Transverse and Longitudinal Wave using Slinky Physics Lab
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Product Code : SCL-PL-12126
Transverse and Longitudinal Wave using Slinky Physics Lab (SKU SCL-PL-12126) is a flat-wire steel spring set for showing both kinds of mechanical wave on a bench or floor. A sideways flick sends a transverse pulse; pushing coils together sends a compression. It suits Class 9 and Class 11 wave lessons. The spring and its clamp are manufactured by Science Lab Supplies at Plot 448, HSIIDC Industrial Area, Saha, Ambala, and quoted directly to schools, colleges, tender contractors and trade distributors.
Specifications
Every dimension and material of the wave spring set is entered in the table below. In short, it is a flat-profile helical coil of hardened spring steel that lies flat on a bench, measures about 150–200 mm relaxed, stretches to about 3 m without permanent distortion and has deburred wire ends.
| Specification | Value |
|---|---|
| SKU | SCL-PL-12126 |
| Spring | Flat-profile helical coil |
| Material | Hardened spring steel |
| Material option | Resilient polymer (confirmed on the quotation) |
| Relaxed length | 150–200 mm (nominal) |
| Maximum extension | Up to 3 m without permanent distortion |
| Working stretch | About 2–3 m for demonstrations |
| Ends | Deburred, smooth wire tips |
| Anchor | Heavy-duty edge-mounting clamp for a bench or stand |
| Documentation | Instruction booklet with illustrated experiment layouts |
| Application | Wave propagation, frequency and acoustic studies |
| Level | Elementary science, high school physics, STEM training centres |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Flat-Wire Wave Spring
Stretched along a bench, the spring gives a large, slow wave that a whole class can follow, which makes the difference between transverse and longitudinal motion obvious. It fits NCERT Class 9 sound, Class 11 waves, and introductory college physics demonstrations of reflection and wavelength.
- Class 9 science: compressions and rarefactions as a model of sound.
- Class 11 physics: transverse pulses, wave speed, frequency and wavelength, timing a pulse with School Digital Stopwatches over a length marked with a Wooden Ruler 1 Metre.
- Reflection of a pulse at the clamped end, including phase inversion at a fixed boundary.
- Showing that moving the free end faster shortens the wavelength.
Never release a stretched spring suddenly: the snap-back can tangle the coils or pinch skin.
Standard Scope of Supply
Each set includes one flat-wire steel wave spring, 150–200 mm long when relaxed, that stretches up to 3 m without permanent distortion and has deburred, smooth wire tips; one heavy-duty edge-mounting anchor clamp so a single person can run the demonstration; and a classroom instruction booklet with illustrated experiment layouts.
Packing, MOQ and Lead Time
Order one spring for demonstration or enough for every bench group; the quotation from Science Lab Supplies sets out packing, delivery time and price for that number. Other school physics lab equipment in India from the wave range can be added to the same quotation.
Registered with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Tanzania, Uganda, the UAE, Saudi Arabia, Oman and the Philippines. Springs for a class can be priced by writing in on the contact page or by listing them in the enquiry cart; school tenders are handled through the lab tender page.
Frequently Asked Questions
How is a longitudinal wave made with the spring?
Gather a few coils at the free end and push them forward along the spring’s length. A band of close coils followed by wider gaps travels down the spring, much as compressions and rarefactions carry sound through air.
How far can the spring be stretched?
It can be extended to about 3 m without permanent distortion. Pulling it further can warp the coils, so keep demonstrations within that length.
Why is a flat wire used?
Flat wire spreads the spring’s weight over a wider contact area, which cuts sliding friction on the bench so pulses travel further and stay clear for longer.
Is Science Lab Supplies the manufacturer or a trader?
This wave spring set comes from the company’s own factory in Saha, Ambala, so Science Lab Supplies is the manufacturer, and a request for a quotation reaches the maker directly rather than a dealer.
Related Wave Demonstration Apparatus
A spring shows waves in a real medium; the items below show the same ideas with cams, other springs, a vibrating string or water, so what was seen on the bench can be checked against a model. All come from the Physics Lab range and can share one quotation with the spring.
- Apparatus for Demonstrating Waves with Elastic Springs — includes an 8 cm diameter spring that extends up to 5 m.
- Wave Motion Powell’s Wave Demonstrator — offset cams or bent wire linkages in a cast alloy and hardwood frame.
- Wave Motion Apparatus Physics Lab — hand-crank model measuring 600 x 150 x 300 mm.
- Wave Machine — 24 rods with plastic tips, eight of them turned at 90 degrees.
- Apparatus for Demonstrating the Propagation of Waves — 450 x 200 x 300 mm wave range on eccentric discs.
- Mechanical-Wave Apparatus Package — 7 ft elastic cord and a mechanical wave driver for string waves.
- Melde’s String Vibration Apparatus — electromechanical vibrator and pulley for standing waves on a cord.
- Ripple Tank kit — projects water waves onto a 30 x 33 cm screen.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 22 October 2026
