Physics is the pure science that deals with matter its motion and action. Learning physics without practicals become dull-boring and sometimes seems impossible. The Science Lab being the leading manufactures, supplier, and exporter of laboratory equipments in India brings a full range of physics equipments.

We are providing physics laboratory instruments in many schools, universities, research centers, and institutes. Our equipment undergo extensive testing on various parameters to ensure our stands on high quality, reliability and durability. We design the equipments keeping in mind the needs of students and the teachers.

Some of our extensively used high school physics equipment are physics LabWare, mechanics and educational models of physics lab, range of ammeter and voltmeter, electrostatic physics LabWare, fluid mechanics equipment, physics sound & waves lab, mechanics physics LabWare, electronic lab equipment, and many more. We believe in practical based learning which boost the minds of the learners, makes them independent, and increases their confidence.

Dual Range Ammeter

Product Code : SLE/PHY/01A

Dual Range Ammeter 0-1 and 0-5A

Moving coil Ammeters, DC only, with zero adjustment and 4mm socket terminals. 

Size: 125 x 80 x 80mm. 

2.5% accuracy.

Dual Range 0-1 and 0-5A.

Scale length: 60mm.  

Ammeter DC Dual Range OHP

Product Code : SLE/PHY/01

Used to measure the flow of electric current in a circuit. Each unit incorporates dampening features and magnetic shielding. DC -dual range 0-0.5A & 0-2.5A. (+/-2.5% Accuracy).  Built in transparent cases so that they can easily be projected for classroom education via an OHP.

Ammeter Voltmeter

Product Code : SLE/PHY/02

Measures both voltage between two points in an electric circuit and the flow of electric current. A slide selector for amps / volts automatically selects internal shunting -indicates whether on amps or volts reading and secures the input sockets from the possibility of incorrect connection. The input is made via a dual 4mm or terminal type connection and zeroing is achieved by screw adjustment on the front of the meter. This dual purpose meter offers an analogue quadruple range.  

Range –

DC Amps Dual scale 100 uA -100mA -1A & 5A.
DC Volts Dual scale 100 mV -1V -10V & 50V. 
 

Dimensions : 160x114x60 mm.Factorur, ex mus, quiz Extra Surface

Apparatus Air Track Light Gate

Product Code : SLE/PHY/03

One of the most useful pieces of apparatus that a physics class could have. Used to study linear motion under virtu-ally frictionless conditions. Allows one to four carts to ride along on a cushion of air. Photo light gate system com-plete with timer light gates -accessories kit and Blower Air source. Spring bumpers can be attached to record impact forces and weights can be attached to each cart for studying momentum and many other phenomena’s involving force. High precision pulleys are included to mount on the ends for performing free falling and incline experiments.

Apparatus Air Track Part Kit

Product Code : SLE/PHY/04

Replacement part for apparatus air track.
Kit contains :
2 heavy and 1 light vehicle with their mass ratio 2:1
2 Magnetic buffers
2 Plasticine Holders with central hole
24 Needles
20 Black plain cards
4 Catapults with slots for elastic band
1 Reel of nylon thread
2 White rods (4 mm diam.150 mm long)
1 Pack of plasticine
20 Elastic bands
1 Instruction manual.

Apparatus Bar & Gauge

Product Code : SLE/PHY/05

For illustrating expansion by heat and contraction by cooling. Length 225mm approx. Comprising a bar of iron 108 mm x 12.7 mm l x d, mounted on a support rod fitted with a wooden handle and a brass gauge 150 x 38 mm with a cut-out -which just admits the bar lengthways and a hole and a hole which passes the bar endways when cold.

Apparatus Collision 2 Dimension

Product Code : SLE/PHY/06

Study how energy and momentum change in elastic and inelastic collisions. The apparatus consists of a curved track with a base permanently mounted at one end. The track is level so the collision occurs only in the horizontal plane simplifying the calculations. On the base is a support to hold a ball at the proper height for a center to center collision with a second ball rolling down the track. A pin and three holes are provided in the track so that the drop height of the ball is consistent.

Apparatus Conductivity Cam

Product Code : SLE/PHY/07

To demonstrate different thermal conductivities of different metals. The apparatus also facilitates the studying of observations at later stage also through the use of index. The vessel has thick rim at the top for supporting it by ring fitted to a retort stand. Apparatus consists of metal rods mounted vertically on the outer side at the base of a cylindrical copper vessel. Supplied complete with indices.

Apparatus Convection In Liquid

Product Code : SLE/PHY/08

Comprising a 350 x 210mm rectangle of 22mm glass tubing. Convection currents may be generated by gently using heating one of the lower corners of the rectangle and a small amount of potassium permanganate (VII) crystals dropped into the tubule will act as an indicator. In use the tube is mounted vertically in a retort stand.

Apparatus Coulomb’s Law

Product Code : SLE/PHY/09

Verifies Coulomb’s Law of the Force Between Charges by Direct Measurement. Suspend one sphere from the top of a box -rest the other on the bottom. Bring them together and the hanging sphere deflects from the other. The apparatus is fully assembled and self-contained. Students precisely measure deflection with an easy-to-read ruler -and so calculate the force. A mirror assures accuracy by eliminating parallax.

Apparatus Falling Bodies (Projectile)

Product Code : SLE/PHY/10

Showing that horizontal and vertical motions are independent of each other. On releasing the catch -one steel ball drops vertically while the other is projected horizontally both hitting the floor at the same time. Consists of a wooden block 190 x 58 x 30 mm approx. with a pivoted L-section spring loaded metal launching bar with a trigger catch. Supplied with 2 steel balls with storage recess in the block.

Apparatus Force of Conductor

Product Code : SLE/PHY/11

Fleming’s Law. Demonstrates that when current passed through a conductor in a magnetic field -it is subjected to a force of attraction or repulsion depending upon direction of current in it. A brass axle with plastic discs is free to roll along rails. Comprises a strong U-shaped magnet and a pair of brass rails with 4mm socket terminals.

Apparatus Heat/Thermal Conductivity

Product Code : SLE/PHY/12

The apparatus consists of a wood compound ring with four pointed strips of metal attached at 90 degrees to each other around the ring. The strips are attached so that their points are in the center of the ring. At the other end of each strip there is an indentation for holding water. Depending on the conductivity of the metal the water will evaporate at different times. Each strip is made of a different metal – aluminium, brass, copper and iron.

Apparatus Inertia

Product Code : SLE/PHY/13

For illustrating an effect of inertia.

When you place the ball on the card and pull back the spring the card (cloth) shoots forward but the ball (dish) drops back to post (table). Actually the ball did move but because it is a ball -it settled into the cup. (The ball has a 5 mm flat spot which permits to stay on the card)

Try the same experiment with a coin. Contains : glass ball, card, plastic base, post hardware instructions.

Apparatus Newton’s Ring

Product Code : SLE/PHY/14

Display the interference pattern caused by the reflection of light between two surfaces. A convex lens mounted on top of a flat lens in a metallic frame with three terminals. Ring measures 4″ in diameter and 1-1/2″ thick. When viewed with monochromatic light, it appears as a series of dark and light rings. When viewed with white light, it produces a series of rainbow colored rings.

Apparatus Microwave

Product Code : SLE/PHY/15

Kit for demonstrating wave properties of electromagnetic microwaves. Requires 12V dc supply. Clearly demon-strates reflection, polarization, diffraction, interference for comparison with the behavior of visible light. With in-struction booklet.

Consists of :
battery charging lead
two large aluminium reflectors
one narrow aluminium reflector
black hardboard mirror
polarization grille
microwave transmitter
receiver
audio amplifier and loudspeaker.

Apparatus Newton’s Second Law

Product Code : SLE/PHY/16

Helps students to visualize and grasp Newton’s Second Law of Motion. This sturdy unit demonstrates that a horizontally projected ball and vertically dropped ball land at the same time. With a detachable rod for clamping to a table or stand. This spring device can propel a ball to 48″ from its starting point. Instructions provided. (12″ x 4-1/2″ x 2″; 1.21Ibs).

Apparatus Young Modulus Searle’s

Product Code : SLE/PHY/17

Modulus of elasticity -is a measure of stiffness of a given material. A specially designed apparatus capable of high sensitivity and accuracy. It is defined as the ratio -for small strains -of the rate of change of stress with strain. Two cast metal rectangular frames hinged together parallel to each other to allow only vertical relative motion -with a spirit level fixed on a cross-bar pivoted across the frames for noting the reference point. Each frame has a self-centering chuck at its top for holding wires and load hooks at the bottom. One frame has vertical scale 10 – 0 – 10mm with a micrometer head along it reading to 0.01mm for adjusting the spirit level. Also included are ceiling bracket carrying a pair of chucks -a counterpoise weight and a set of two wires -one each of brass and steel. The relative displacement between the two frames can be known from the micrometer reading after adjusting the bubble of spirit level.

Balance Demonstration Fulcrum/Lever

Product Code : SLE/PHY/18

A quick and effective way to help students comprehend the relationship between length of the lever arm moment of force and amount of force. Consists of a meter stick, stand, three knife, edge clamps, one 50 gram hooked weight and one 100 gram hooked weight. When they adjust weights on the lever to establish equilibrium students will observe the law of torque and its properties.

Balance Spring Tubular Plastic

Product Code : SLE/PHY/19

Used to measure force such as the force of gravity exerted on a mass or be calibrated for the accurate measurement of mass. Length 250 mm overall including ring and hook. The spring mechanism is clearly visible and zero adjustment is incorporated. Each range is color coded for convenience and is scaled in both grams and Newton’s.

Bar Compound Copper & Iron

Product Code : SLE/PHY/20

Demonstration of the thermostat principle. Consists of a bimetal strip mounted in a wooden handle. One of each brass and iron riveted together from end to end with wooden handle. Because of the unequal expansion of the two different metals the bar will bend when heated which illustrates the operation of a thermostat.

Battery Clip, PP3

Product Code : SLE/PHY/21

Battery Clip
A standard PP3 battery clip with 150 mm leads.
Can be used with PP3 batteries or press stud type battery holders.

Battery Snap with Crocodile Clip

Product Code : SLE/PHY/22

Battery connector with crocodile clips attached for easy connection.

Bernoulli Tube Apparatus

Product Code : SLE/PHY/23

Consist of a Bernoulli tube, with central narrowed portion, a constant bore gradient tube, 6 lengths glass tubing, 2 swan necked outlets tubes and 8 small pieces of rubber connecting tubing for joining various glass tubings as and when needed. The two flow tubes, each 500 x 13mm ( L x OD) have three sealed-in short side tubes of length 25mm each with interspacing of about 150mm for connection to glass tubing lengths for use as manometers. To study the effect of constriction, the middle short side tube in Bernoulli tube come out from the central narrowed portion.  To explain Bernoulli theorem by observing the variation in the pressure and speed of flow of an incompressible fluid through a tube with respect to the tube bore or cross-section.

Bourdon Gauge

Product Code : SLE/PHY/24

This product is for both general and laboratory use. The gauge of rugged design is mounted on a heavy metal base giving great stability. The back of the gauge is enclosed by clear Perspex, allowing the mechanism to be viewed. The input metal tube is is rifled and designed to fit rubber tubing of 8mm internal diameter. The read-out is by a substantial black needle on a 100mm diameter white face.

Calibration : Scales are given on the white face in both kg/cm2 (black) and psi (red). Conversion to SI units (pascals) can be obtained with sufficient accuracy by multiplying the kg/cm2 readings by 105.

Note : The gauge is for positive pressures only (i.e. those in excess of atmospheric pressure). Connection to a source of negative pressure (e.g. vacuum pump) could result in damage to the apparatus.

Boyle’s Law – Simple Type

Product Code : SLE/PHY/25

A simple and economical apparatus for the demonstration of Boyle’s Law. Consists of a sealed syringe mounted on wooden platforms. Change in volume can be read from the syringe scale. When loaded with different masses the air inside is compressed.

Bucket & Cylinder, (Large)

Product Code : SLE/PHY/26

For demonstrating Archimedes’ principle. The bucket has a suspension loop at the top and a hook at the bottom. This is a simple brass unit, suitable for class demonstration or individual use. The cylinder has a suspension hook at one end.

Technical Specification :
60 mm, overall 160 mm

Bucket & Cylinder, Small

Product Code : SLE/PHY/27

The bucket has a suspension loop at the top and a hook at the bottom. The cylinder has a suspension hook at one end. For demonstrating Archimedes’ principle. This is a simple brass unit, suitable for class demonstration or individual use.

Technical Specification :
50mm, overall 115mm

Caliper Vernier (Metal)

Product Code : SLE/PHY/28

Measure internal and external dimensions as well as depth by use of the shaft that is attached to the movable head which slides along the center of the body. Caliper takes measurements in both metric (0 to 120 mm in 1-mm divisions) and standard scale. Nickel-plated steel with a roller adjustment and packaged in a plastic case.

Calorimeter Set, Aluminium

Product Code : SLE/PHY/29

A spare cap included for when an experiment does not require heat. Stirrer and stopper included. Precision heating element and custom made foam plastic heat insulation. It is a 1% resistance tolerance 2W resistor conveniently mounted on nickel plated brass poles by means of a transverse screw. No thermometer included. Made up of a 1% resistance tolerance 2W resistor mounted on nickel plated brass poles; this Joule’s Calorimeter Set is available to buy online now.

Technical Specification :
Precision heater is 12 W.
Outer vessel plastic : 110 x 100 mm.
Inner vessel aluminium : 70 x 65 mm.

Calorimeter Set, Copper

Product Code : SLE/PHY/30

The unit is a nickel-plated copper calorimeter 75 x 50 mm (diameter), lagged and enclosed within an outer vessel 100 x 75 mm (diameter). A close-fitting ebonite lid is provided with a wire stirrer, and a pair of 4 mm socket terminals connected to a Constantan wire heating coil. For the determination of the specific heat capacity of a liquid by the electrical method. Supplied without thermometer. The resistance of the coil is approximately 6 ? and should be used with a current 0.5 A (with a maximum of 1A).

Circuits Kit Bulb Holder

Product Code : SLE/PHY/31

Circuits Kit Spares
Spare components for Circuits Kit
Bulb Holder
Components mounted on sturdy panels for ease of use and storage.

Capillary Tube Apparatus

Product Code : SLE/PHY/32

The apparatus comprises a metal frame holding six capillary tubes of different bores vertically in a trough. The trough is filled with water and the difference in height of the resulting columns of water is immediately clear. For demonstrating the relationship between capillary pressure and the bore diameter of the capillary tube.
Overall height of frame : 90 mm
Length of capillary tubes : 150 mm.

Circuits Kit Buzzer

Product Code : SLE/PHY/33

Circuits Kit Spares
Spare components for Circuits Kit
Buzzer
Components mounted on sturdy panels for ease of use and storage.

Circuits Kit Electrode Holder

Product Code : SLE/PHY/34

Circuits Kit Spares
Electrode Holder
Spare components for Circuits Kit
Components mounted on sturdy panels for ease of use and storage.

Circuits Kit Push Switch

Product Code : SLE/PHY/35

Circuits Kit Spares
Spare components for Circuits Kit
Push Switch
Components mounted on sturdy panels for ease of use and storage.

Circuits Kit Rheostat

Product Code : SLE/PHY/36

Circuits Kit Spares
Spare components for Circuits Kit
Rheostat
Components mounted on sturdy panels for ease of use and storage.

Compass Plotting (Clear)

Product Code : SLE/PHY/37

Device used to indicate the direction of the magnetic field circuits.

20mm diameter aluminium case with clear plastic top and bottom.

North marked in red on 10 mm steel needle mounted on brass bearing.

Excellent for tracing the field of a bar magnet.

Packs of 12.

Conductive Putty

Product Code : SLE/PHY/38

The kit contains a 60mm long and 20mm in diameter cylinder which has a resistance of approximately 20Ω. Can readily be connected into an electrical circuit and both length and diameter can easily be altered by ‘re-molding’ the putty. Conducting putty is a useful aid to teaching resistivity and the relationship between length and cross-sectional area on resistance.
Approx 100g.

Digital Voltmeter/Ammeter With Shunts

Product Code : SLE/PHY/39

Digital Meter with Shunts
This meter has two attachments included, 0-10 DC Amps and 0-20 DC Volts, so it can be used as an ammeter or as a voltmeter.

The basic unit has an input impedance of 100 kohm.

The resolution is 0.01 and accuracy is ± 2%.
Ideal for use with Teltron Helmholtz coils. Supplied with a PP3 battery that gives a useful life of over 1000 hours.

Component Holder

Product Code : SLE/PHY/40

Pack of 8 mounted clips to hold components in physics investigations.
High quality holders that can be used for a variety of experiments.

Protactinium Generator

Product Code : SLE/PHY/41

Protactinium 234 has a half-life of about 70 seconds, and is ideal for the observation of radioactive decay. Supplied in a sealed container with leak-proof closure. The isotope is a product of the Uranium 238 decay series.

Geiger Muller Tube Holder

Product Code : SLE/PHY/42

Geiger - Muller Tube Holder, for use with Scaler Timer. An aluminum box which houses the G.M. tube socket. Connection is through a 1 m long co-axial connecting lead, terminated in a standard P.E.T. connector. A 2.2 M? stabilizing resistor is internally wired in series with the anode connection.

Scaler Timer

Product Code : SLE/PHY/43

General purpose scaler-timer, suitable for radioactivity counting utilising a GM tube and as a general purpose millisecond digital timing device with manual or electronic triggering. 6-digit, bright green LED display. Manual or timed counting of 1, 10 or 100 seconds. Auto ranging on timing modes. Press-to-read switch to read the accurate applied voltage to the GM tube. Built in loudspeaker and switch on the back of the machine allows audible indication of counts when required.

Specifications : 
Operation :
Timer / Scaler
GM tube Voltage : 300 V to 500 V
Fuse : 315 mA (L) slow-blow
Capacity : 999,999 counts or seconds
Input power: 230 V ±5%, 50 Hz
Timing inputs : Manually switched start/stop; light gate(s) operated start/stop
Dimensions: 208 x 155 x 115 mm (W x H x D).
Height including handle is 187 mm.

Teltron Electron Deflection Tube D

Product Code : SLE/PHY/44

Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied. By adjusting the electric field so that it cancels the magnetic deflection, it is possible to determine the specific charge e/m and the velocity of the electrons. The electron beam can be deflected electrically in the electric field of the built-in plate capacitor, and magnetically by using the Helmholtz coil pair D. Instructions included.

Specification :
Filament voltage :
6.3 V AC
Max. anode voltage : 5000 V
Glass bulb :  approx. 130 mm diameter
Anode current : approx. 0.1 mA at 4000 V
Max. capacitor voltage :  5000 V
Fluorescent screen: approx. 90 x 60 mm²
Total length : approx. 260 mm.

Teltron Tube Holder S

Product Code : SLE/PHY/45

This holder is the mounting point for the entire line of Teltron Student (‘S’) Series and related accessories, such as the Helmholtz Coils S and Auxiliary Coil. The slots for holding coils have metric rulings to ensure precise adjustments with a maximum spacing of 150 mm. An easily replaceable fuse is located in the holder to protect the valuable tubes from excessive voltage. The Auxiliary Coil can be inserted into the stepped front side of the tube holder.

Teltron Electron Diffraction Tube D

Product Code : SLE/PHY/46

Highly evacuated electron tube for demonstrating the wave nature of electrons through the observation of interference caused by passage of electrons through a poly crystalline graphite lattice (Debye-Scherrer diffraction) and rendered visible on a fluorescent screen. Instructions included. Also intended for determining the wavelength as a function of the anode voltage from the radii of the diffraction rings and the lattice plane spacing of graphite, as well as confirming de Broglie’s hypothesis.

Specifications :
Max. filament voltage :
6.3 V AC
Max. anode voltage : 5 kV
Anode current : approx. 0.1 mA at 4 kV
Lattice constant of graphite : d10 = 0.213 nm ; d11 = 0.123 nm.

Planck’s Constant Apparatus

Product Code : SLE/PHY/47

The planck’s constant apparatus functions as a ready-built circuit for the measurement of the photoelectric effect. Ideally used in conjunction with the Picoammeter. Inside the unit are a caesium antimony cathode, a D/C power supply with a potentiometer to provide a variable retarding voltage to the photoelectric circuit and a digital display showing the retarding voltage. A 4 mm to UHF lead is included for connecting the picoammeter to the apparatus. 6 Different colored lenses are provided to vary the value of ‘f’.

Specifications :
DC Stopping potential controlled by 10-turn potentiometer DC voltmeter with 0-19.99 V LED display
Filters : 6 narrow-band (FWHM bandwidth : 4-15 nm), with wavelengths of 405 nm, Female UHF socket for connection to picoammeter
Photocell : caesium antimony cathode (spectral response range 185-650 nm)
Power source : 9 V PP3 battery Dimensions: 205 x 150 x 115 mm (W x H x D)

Teltron Helmholtz Pair of Coils S

Product Code : SLE/PHY/48

Teltron Helmholtz Coils S
Pair of Helmholtz coils for generating a uniform magnetic field perpendicular to the axis of the Teltron S series tube. Teltron Tube Holder S allows the coils to be configured in the Helmholtz geometry or at variable distances to produce magnetic fields aligned vertically, or coaxial, with respect to the tube axis. The maximum field strength generated by the coils (~ 10 mT) is approximately 300 times weaker than that produced by an MRI machine (~ 3T), known to be safe for use by people with medical implants such as pacemakers. Instructions included.

Specification (each) : 
Number of turns :
320
Coil diameter : 138 mm
Terminals: 4 mm safety sockets
Load rating : 1.0 A (Continuous operation); 1.5 A (Short-term operation)
Effective Impedance : approx. 6.5 ohm
Max. field strength: approx. 9 mT.

Sealed Radioactive Source, Americium

Product Code : SLE/PHY/49

The active material is enclosed in metal foil fixed in a cylindrical mount provided with a stem of 4 mm diameter. The nature and strength of each source is clearly engraved on its mount and it is also color coded for identification. Each is supplied in a small lead castle’ in a suitably labelled MDF storage box 100 x 75 x 65 mm high. The foil is further protected from accidental damage by a wire gauze cap over the open window’ of the mount. A data sheet is enclosed with each.

5μCi (185 kBq) of Americium 241 incorporated in a silver-palladium disc which transmits a substantial proportion of the alpha particles and a small amount of low energy gamma emission.
• Emissions : α and γ
• Color code : Brown
• Half-life : 458 years

Plancks Constant Determination Box

Product Code : SLE/PHY/50

This apparatus is designed to determine the approximate value of Planck’s Constant using the elbow voltage in the characteristics curves of a number of LEDs. By monitoring the voltage at which each LED begins to emit light a graph of energy input as a function of light emitted frequency can be plotted and an approximate value of Planck’s Constant can be deduced. There are seven LEDs covering from deep blue at 470 nm to near IR 940 nm mounted on the box with sockets for voltage and current measurements. External 9 V power source or 9 V battery and connecting leads required.

Teltron Dual Beam Tube D

Product Code : SLE/PHY/51

Semi-evacuated electron tube filled with low-pressure helium and containing a tangential and axial electron gun. In the case of axial bombardment and a co-axial magnetic field, kinetic gas theory (e.g. impact excitation) and particle collisions can be studied through observations of the fine, luminescent beams resulting from excitation of the helium atoms. In the case of tangential bombardment and a perpendicularly aligned magnetic field, the fundamental electron charge-to-mass ratio can be determined from the diameter of the observed beam pattern. Product includes tube only. Instructions included.

Specification :
Max. filament voltage :
7.5 V
Max. deflection voltage : 50 V DC.
Max. anode voltage : 300 V DC
Anode current : approx. 30 mA at 200 V (anode)

Teltron Perrin Tube S

Product Code : SLE/PHY/52

Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied.

The electron beam can be deflected using two methods :
Electrically using electric field of the built-in plate capacitor, or
Magnetically using external Helmholtz Coils S. Also determine the fundamental electron charge to - mass ratio (e/m) and study mean electron velocities using field cancellation. Instructions included.

Specification (each) : 
Max. filament voltage:
6.3 V AC
Anode current: approx. 0.1 mA at 4 kV (anode).
Max. anode voltage: 5 kV
Max. capacitor voltage: 500 V

Teltron Dual Beam Tube S

Product Code : SLE/PHY/53

Semi-evacuated electron tube filled with low-pressure helium and containing a tangential and axial electron gun. In the case of axial bombardment and a co-axial magnetic field, kinetic gas theory (e.g. impact excitation) and particle collisions can be studied through observations of the fine, luminescent beams resulting from excitation of the helium atoms. In the case of tangential bombardment and a perpendicularly aligned magnetic field, the fundamental electron charge-to-mass ratio can be determined from the diameter of the observed beam pattern. Instructions included

Specification :
Max. filament voltage
: 7.5 V
Max. anode voltage : 300 V DC
Anode current : approx. 30 mA at 200 V (anode)
Max. deflection voltage : 50 V DC.

Teltron Electron Diffraction Tube S

Product Code : SLE/PHY/54

Highly evacuated electron tube for demonstrating the wave nature of electrons through the observation of interference caused by passage of electrons through a poly crystalline graphite lattice (Debye-Scherrer diffraction) and rendered visible on a fluorescent screen. Also intended for determining the wavelength as a function of the anode voltage from the radii of the diffraction rings and the lattice plane spacing of graphite, as well as confirming de Broglie’s hypothesis. Instructions included

Specification :
Max. filament voltage
: 6.3 V AC
Lattice constant of graphite : d10 = 0.213 nm; d11 = 0.123 nm.
Max. anode voltage : 5 kV
Anode current : approx. 0.1 mA at 4 kV

Teltron Tube Holder D

Product Code : SLE/PHY/55

Holder for the complete range of Teltron D-series tubes and accessories. Three rubber feet prevent slipping and provide maximum stability. Cast light alloy stand has a wishbone, 360° rotating clamp made of heat-resistant plastic and two base holes for affixing the Teltron D Helmholtz Coils. 4 mm earthing socket in pillar base. Instructions included.

Dimensions : approx. 230 x 175 x 320 mm
Weight : approx. 1.5 kg

Teltron Helmholtz Pair of Coils D

Product Code : SLE/PHY/56

Pair of Helmholtz coils for generating a uniform magnetic field perpendicular to the axis of the Teltron D series tubes. The maximum field strength  enerated by the coils (~ 10 mT) is approximately 300 times weaker than that produced by an MRI machine (~ 3T),  which are known to be safe for use by people with medical implants such as pacemakers. Allows the coils to be configured in the Helmholtz geometry or to produce magnetic fields aligned vertically, or coaxial, with respect to the tube axis.
Instructions included.

Specification : 
Number of turns :
320
Max. continuous current : 1.0 A
Max. momentary current : 10 min @ 1.5 A; 3 min @ 2 A
Connectors : 4-mm sockets.
Effective impedance : 6 ohm
Max. field strength : approx. 10 mT

Cylinders, Metal (Set of 6)

Product Code : SLE/PHY/57

Metal Cylinders
Precision cylinders for experiments on density.
Set of 6.
Diameter : 10 mm
Supplied in wooden block.
Cylinders : Brass, Lead, Iron, Copper, Aluminium and Zinc.

Metal Density Cubes (Set of 6)

Product Code : SLE/PHY/58

Set of 6
Side : 20 mm
Brass, Lead, Zinc, Copper, Aluminium & Iron.

Metal Density Cube Set

Product Code : SLE/PHY/59

Set of 7
Side : 20 mm
Brass, Lead, Steel, Copper, Aluminium, Iron & Tin.

Stackable Leads

Product Code : SLE/PHY/60

4 mm stackable lead.
500 mm length.
Color : Black
 

Stackable Leads Red

Product Code : SLE/PHY/61

4 mm stackable lead.
Color : Red
Length : 500 mm

MES Bulb Holder

Product Code : SLE/PHY/62

Lamp holder for MES type lamps. Screw terminals to allow wires to be easily attached. 10 mm fixing centres.

Materials Kit

Product Code : SLE/PHY/63

A selection of materials in the form of rectangular blocks intended to familiarize the student with appearance, feel, texture, hardness and density of a range of common substances.

Push Switch Circuits Kit

Product Code : SLE/PHY/64

Circuits Kit Spares
Spare components for Circuits Kit
Push Switch
Components mounted on sturdy panels for ease of use and storage.

Miniature LDR

Product Code : SLE/PHY/65

This miniature Light Dependent Resistor is housed in an epoxy package. Resistance reduces as the light falling on the device increases. Consisting of a resistor which is made of semiconductor material whose conductance changes with variations in luminance.

Technical Specification : 
Diameter :
5 mm
Dark resistance: 1 MΩ
Max. voltage : 150 V peak AC or DC
Power dissipation: 100 mW
Resistance @ 10 Lux : 10-20 kΩ
Resistance @ 100 Lux : 2-4 kΩ
Peak spectral response : 540 nm
Lead pitch : 3 mm
Operating temperature : –30°C to +70°C

Stackable Leads Yellow

Product Code : SLE/PHY/66

Stackable Leads
4 mm stackable lead.
Length : 500 mm
Color : Yellow

Crocodile Clips & Leads

Product Code : SLE/PHY/67

Crocodile Leads
Pack of 20
460 mm leads with a crocodile clip at each end.

Knife Switch – Single Pole, Single Throw

Product Code : SLE/PHY/68

Knife Switches on Bases
Single Pole, Single Throw
A range of knife switches mounted on plastic bases, suitable for use in electricity circuits. The poles and blades are made of brass to ensure good electrical connections.

Simple Circuit Module Motor

Product Code : SLE/PHY/69

Simple Circuit Modules :
LED Boards

Large light emitting diodes with series resistor of 220 ohms for p.d’s of up to 6 V.

Motor
A low-voltage d.c. motor with series resistor to limit current consumption. On base.

Electricity Economy Kit

Product Code : SLE/PHY/70

Basic assortment of components suitable for introductory electronics.

Kit consists of :
10 x Crocodile Leads
3 x 1.5 V Cell Holders
10 x MES Bulbs
1 x 6 V Buzzer with connecting leads
1 x 3-6 V Electric Motor
5 x DPDT Slide Switch
10 x MES Lamp holders

Light Dependent Resistor

Product Code : SLE/PHY/71

This Light Dependent Resistor is housed in a robust clear plastic case. Encapsulated in a moisture resistant coating and enclosed in a plastic casing. Dark resistance of 1 MO. Cadmium sulphide light dependant resistor that is more specifically, a CdS photoconductive cell with a spectral response similar to that of the human eye.

•Housed in a robust plastic package with clear end window
•Resistance reduces as the light falling on the LDR increases

Technical Specification : 
Dimensions Top :
14.35 x 7 mm (dia. x d)
Length Pins : 9.53 mm
Dark resistance : 1 MΩ
Resistance @ 1ftc : 5.4 kΩ min, 12.6 kΩ max.
Max. voltage : 250 V peak AC or DC
Power dissipation : 250 mW max.
Operating temperature : –60°C to +75°C

Electricity Kit Microscience

Product Code : SLE/PHY/72

This kit provides students working on an individual basis with an opportunity to study the basic principles of electricity.

Topics covered with the kit include :
Batteries & Current Flow
Series & Parallel Circuits
Magnetic Effects & Chemical Reactions
Circuits : Direction
Electricity in the Home 

Technical Specification :
Combo plate is the circuit board
Ideal for data logging applications
Workbooks available
Components clip in to the springs inserted in the wells
Suitable for Key Stage 2 (Grade 4) and above

Electric Motor

Product Code : SLE/PHY/73

A low-cost miniature DC motor suitable for many applications including models, robotics and educational demonstration equipment. The two flat sides make the motor ideal for mounting on a PCB. Solder tag termination. Rotates counter clockwise when viewed from the shaft end. 
Operating voltage 1.5 to 4.5 V DC. 
Diameter : 20 mm; 
Shaft length: 9 mm; 
Shaft Diameter : 2 mm; 
Weight: approx 17 g; 
Width across flats : 15 mm.

Potentiometer

Product Code : SLE/PHY/74

24 SWG constantan wire stretched along a meter scale, subdivided in cm and mm, and clamped to stout plated brass end plates. Jockey included. The terminating strips are provided with heavy duty 4 mm socket terminals and the whole is mounted on a polished hardwood baseboard.

Technical Specification :
Dimensions :
1.13 mm x 80 mm x 50 mm approx

Wheatstone Bridge Four Gap

Product Code : SLE/PHY/75

This Wheatstone bridge has broad, heavily plated brass strips mounted on a polished hardwood base. The 24 SWG constantan wire is stretched along the top of a metre scale in mm and cm. Terminals with 4 mm sockets are provided. Supplied with jockey.

Technical Specification : 
Dimensions :
1130 x 80 x 50 mm

Knife Switch Double Pole

Product Code : SLE/PHY/76

Knife Switches on Bases
Double pole, Double throw.
A range of knife switches mounted on plastic bases, suitable for use in electricity circuits. The poles and blades are made of brass to ensure good electrical connections.

Lamp Holder

Product Code : SLE/PHY/77

Lamp Holder fitted with MES type bulb holder and terminals.

Pylons Kit

Product Code : SLE/PHY/78

Our Pylons pack contains 5 thick card sheets which once cut-out produces 5 pylons.

Simple Circuit Module Light Dependent Resistor Board

Product Code : SLE/PHY/79

Simple Circuit Modules :
LED Boards
Large light emitting diodes with series resistor of 220 ohms for p.d’s of up to 6 V.

An light dependent resistor, fully covered resistor of 10 ohms. In normal room conditions resistance of 250 ohms approx. Light Dependent Resistor Board

Jockey with Insulated Handle (Single)

Product Code : SLE/PHY/80

Jockey with Insulated Handle
For Wheatstone Bridge and Potentiometer work.

Overall length : 100 mm. Insulated handle with plated brass contact and 4 mm plug terminal.

Potentiometer Module, 1 Kohm

Product Code : SLE/PHY/81

Rotary linear potentiometer mounted on a channel box. Connection made to 4 mm sockets. Protection against student’s wrong connection by means of fast blow fuse. Choice of values. 1KΩ

LED, 5 mm, White

Product Code : SLE/PHY/82

Standard 5 mm LED available in a range of colors.
Color : White
Pack of 100

LED Bright Red

Product Code : SLE/PHY/83

LED, 5 mm
Standard 5 mm LED available in a range of colors.
Pack of 100
Color : Bright Red

Simple Circuit Module LED Board Green

Product Code : SLE/PHY/84

Simple Circuit Modules :
LED Board Green
Large light emitting diodes with series resistor of 220 ohms for p.d’s of up to 6 V.

Simple Circuit Module LED Board Red

Product Code : SLE/PHY/85

Simple Circuit Modules :
LED Boards Red
Large light emitting diodes with series resistor of 220 ohms for p.d’s of up to 6 V.

Demountable Transformer Accessory Set No. 1

Product Code : SLE/PHY/86

The Transformer accessory set is used to demonstrate that step down transformers can produce currents that are large enough to weld metals or boil water. Requires mains coil.

Worcester Circuit Board

Product Code : SLE/PHY/87

The new improved Worcester circuit board allows students to investigate the nature and properties of electricity. The detachable battery holders enable the construction of simple series and parallel circuits. The diode and resistor are mounted as the switch and builder so as to provide an easy and quick construction of circuits. The plugs and crocodile clips allow extension to outboard experiments. The phosphor - bronze connectors ensure long life and good electrical conduction.

Fundamentals of Electronics

Product Code : SLE/PHY/88

Introduce students to the basics of electronics.
This kit includes solder less electronics breadboard, switches, connection wires, transistors NPN and PNP, red and green light emitting diodes (LED), capacitors, diode and photo resistor, resistors, a buzzer, 9 volt battery and a Teacher’s Guide.

Mini Motor Unit

Product Code : SLE/PHY/89

A small motor which operates from 1.5 to 4.5 V DC.

Base approx : 88 x 70 mm.

For use with Solar Cell Unit.

Switches (Econ) with Fahnstock clips

Product Code : SLE/PHY/90

Pack of 25. Economy switch with Fahnstock clips.

LED Blue

Product Code : SLE/PHY/91

LEDs, 5 mm, Blue
Standard 5 mm LEDs available in a range of colors.
Pack of 100

Electricity Circuits Kit

Product Code : SLE/PHY/92

The Basic Electricity Kit has been designed as a low-cost, attractive and flexible alternative to the circuit-board approach to pupil investigations into simple circuits. The panels are then formed into circuits by connecting them together using 4 mm stackable leads. Each component such as a switch, rheostat, bulb holder, etc. is mounted on its own individual plastic panel with 4 mm sockets. This equipment is suited not just to teaching basic concepts about circuits, for key stage 2 students, but also has applications for further study into key stage 3 areas. Each kit is supplied in two polystyrene trays which keep the units organised.

Simple Circuit Module Push Switch

Product Code : SLE/PHY/93

Simple Circuit Modules :
Push Switch
On base, an on/off push button switch.

LED Boards
Large light emitting diodes with series resistor of 220 ohms for p.d’s of up to 6 V.

Contact Key (Push Switch)

Product Code : SLE/PHY/94

A single contact key mounted on base.
Comprising a plated spring arm with press knob, a contact stud, plated connecting strip and 4 mm terminals.

Electromagnet with Keeper

Product Code : SLE/PHY/95

U-shaped core of circular section with armature and carrying hook. Wound with insulated copper wire and provided with barrel connections for use with 4-6 volts DC. 110 x 9 mm (diameter). Complete with keeper.

Lenz’s Law – Open & closed loop

Product Code : SLE/PHY/96

Show how passing a magnet through a complete loop causes the device to move. Teaches Faraday’s law of induction as well as Lenz’ Law.
No movement at all occurs when using the split loop.

Eddy Current Unit

Product Code : SLE/PHY/97

Two masses drop down a 33 cm copper tube. One is steel, one is a neodymium magnet. Includes test masses. When students see the magnetic mass falls more slowly than the steel mass, you can introduce them to electrical eddy currents. The currents oppose downward motion through a moving magnetic field created by the falling neodymium magnet.

Force on a Conductor Apparatus

Product Code : SLE/PHY/98

A brass axle with plastic discs is free to roll along the rails and completes the electrical contact between them. Comprising a strong U-shaped magnet and a pair of brass rails with 4 mm socket terminals.

When the axle is placed on the rails between the poles of the magnet, and a power supply unit is connected, the axle is repelled and rolls along the rails away from the center of the magnetic field.

Electromagnetic Power Supply

Product Code : SLE/PHY/99

Low Voltage, high current power supply for uses with Westminster electromagnetic kits, Fleming’s apparatus, etc. 1-0-1 V nominal a.c.

Allows students access to 1 V a.c or 2 V d.c. Output is furnished by rectification of 2 V a.c (unsmoothed).Tolerates short circuit. Short-circuit current is 10 A. Transformer is protected by thermal fuses and slow-blow fuse. 40 A Shottky barrier diode for robust and efficient rectification.

Technical Specification :  
Input voltage
: 230 V ±10% 50 Hz
Outputs : 1-0-1 V a.c, 2 V d.c nominal
Dimensions : 208 x 155 x 115 mm (W x H x D).
Height including handle is 187 mm.

Induced Current Apparatus

Product Code : SLE/PHY/100

Consists of a primary coil of insulated copper wire wound upon a cylinder with terminals, a secondary coil wound upon a cylinder into which the primary coil fits. Complete with terminals. A soft iron core fits the cylinder of the primary.

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