Apparatus for Studying Circuits for Series and Parallel Connections (Product Code: SCL-359/021) is a demonstration circuit set used to compare how bulbs and cells behave when connected in series and in parallel, in school physics and general science lessons. Three bulbs, three 3–4.5 V batteries in their boxes and a 0–50 Ω rheostat let the teacher rebuild the circuit in front of the class. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Series and Parallel Circuit Apparatus Used For?

With three bulbs on hand, the difference between the two arrangements is easy to see. In series, the bulbs share the voltage, glow more dimly and all go out if one is removed; in parallel, each bulb receives the full battery voltage, glows brightly and keeps working when a neighbour is disconnected. Connecting the batteries themselves in series shows how cell voltages add, and the switch lets the class open and close the circuit cleanly each time.

The 0–50 Ω rheostat adds a variable resistance, so students can dim a bulb gradually and see how resistance limits current. Lay each circuit out clearly so the whole class can follow the connections, use the red and blue leads to keep the two sides of the supply distinct, and disconnect the batteries at the end of the lesson so they do not drain. As a physics demonstration kit for schools in India and abroad, it covers the circuit topics that come before formal Ohm's law work.

What to Specify When Ordering

• The number of sets needed for your classrooms.
• Whether spare bulbs or replacement batteries should be included.
• Extra 25 cm connecting leads if students will build circuits in groups.

OEM Manufacturer

ScienceLab is the name under which Jain Scientific Equipments Private Limited trades, and the company is the OEM of this series and parallel circuits apparatus. Sets are made up at its own licensed factory at Saha, Ambala, Haryana, India, and supplied direct from there to schools, colleges, institutions, dealers and importers.

Need spare bulbs, a replacement rheostat or a repeat order? The manufacturer handles it directly — ask us. Company information is on the ScienceLab profile.

Related Laboratory Equipment

Useful next steps and add-ons for circuit lessons:

• Apparatus for Studying the Dependence of Electrical Resistance on the Factors that Determine it — moves on to the resistance of wires.
• Apparatus for Studying f.e.m. and Internal Battery and Battery Resistance — explores the batteries themselves.
• MES Bulb Holder — holders for extra bulbs in student circuits.
• Ammeter Voltmeter — measures current and voltage in each arrangement.

The Laboratory Equipment category lists more electricity apparatus.

Frequently Asked Questions

What does the series and parallel circuits apparatus include?
The Apparatus for Studying Circuits for Series and Parallel Connections (SCL-359/021) includes three 3–4.5 V batteries with boxes, three bulbs, 6 pairs of 25 cm red and blue connecting wires, a 36 V DC power switch, a 0–50 Ω rheostat rated 1.5 A, a magnetic table and a demonstration table.

What difference between series and parallel does it show?
With the Apparatus for Studying Circuits for Series and Parallel Connections (SCL-359/021), bulbs in series share the voltage, glow dimmer and all go out if one is removed, while bulbs in parallel each get the full voltage and stay lit independently.

What is the rheostat used for?
The 0–50 Ω rheostat, rated 1.5 A, in the Apparatus for Studying Circuits for Series and Parallel Connections (SCL-359/021) adds variable resistance to the circuit, so students can dim a bulb gradually and see how resistance controls the current.

Does the apparatus need a mains power supply?
No mains supply is listed for the Apparatus for Studying Circuits for Series and Parallel Connections (SCL-359/021); it runs from its three 3–4.5 V batteries in their boxes. Disconnect the batteries after each lesson so that they last longer.

Who manufactures the Apparatus for Studying Circuits for Series and Parallel Connections?
The Apparatus for Studying Circuits for Series and Parallel Connections (SCL-359/021) is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Quotations and spares come directly from the manufacturer.

Can the apparatus be ordered in bulk or exported?
Yes. The Apparatus for Studying Circuits for Series and Parallel Connections (SCL-359/021) is available in multi-set quantities for schools, colleges, dealers and importers in India and international markets. Send your quantity and destination through the contact page for a quotation.

Request a Quote

For a quotation on this circuits apparatus, message us through the contact page or add it to your enquiry cart. You receive the quote straight from the manufacturer in Ambala.

Last updated: 24 September 2026

Electric Motors (Product Code: SCL-357/022) is a build-it-yourself electric motor set used to show how a current-carrying coil turns in a magnetic field, in school physics lessons on electromagnetism. Its parts come in multiples of six — six mild steel armature rods, six shafts and six support bases, with twelve iron magnets — alongside a 2–14 V AC/DC, 6 A power supply and a demonstration board. It is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Electric Motor Set Used For?

An electric motor turns electrical energy into rotation, and building one is the clearest way for students to understand why. The teacher can present the principle on the demonstration board first; students then assemble motors from the parts supplied — armature rods, shafts, support bases and magnets — and connect the power supply with the clamped wires. When current flows in the coil, the magnetic force on it produces a turning effect and the armature spins.

On the DC output, reversing the supply connections reverses the direction of rotation, and raising the voltage within the 2–14 V range makes the motor run faster — two effects students can test and explain with the motor rule. Start at the lowest voltage, keep fingers and loose hair away from spinning parts, and switch off before adjusting anything. As an electromagnetic kit for school physics in India and abroad, its multiples of six suit group practicals well.

What to Specify When Ordering

• The number of sets required for your classes.
• Whether spare magnets, levers or pins should be included.
• The delivery city or country, so packing and freight can be quoted.

OEM Manufacturer

Jain Scientific Equipments Private Limited, which sells under the ScienceLab name, is the OEM of the Electric Motors set. The set is made up and packed at the company's licensed factory at Saha, Ambala, Haryana, India, and supplied factory-direct to schools, colleges, dealers and importers.

When a magnet goes missing or a school needs more sets, replacement parts and repeat orders are dealt with by the manufacturer — ask us. More on the company is on the ScienceLab profile.

Related Laboratory Equipment

Other electromagnetism apparatus for the same lessons:

• Demonstration, Electric Motor — a ready-built motor for the front bench.
• St. Louis Motor — a classic open-frame motor for demonstrations.
• Apparatus for Studying the Production of Electricity by Induction — the generator effect, the reverse of the motor.
• Steel Horseshoe Magnet — an extra magnet for field demonstrations.

See the Laboratory Equipment category for further physics apparatus.

Frequently Asked Questions

What parts are included in the Electric Motors set?
The Electric Motors set (SCL-357/022) includes 6 mild steel rods with armature, 12 iron magnets, 6 support bases, 6 cylindrical shafts, 24 plastic levers, 12 pins, a copper wire coil, a cylindrical coil, 1 pair of wires with clamps, a 2–14 V AC/DC, 6 A power supply and a demonstration board.

What power supply does the set use?
The Electric Motors set (SCL-357/022) comes with a power supply device delivering 2–14 V AC/DC rated 6 A, connected to the motors with the pair of wires with clamps. Start at a low voltage and increase it gradually while the motor runs.

Is the set suitable for group work?
Yes. The parts of the Electric Motors set (SCL-357/022) come in multiples of six, such as six armature rods, six shafts and six support bases, which suits dividing a class into small assembly groups. Ask us if you need the quantity matched to a particular class size.

Why does the motor change direction when the leads are swapped?
In the Electric Motors set (SCL-357/022), reversing the DC supply connections reverses the current in the coil, so the magnetic force acts the other way and the armature turns in the opposite direction, a direct demonstration of the motor rule.

Who manufactures the Electric Motors set?
The Electric Motors set (SCL-357/022) is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Orders, spares and quotations are handled by the manufacturer directly.

Can the Electric Motors set be ordered in bulk or for export?
Yes. The Electric Motors set (SCL-357/022) is supplied in multiple sets to schools, colleges, dealers and importers in India and international markets. Share the quantity and delivery destination through the contact page and we will send a quotation.

Request a Quote

To receive a quotation for the Electric Motors set, send an enquiry on the contact page or add it to the enquiry cart. Quotes are prepared by the manufacturer, with no trader in between.

Last updated: 24 September 2026

Apparatus for Distributing Electric Charges (Product Code: SCL-353/027) is an electrostatics demonstration set used to show how electric charge is produced by rubbing, shared by contact and distributed over conductors, in secondary school physics lessons. Four metal spheres on plastic insulating handles, polyethylene and celluloid tapes, a friction cloth and a 200 mm gold-leaf electroscope let the class create charge and detect it. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Electric Charge Distribution Apparatus Used For?

Electrostatics lessons start with charging by friction: rubbing the polyethylene or celluloid tape with the friction cloth leaves the two materials with opposite charges, which students detect by bringing the charged object to the gold-leaf electroscope and watching the leaves spread. The metal spheres on their insulating handles then show how charge moves between conductors — touching a charged sphere to an uncharged one shares the charge between them, and the electroscope confirms the result.

The two aluminium cans take the lesson on to where charge sits on a conductor: tests with the insulated spheres show that charge gathers on the outer surface of a hollow can rather than inside it. Work in dry conditions, since humid air lets charge leak away quickly, hold the spheres only by their insulating handles, and discharge everything by touching it to earth between experiments. For schools stocking physics lab equipment in India and overseas, the set covers the core electrostatics topics taught in secondary school.

What to Specify When Ordering

• The number of sets needed for your physics laboratories.
• Spare tapes or friction cloths for heavy classroom use.
• Whether an additional electroscope should be quoted for a second demonstration bench.

OEM Manufacturer

The Apparatus for Distributing Electric Charges is manufactured by Jain Scientific Equipments Private Limited — ScienceLab to its customers — as the original equipment manufacturer. Registered with the Ministry of Corporate Affairs under CIN U29309HR2020PTC087597, the company assembles this electrostatics set at its factory at 449, HSIIDC Industrial Area, Saha, Ambala, which operates under Factory Licence AMB-ONLINE-CHD-J-414.

Schools, colleges, dealers and importers are supplied direct, and spare tapes, cans or a replacement electroscope can be requested from the manufacturer — ask us. Read more on the ScienceLab company profile.

Related Laboratory Equipment

Electrostatics items that complement this set:

• Gold Leaf Electroscope — a spare electroscope for a second demonstration bench.
• Friction Rod, Brass/Ebonite — classic rods for charging by rubbing.
• Van de Graaff Generator — larger charges for striking electrostatics demonstrations.
• Electrostatic Investigation — further electrostatics activities for students.

Browse more physics apparatus in the Laboratory Equipment category.

Frequently Asked Questions

What is included in the Apparatus for Distributing Electric Charges?
The Apparatus for Distributing Electric Charges (SCL-353/027) includes four metal spheres on plastic insulating handles, an insulating handle, an insulating handle for the electroscope plates with foil, polyethylene tape, nylon wrap, two aluminium cans, celluloid tape, a wire stirrer, a friction cloth, a chrome wire hook and a 200 mm gold-leaf electroscope.

How is electric charge produced with this set?
With the Apparatus for Distributing Electric Charges (SCL-353/027), charge is produced by friction: rubbing the polyethylene or celluloid tape with the friction cloth charges both materials oppositely, and the charge can then be transferred to the metal spheres or the electroscope.

What does the gold-leaf electroscope show?
The 200 mm gold-leaf electroscope in the Apparatus for Distributing Electric Charges (SCL-353/027) shows whether an object is charged: when charge reaches the electroscope, its leaves repel each other and spread apart, and the size of the spread gives a rough idea of the amount of charge.

Why do electrostatic experiments fail on humid days?
Moist air conducts charge away, so demonstrations with the Apparatus for Distributing Electric Charges (SCL-353/027) work far more reliably in a dry room. Keep the tapes, cloth and insulating handles clean and dry, and warm them gently if they feel damp.

Who manufactures the Apparatus for Distributing Electric Charges?
The Apparatus for Distributing Electric Charges (SCL-353/027) is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India, and is supplied directly to schools, dealers and importers.

Can the set be ordered in bulk or for export?
Yes. The Apparatus for Distributing Electric Charges (SCL-353/027) can be supplied in multi-set quantities to schools, colleges, dealers and importers in India and international markets. Send the quantity and destination through the contact page for a quotation.

Request a Quote

Ask for a quotation on this electrostatics set through the contact page, or add it to your enquiry cart with other physics items. The quotation comes from the manufacturer itself.

Last updated: 24 September 2026

Apparatus for Demonstrating the Propagation of Waves (Product Code: SCL-351/028) is a mechanical wave machine used to show how transverse and longitudinal waves travel, in school and college physics classrooms. Teachers use it to make wave motion visible: a handle turns a row of eccentric discs that move a series of metal rods across a 450 mm x 200 mm x 300 mm working range. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Wave Propagation Apparatus Used For?

In a wave motion lesson, the teacher turns the handle slowly so students can watch each rod rise and fall in turn while the disturbance itself moves along the row. The rods only move up and down, yet the pattern travels sideways — the defining idea of a transverse wave. The bent rods then show compressions and rarefactions moving in the direction of travel, the model students later apply to sound in air.

Seeing both wave types on one frame helps learners compare amplitude, wavelength and the direction of particle motion side by side. Turning the handle faster raises the frequency and the pattern moves along more quickly, a practical way to introduce the link between wave speed, frequency and wavelength. As school physics lab equipment, it is easiest to follow at eye level on a raised bench, with a chalk mark on one rod so the class can track a single particle.

OEM Manufacturer

Jain Scientific Equipments Private Limited, which trades as ScienceLab, is the OEM (original equipment manufacturer) of this wave propagation apparatus. It is made and assembled at the company's own licensed factory at Saha, Ambala, Haryana, India, rather than bought in from a trader. Schools, colleges, dealers and importers therefore deal directly with the maker, and questions about replacement rods, pulleys or repeat orders can be raised with the same team — ask us. Read more on the ScienceLab company profile.

Related Laboratory Equipment

Other apparatus teachers pair with this wave machine when building a complete lesson on waves:

• Apparatus for Demonstrating Waves with Elastic Springs — shows the same two wave types on long springs that students can handle themselves.
• Apparatus for Demonstrating the Phenomenon of Wave Propagation and Reflection — extends the topic to what happens when a wave reaches a boundary.
• Ripple Tank — moves from waves along a line to water waves spreading in two dimensions.
• Wave Form, Helix — a compact model for revising wave shape and wavelength.

Browse the full Laboratory Equipment category for more physics demonstration apparatus.

Frequently Asked Questions

What does the Apparatus for Demonstrating the Propagation of Waves show?
The Apparatus for Demonstrating the Propagation of Waves shows both transverse and longitudinal waves. Eccentric discs turned by a handle move a series of metal rods to form a transverse wave, while the bent rods produce a longitudinal wave for comparison.

How large is the working area of this wave apparatus?
The wave propagation range of the Apparatus for Demonstrating the Propagation of Waves measures 450 mm x 200 mm x 300 mm, a size a teacher can operate on the front bench while the whole class watches. Ask us for the packed size when planning shipping.

Does the wave propagation apparatus need a power supply?
The listing for the Apparatus for Demonstrating the Propagation of Waves gives voltage values of 0–6 V and a 15.6 mm vibrator alongside the hand-turned mechanism. Tell us how you plan to power it and we will confirm the supply it needs and whether one is included.

Who manufactures the Apparatus for Demonstrating the Propagation of Waves?
Jain Scientific Equipments Pvt Ltd (ScienceLab) is the OEM manufacturer of the Apparatus for Demonstrating the Propagation of Waves. It is made at the company's own factory at Saha, Ambala, Haryana, India, and supplied direct to institutions, dealers and importers.

Which classes is this wave demonstration apparatus suited to?
The Apparatus for Demonstrating the Propagation of Waves suits secondary school and college physics lessons on wave motion, where students must tell transverse from longitudinal waves before moving on to sound, light and the wave equation.

Can the wave propagation apparatus be ordered in bulk or for export?
Yes. ScienceLab supplies the Apparatus for Demonstrating the Propagation of Waves for single laboratories, multi-school projects and dealer stock in India and international markets. Share the quantity and destination through the contact page for a quotation.

Request a Quote

To order the Apparatus for Demonstrating the Propagation of Waves, send your quantity and delivery location through the contact page or add it to the enquiry cart. Quotations come direct from the manufacturer, so questions on packing and delivery are answered by the team that builds the apparatus.

Last updated: 24 September 2026

Apparatus for Demonstrating Waves with Elastic Springs (Product Code: SCL-349/029) is a two-spring wave demonstration set used to show longitudinal and transverse waves in school and college physics lessons. Its larger spring, 8 cm in diameter, can be extended up to 5 m across a floor or bench so pulses stay visible to a whole class, while a second 2 cm spring gives a narrower medium to compare. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Elastic Spring Wave Apparatus Used For?

Two students hold the ends of the large spring and stretch it along the floor. A quick sideways flick sends a transverse pulse along the coils, while a sharp push and pull along the axis sends a band of compressed coils travelling down the spring — a simple sound wave experiment that shows how air is squeezed and stretched as sound passes through it.

With one end held firmly, pulses can be seen reflecting and returning, and steady shaking at the right rate builds a standing wave. Because the springs differ in diameter and length, the 2 cm spring gives a second medium for comparing how pulses travel. Stretch the springs gradually, keep them off sharp edges, and release the tension slowly so the coils do not tangle.

What to Specify When Ordering

• How many sets you need — one for the teacher’s bench, or one per student group for hands-on work.
• Whether you need both springs (8 cm and 2 cm) or extra springs of one size for group practicals — ask us.
• The delivery city or country, so packing and freight can be quoted with the apparatus.

OEM Manufacturer

This spring wave set is manufactured by Jain Scientific Equipments Private Limited, the company behind the ScienceLab name, acting as OEM (original equipment manufacturer). Production takes place at its own licensed factory at Saha, Ambala, Haryana, India. Because buyers deal with the maker rather than a trading intermediary, requests for additional springs or repeat supply for new laboratories are handled by the same team — ask us. Company details are on the ScienceLab profile page.

Related Laboratory Equipment

Useful companions for a practical lesson on mechanical waves:

• Apparatus for Demonstrating the Propagation of Waves — a hand-turned wave machine that shows the same wave types at a steady pace.
• Slinky Spring — a single spring for extra student groups working at the same time.
• Apparatus for Investigating the Change of Frequency of Stationary Waves in a String — takes standing waves from a spring to a measured string experiment.
• Mini Ripple Tank — shows reflection and interference with water waves in two dimensions.

More physics apparatus is listed in the Laboratory Equipment category.

Frequently Asked Questions

What springs come with the Apparatus for Demonstrating Waves with Elastic Springs?
The Apparatus for Demonstrating Waves with Elastic Springs has two springs. Spring 1 is 8 cm in diameter, 13 cm long as listed, extends up to 5 m and weighs 0.6 kg; Spring 2 is 2 cm in diameter, 1 m long and weighs 0.5 kg.

How far can the large spring be stretched?
The large spring of the Apparatus for Demonstrating Waves with Elastic Springs can be extended up to 5 m. Keep within that length and stretch it gradually, because pulling a spring beyond its range can permanently open the coils and spoil later demonstrations.

How are transverse and longitudinal waves made with the springs?
With the Apparatus for Demonstrating Waves with Elastic Springs stretched out, a sideways flick of one end makes a transverse wave, while pushing and pulling the end along the spring’s length makes a longitudinal wave of compressions and rarefactions.

Who manufactures the Apparatus for Demonstrating Waves with Elastic Springs?
The Apparatus for Demonstrating Waves with Elastic Springs is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own factory at Saha, Ambala, Haryana, India, and is sold factory-direct to schools, colleges, dealers and importers.

How should the elastic springs be stored?
Store the Apparatus for Demonstrating Waves with Elastic Springs with each spring fully closed and tied loosely so the coils cannot tangle. Keep the springs dry and away from heavy objects that could bend individual coils.

What information is needed for a quotation?
To quote the Apparatus for Demonstrating Waves with Elastic Springs, ScienceLab needs the number of sets, any extra springs required and the delivery location in India or abroad. Send these details through the contact page.

Request a Quote

Ask for a price on the Apparatus for Demonstrating Waves with Elastic Springs through the contact page, or add it to the enquiry cart with other physics apparatus. The quotation comes straight from the manufacturer in Ambala.

Last updated: 24 September 2026

Sonometers (Product Code: SCL-347/030) is a wooden sonometer set used to study how the sound of a stretched wire depends on its length, tension and thickness, in school and college physics laboratories. It combines a 60 cm wooden resonance box with three steel cords, three movable bridges, a dynamometer, 500 g masses and tuning forks of 512, 480 and 440 Hz. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is a Sonometer Used For?

A sonometer verifies the laws of vibrating strings: the natural frequency of a wire falls as its vibrating length increases, rises with the tension, and falls as the wire gets thicker. Students slide the movable bridges to change the length, hang masses to set the tension and read that tension on the dynamometer, then switch between the 0.4 mm and 0.8 mm steel cords to see the effect of thickness.

In the classic resonance method, a small paper rider is placed on the wire and a struck tuning fork is pressed on the resonance box; the bridges are moved until the rider jumps off, showing the wire and fork share the same frequency. Repeating this with the 512, 480 and 440 Hz forks gives a set of readings for a length–frequency graph. This makes the set a standard sonometer for the physics lab in board-level and first-year college practicals.

What to Specify When Ordering

• The number of sonometers needed, usually one per practical group.
• Whether spare steel cords of 0.4 mm or 0.8 mm diameter should be quoted with the sets — ask us.
• Whether extra tuning forks or masses are required beyond those in the set.
• The delivery location, so packing for the wooden box can be planned.

OEM Manufacturer

ScienceLab is the brand of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) of this sonometer set. The wooden sonometer is built at the company's own licensed factory at Saha, Ambala, Haryana, India, and dispatched factory-direct to schools, colleges and laboratory dealers. Requests for replacement cords, bridges or matching sets for a new laboratory go straight to the maker — ask us. The company profile gives more background.

Related Laboratory Equipment

Items that support sonometer and sound experiments:

• Tuning Fork Set — more frequencies for a fuller length–frequency graph.
• Electromagnet with Transformer for Sonometer — for the experiment that finds the frequency of AC mains with a sonometer wire.
• Hangers with Slotted Weights — finer steps of tension when repeating readings.
• Resonance Tube Apparatus — the air-column counterpart for measuring the speed of sound.
• Sonometer, 3 Wire Pattern — an alternative sonometer design for comparison.

See the Laboratory Equipment category for the wider physics range.

Frequently Asked Questions

What is included in the Sonometers set?
The Sonometers set includes a wooden sonometer of 110 x 10 x 8.5 cm with a 60 cm resonance box and scales, a dynamometer, two 0.4 mm and one 0.8 mm steel cords, three movable bridges, masses of 500 g + 6 x 500 g, three tuning forks with a hammer, and a scale.

Which tuning fork frequencies come with the Sonometers?
The Sonometers set comes with tuning forks of 512, 480 and 440 Hz and a hammer to strike them. Three frequencies let students take several resonance readings and plot how the resonating length changes with frequency.

Why does the sonometer have steel cords of two diameters?
The Sonometers set has two 0.4 mm steel cords and one 0.8 mm steel cord so students can compare wires of different thickness under the same length and tension, showing that a thicker wire vibrates at a lower frequency.

How is the wire tension set and measured?
On the Sonometers set, tension is applied by hanging the supplied masses (500 g + 6 x 500 g) from the wire, and the dynamometer is used to read the tension force, so students can vary it step by step during the experiment.

Who manufactures the Sonometers?
The Sonometers set is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own factory at Saha, Ambala, Haryana, India. Institutions, dealers and importers buy it directly from the manufacturer.

Can the Sonometers be supplied for several laboratories at once?
Yes. ScienceLab quotes the Sonometers set for single schools, multi-lab projects and dealers in India and international markets. Send the quantity, any spare cords or forks needed and the delivery location through the contact page.

Request a Quote

For a price on the Sonometers set, use the contact page or place it in the enquiry cart. Quotations are prepared by the manufacturer itself, so questions about the set's contents can be settled in the same reply.

Last updated: 24 September 2026

Demonstration Device of an Alarm from a Clock Under a Bell (Product Code: SCL-345/031) is a bell-jar vacuum apparatus used to prove that sound needs a medium to travel, in school physics lessons on sound. An electric bell rings inside a glass cage while a vacuum pump draws out the air, so the class hears the ringing fade even though the bell can still be seen working. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Key Details

What Is the Bell Under a Glass Jar Demonstration Used For?

This is the classic “alarm clock under a bell jar” experiment, built here around an electric bell. The bell is connected through the rubber plug to the power source outside, switched on so everyone hears it clearly, and then the vacuum pump steadily removes air from the glass cage. As the air thins the sound grows faint, yet the striker keeps moving; letting air back in brings the ringing back.

The result shows that sound is a mechanical wave that needs particles to carry it, unlike light, which still reaches the students’ eyes through the evacuated jar. It is a staple of physics lab equipment for secondary classes studying sound. Check the glass for chips before each use, keep a safety screen or a clear distance while the jar is under vacuum, and let air in slowly before lifting the cage.

What to Specify When Ordering

• The number of demonstration sets — usually one per physics laboratory.
• The mains supply at your site, so the power source and vacuum pump arrangement can be confirmed — ask us.
• Whether a spare glass cage or rubber plug should be quoted for breakage cover.

OEM Manufacturer

Jain Scientific Equipments Private Limited, trading as ScienceLab, is the OEM (original equipment manufacturer) that assembles this bell-in-vacuum demonstration at its own licensed factory at Saha, Ambala, Haryana, India. The company is a registered MSME manufacturer (Udyam UDYAM-HR-01-0003714), and international consignments move under its Importer-Exporter Code AAECJ8618A issued by the DGFT. Schools, dealers and importers get quotations and after-sales answers from the maker itself; see the ScienceLab profile.

Related Laboratory Equipment

Related items for sound and vacuum demonstrations:

• Bell In Glass Jar and Base — an alternative bell-jar arrangement for the same experiment.
• Vacuum Pump with Pressure Gauge — lets students relate the fading sound to a falling pressure reading.
• Vacuum Pump, Hand — a manual pump for other air-pressure experiments.
• Tuning Fork on Resonance Box — follows on by showing how sound travels through air and solids.

The Laboratory Equipment category lists more demonstration apparatus.

Frequently Asked Questions

What does the Demonstration Device of an Alarm from a Clock Under a Bell show?
The Demonstration Device of an Alarm from a Clock Under a Bell shows that sound cannot travel through a vacuum. As air is pumped out of the glass cage, the electric bell becomes harder to hear while it can still be seen ringing.

What is included with this bell-in-vacuum device?
The Demonstration Device of an Alarm from a Clock Under a Bell includes a glass cage, an electric bell, a rubber plug with two sockets, a glass tube, an electric power source, a black 1 m conductor, a red 1 m connecting wire and a vacuum pump.

Why does a little sound remain after pumping?
With the Demonstration Device of an Alarm from a Clock Under a Bell, a faint sound may remain because a classroom pump cannot remove every air particle, and some vibration travels through the plug and leads. The sharp drop in loudness is the key observation.

Who manufactures the Demonstration Device of an Alarm from a Clock Under a Bell?
The Demonstration Device of an Alarm from a Clock Under a Bell is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own factory at Saha, Ambala, Haryana, India, and supplied direct to schools, dealers and importers.

How should the glass cage be handled safely?
Inspect the glass cage of the Demonstration Device of an Alarm from a Clock Under a Bell for cracks before every use, keep students at a safe distance while it is under vacuum, and release the vacuum slowly before removing the cage.

How can a school get a quotation for this device?
To get a quotation for the Demonstration Device of an Alarm from a Clock Under a Bell, send the number of sets, your mains supply details and the delivery location through the contact page. ScienceLab supplies India and international markets.

Request a Quote

Request a price for the Demonstration Device of an Alarm from a Clock Under a Bell on the contact page or add it to your enquiry cart. The quotation is issued directly by the manufacturer, with no trading intermediary in between.

Last updated: 24 September 2026

Optics Kit (Product Code: SCL-341/033) is a combined optics experiment kit used to teach reflection, refraction, lenses, colour and vision in school and college physics laboratories. Alongside lenses, mirrors, a glass prism and a 2 m wooden optical bench, it includes a light sensor reading 0–2 000 lux or 0–30 000 lux that connects to a smart board, plus an eye model showing sight defects and their correction. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Optics Kit Used For?

The kit covers a full optics unit on one 2 m bench: forming images with the plano-convex lens, showing how the plano-concave lens spreads light, comparing reflection from flat and curved mirrors, and bending a beam through the glass prism and the parallel-sided plate. The rotating colour disc shows that white light is a mixture of colours, and the eye model links lenses to vision, including how spectacles correct short and long sight.

The light sensor adds measurement to the demonstrations. Displayed live on a smart board, its readings let a class see how illumination falls as the sensor moves away from a lamp or how much light a lens gathers, which suits optics lab equipment used for data-based practicals. Store lenses and mirrors in their positions after use and clean glass surfaces only with a soft lens cloth.

What to Specify When Ordering

• The number of kits — one per demonstration bench or per student group.
• The smart board or display you use, so the light sensor connection can be confirmed before dispatch — ask us.
• Any extra lenses, mirrors or prisms wanted as spares for group work.

OEM Manufacturer

ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) that makes the optical parts of this optics kit and builds the complete kit at its own licensed factory at Saha, Ambala, Haryana, India. The smart-board light (lux) sensor is not made by ScienceLab; it is a sourced electronic component that is packed with the kit.

Buying from the manufacturer means one point of contact for the whole kit, from the wooden bench to the eye model, and for any later requests about replacement parts — ask us. Schools, colleges, dealers and importers are supplied factory-direct. Learn more on the company profile.

Related Laboratory Equipment

Optics items that extend or supplement this kit:

• Optics Kit II — a lens-and-mirror set with a translucent screen and letter objects for image-formation practicals.
• Optical Bench with 3 Stands — an extra bench so more groups can work at once.
• Prism — additional prisms for dispersion and refraction experiments.
• Concave Mirror — spare curved mirrors for focal-length measurements.

Browse the Laboratory Equipment category for further optics apparatus.

Frequently Asked Questions

What is included in the Optics Kit?
The Optics Kit includes a light sensor, a power source, a glass prism, plano-concave and plano-convex lenses, a parallel-faced glass plate, flat and curved mirrors, a 2 m wooden optical bench, a rotating colour disc, an eye model, a magnifying glass and an instruction manual.

What are the specifications of the Optics Kit light sensor?
The light sensor in the Optics Kit measures 0–2 000 lux with 0.5 lux resolution or 0–30 000 lux with 10 lux resolution, takes over 1000 measurements per second, and connects to a smart board controlled by touch screen.

Will the Optics Kit sensor work with our smart board?
The Optics Kit light sensor is listed as connecting to a smart board with touch-screen control. Because classroom boards differ, tell us your board model when you enquire and we will confirm the connection before the kit is dispatched.

What does the eye model in the Optics Kit show?
The eye model in the Optics Kit shows how the eye works, including sight defects and their correction with lenses. It is mounted on a wooden base of 320 x 180 mm, making it easy to set beside the optical bench during lessons.

Who manufactures the Optics Kit?
The Optics Kit is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, which makes its optical parts and the complete kit at its own factory at Saha, Ambala, Haryana, India. The smart-board light (lux) sensor is a sourced electronic component. The kit is supplied direct to schools, colleges, dealers and importers.

Is an instruction manual supplied with the Optics Kit?
Yes, the Optics Kit is provided with an instruction manual, which helps teachers set up the bench, lenses, mirrors and sensor for each experiment. Questions on specific experiments can be sent through the contact page.

Request a Quote

To price the Optics Kit, send the quantity, your smart board details and the delivery location via the contact page, or add it to the enquiry cart. The quotation comes straight from the manufacturer, which supplies India and international markets.

Last updated: 24 September 2026