc.

Torch bulbs.

Torch bulbs.

Torch bulbs.

Torch bulbs.

Torch bulbs. 12 V, 0.1 A.

Torch bulbs.

Lens ended bulbs, with MES bases, producing focused beam of light. Commonly used in torches and applications where directed beam is required. Dimensions: Diameter 9.5 mm (max.) length 24 mm (overall).

12 V bulbs, with SBC fitting, and radial (horizontal) filaments. Can be used in ray box if the bulb holder is rotated such that the filament is parallel to the beams, effectively making it point source. Dimensions 35 x 19 mm. Power 5 W.

12 12 bulbs, with SBC fitting, and radial (horizontal) filaments. bulbs, with SBC fitting, and radial (horizontal) filaments. Can be used in ray box if the bulb holder is rotated such that the filament is parallel to the beams, effectively making it point source.

12 V, 36 W bulb, with SBC fitting, and axial (vertical) filaments. Suitable for ray boxes. Dimensions 55 x 38 mm (L x Dia)

12 V, 48 W bulb, with SBC fitting, and axial (vertical) filaments. Suitable for ray boxes. Dimensions 55 x 38 mm (L x Dia)

Twelve non-electrolytic capacitors selected by a rotary switch mounted on the outer casing. Capacitance values available: 100pF; 220pF; 470pF; 2.2nF; 4.7nF; 10nF; 22nF; 47nF; 220nF; 1µF. Connection by 4 mm sockets.

Electric bell, comprising plastic case with removable cover, and (70 mm) metal plated gong. Runs off 4-6 V AC or DC, via flying mm plug-leads.

A higher quality, more reliable bell manufactured in the EU. Operates on 5-8 V.

Single tone output, panel mounting, transistor oscillator DC buzzer. • Voltage: 6 V • Rated current: 25 mA • Frequency: 400±100 Hz • Sound output: 70-75 dB 30 cm • 100 mm colour-coded leads

Packs of 10 low cost miniature buzzers. These come complete with flying leads and are ideal for educational projects and general purpose use. • Current: 30 mA • Dimensions (L x W x H): 23 x 17 x 15 mm • Fixing Centres: 27.5 mm • Lead Length: 80 mm

A general purpose low signal switching diode, this 1N4148 diode has an operating voltage of 75 V and current rating of 150 mA max.

DO-41 Plastic case, 1 A silicon rectifier diodes. 1 A/50 V.

Photoconductive cadmium sulphide light dependent resistor (LDR) in a miniature epoxy sealed open frame package (4 mm dia.). Cell resistance reduces as light falling on the device increases. Typical applications include light control, cameras, toys etc. Sold as pack of 10. • Peak spectral response: 540 nm. • Light resistance: 50-100 Kohm • Dark resistance: 20 Mohm minimum • Max. voltage: 100 V • Power max: 90 mW • Working temp. range: -20 to +60°

Photoconductive cadmium sulphide cell with a spectral response similar to the human eye. As light falling on the cell increases, so the resistance of the cell decreases. Peak spectral response: Typ. 550 nm. Cell resistance: 9 kΩ at 10 lux. 400 Ω at 1000 lux. Dark resistance: Min. 1 MΩ. Sold as pack of 5.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

Miniature, circular DC motors, ideal for models and educational applications. The MM10 version has flat side. RoHS compliant. Sold as pack of 10.

Miniature, circular DC motors, ideal for models and educational applications. The MM10 version has flat side. RoHS compliant. Sold as pack of 10.

Miniature, circular DC motors, ideal for models and educational applications. The MM10 version has flat side. RoHS compliant. Sold as pack of 10.

Ideal for projects, providing high power and low speed and designed to fit our MM28 type motors. The Perspex base incorporates holes for screw fixing if required. The assembly also includes precision worm and gearwheel, and 150 mm long 4 mm dia. output shaft. RoHS compliant. Motor not included.

High quality wire-wound controls, ideal for loudspeaker volume controls, miniature motor speed controllers, etc. Power rating: 5W; Resistance tolerance: ±20%; Spindle rotation: 300° ±5°; Max. operating voltage: 120V; Breakdown voltage: 200V. Body Dimensions (Dia. x D): 24 x 11mm. Spindle Dimensions (L x Dia.): 6.5 x 6 mm.

6 W, 5 % tolerance wire-wound power resistors which have flame retardant coating, along with ceramic cores and metal alloy resistance wire, offering high resistance stability, excellent heat dissipation and low noise. Sold in packs of 10. • Power rating: 6 W • Resistance tolerance: ±5 % • Max. working voltage: 350 V • Temperature range: -55 °C to +155 °C • Dimensions: 24 x 8 mm

6 W, 5 % tolerance wire-wound power resistors which have flame retardant coating, along with ceramic cores and metal alloy resistance wire, offering high resistance stability, excellent heat dissipation and low noise. Sold in packs of 10. • Power rating: 6 W • Resistance tolerance: ±5 % • Max. working voltage: 350 V • Temperature range: -55 °C to +155 °C • Dimensions: 24 x 8 mm

A kit containing total of 1000 0.25W 5% carbon film resistors. Values ranging from 4.7Ω through to 10MΩ. total of 63 different values, this makes an ideal starter kit.

Miniature low cost push to make switch with red button. Sold in packs of 10.

Contact make-and-break switch (push to make) with sprung contact, mounted on an insulated base.

A mini toggle switcs, which is rugged and reliable. Complete with fittings for mounting. Rating: 1 A 250 V AC Contacts: Nickel plated brass. Panel cut-out: 7.0 mm.

30 Ohm NTC (Negative Temperature Coefficient) miniature disc thermistors, for general purpose applications such as temperature measurement and thermal compensation circuits. Also useful in the classroom for demonstrating how the resistance changes with temperature. thermistor is temperature dependant resistor or 'thermal resistor'. The thermistors are clearly coded. Sold in packs of 10. • Temperature range: -30 °C to +125 °C • Tolerance: 10 %

Nickel plated steel.Takes 4 mm plug. 10 max current.

For DC only with 4 mm terminals.

This analogue voltmeter, specifically designed for use by students, is sturdy instrument for measurement of both AC and DC voltage. The instrument comes with DC/AC switch and has three voltage ranges. Analogue meters can be more useful than digital meters for certain applications, and often provide more visually stable reading. This instrument is electronically protected against overload but must not be connected to voltages exceeding 30 V. • AC and DC ranges: 0-3 V; 0-15 V; 0-30 • Precision: 2 of full scale • Impedance: 10 kΩ/V • Electronically protected against overload • Dimensions: 158 x 108 x 56 mm • Scale length: 72 mm

This analogue ammeter, specifically designed for use by students, is sturdy instrument for measurement of both AC and DC current. The instrument comes with DC/AC switch and has three current ranges. Analogue meters can be more useful than digital for certain applications, and often provide more visually stable reading. This instrument is electronically protected against overload and will tolerate overloads up to 15 for at least 10 seconds. • AC and DC ranges: 0-0.05 A; 0-0.5 A; 0-5 A • Precision: ±2 of full scale • Impedance: 10 kΩ/V • Max. voltage drop: DC: 0.25 V; AC: 0.27 V • Electronically protected against overload • Dimensions: 158 x 108 x 56 mm • Scale length: 72 mm

This galvanometer, specifically designed for use by students, is sturdy but sensitive instrument for the measurement of small currents. The instrument has centre-zero scale and three current ranges and is electronically protected against overload, tolerating overloads of up to up to A for at least 10 seconds. • DC ranges: ± 5 mA; ± 500 μA; ±50 μA • Centre-zero scale • Precision: ± 5 % of full scale • Internal resistance: ± 5 mA: ca. Ω; ± 500 µA: ca. 90 Ω; ± 50 µA: ca. 900 Ω • Electronically protected against overload • Dimensions: 158 x 108 x 56 mm • Scale length: 72 mm

Moving coil DC milliammeters with zero adjust, fully enclosed in robust housing, with clear acrylic front cover. • Scale length: 60 mm • Accuracy: ±2.5 % • Dimensions: 125 x 80 x 80 mm

Moving coil DC milliammeters with zero adjust, fully enclosed in robust housing, with clear acrylic front cover. • Scale length: 60 mm • Accuracy: ±2.5 % • Dimensions: 125 x 80 x 80 mm

Economical analogue bench meters designed for education. Large, easy-to-read scales. Connection via 4 mm terminal posts. • Accuracy: 2.5 % • Dimensions: 100 x 133 x 97 mm

Economical analogue bench meters designed for education. Large, easy-to-read scales. Connection via 4 mm terminal posts. • Accuracy: 2.5 % • Dimensions: 100 x 133 x 97 mm

Moving coil DC microammeter with zero adjust, fully enclosed in robust housing, with clear acrylic front cover. • Range: 0-500 µA • Resolution: 10 µA • Scale length: 60 mm • Dimensions: 125 x 80 x 80 mm

Economic, robust digital meters, housed in sturdy ABS case with clear LCD screen. Input is via 4 mm sockets on the front panel, which features an on/off switch. Each meters requires a 9 V, PP3 battery (NOT included). Dimensions (W x D x H): 100 x 140 x 100 mm.

Economic, robust digital meters, housed in sturdy ABS case with clear LCD screen. Input is via 4 mm sockets on the front panel, which features an on/off switch. Each meters requires a 9 V, PP3 battery (NOT included). Dimensions (W x D x H): 100 x 140 x 100 mm.

Supplied in strong high grade ABS case with large bold LCD and 4 mm colour coded sockets. Powered by 1 x 9V PP3 Battery (supplied). Dimensions (L x W x H): 95 x 90 x 75mm.

Supplied in strong high grade ABS case with large bold LCD and 4 mm colour coded sockets. Powered by 1 x 9V PP3 Battery (supplied). Dimensions (L x W x H): 95 x 90 x 75mm.

This meter comes in a moulded plastic cases and features a 25 mm LCD. Input is via colour coded 4 mm sockets and the unit is short circuit and overload protected. Powered by a 9 PP3 battery (not supplied). Dimensions (L x W x D): 115 x 80 x 45 mm.

This meter comes in a moulded plastic cases and features a 25 mm LCD. Input is via colour coded 4 mm sockets and the unit is short circuit and overload protected. Powered by a 9 PP3 battery (not supplied). Dimensions (L x W x D): 115 x 80 x 45 mm.

This meter comes in a moulded plastic cases and features a 25 mm LCD. Input is via colour coded 4 mm sockets and the unit is short circuit and overload protected. Powered by a 9 PP3 battery (not supplied). Dimensions (L x W x D): 115 x 80 x 45 mm.

This meter comes in a moulded plastic cases and features a 25 mm LCD. Input is via colour coded 4 mm sockets and the unit is short circuit and overload protected. Powered by a 9 PP3 battery (not supplied). Dimensions (L x W x D): 115 x 80 x 45 mm.

This updated USB version of the low voltage Joulemeter includes datalogging and an improved specification and can be used with or without computer. Designed to be simple enough to use at KS3, and flexible enough for more advanced use at KS4 and beyond, the Joulemeter simply requires an input supply and load to be plugged in (e.g. solar panel and motor) and the meter will display the values of the power and the energy transferred. For simplicity, the instrument automatically adjusts the display to show suitable units and an appropriate number of decimal places, so that it can deal with a very wide range of values (e.g. for energy, from 100 nanojoules up to 1.75 megajoules). This version of the Joulemeter functions almost identically to the previous version but in addition the meter also keeps a log at the chosen sample rate when the total energy transferred is being measured; the data can then be loaded on to PC using free mini-datalogger software. The function button allows any of four settings to be selected for the required quantity to be measured (energy and time; power; average power; voltage, current and power). • Current range: ±7 (current can flow in either direction) • Voltage range: ±25 V • Log memory: 2500 samples • Log sample period: 1, 2, or 4 seconds • Powered via USB or using the 5 V mains adaptor (included)

The MY60 is high quality, high-accuracy 3.5 digit multimeter offering excellent value for money. This meter has thirty two ranges, which cover measurement of AC and DC voltage, AC and DC current and resistance plus test positions for diodes and transistors. It also incorporates an audible continuity tester, large, clear LCD display and 'low battery' indicator which shows when the battery is exhausted. The meter is supplied with rubberised holster for protection, which has 2-height stand built in along with clips to hold the test probes. Designed in accordance with IEC-1010. Supplied complete with holster, test probes, PP3 battery and instruction manual. Weight: 310 g (including battery). Dimensions (D x W x H): 31.5 x 91 x 189 mm. Features: • 32 Ranges • Large LCD 3.5 digits • Auto power off • DC voltage: 200m/2/20/200V ±0.5%, 1000V ±0.8% • AC voltage: 200mV ±1.2%, 2/20/200V ±0.8%, 700V ±1.2% • DC current: 20µA ±2.0%, 200µA/2m/20mA ±0.8%, 200m/2A ±1.5%, 10A ±2.0% • AC current: 20µ/200m/2A ±1.8%, 2m/20mA ±1.0%, 10A ±3.0% • Resistance: 200/2k/20k/200k/2MΩ ±0.8%, 20MΩ ±1.0%, 200MΩ ±5.0% • Continuity checking with buzzer • Diode check: Test current 1.0mA, test voltage 2.8 • Power: PP3 (9V) 1 • hFE: ~ 1000 • Display: 30mm x 60mm LCD

An easy to use compact 3.5 digit LCD multimeter. Supplied with test leads, battery and boot. Dimensions (L x W x D): 162 x 86 x 33 mm. Features: • DC volts 200mV to 1kV • AC volts 200mV to 750V, • DC amps 20mA to 10A • Resistance 200Ω to 2MΩ • Diode Test • Continuity

Leads come ready assembled with moulded-on strain reliefs. BNC plug to crocodile clips.

Leads come ready assembled with moulded-on strain reliefs. BNC plug to stackable 4 mm plugs.

Leads come ready assembled with moulded-on strain reliefs. BNC plug to 4 mm sockets.

This multi-purpose microphone has been designed for a number of applications and experiments requiring the use and demonstration of audio input, including voice and music waveforms. The electret condenser type microphone is mounted in a moulded plastic box with two standard 4 mm output connectors, an on/off switch and a power indicator. • Electrical Supply: 9V PP3 battery (supplied) • Dimensions: 68 x 120 x 36 mm • Mass: 0.15 kg • Sensitivity: -42 db • Frequency Response: 20 Hz to 20 kHz • Output Impedance: 2.2 kohm