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. Science Lab Supplies manufactures the set at Plot 448, HSIIDC Industrial Area, Saha, Ambala, and ships it straight to schools, colleges, tender contractors and trade distributors.
Specifications
The spring is a flat-profile helical coil of hardened spring steel, which lies flat on a bench and lets pulses travel a long way before they fade. It measures about 150–200 mm when relaxed and can be stretched to about 3 m without permanent distortion. The wire ends are deburred for handling.
| Parameter | Value |
|---|---|
| SKU | SCL-PL-12126 |
| Spring | Flat-profile helical coil |
| Material | Hardened spring steel |
| Relaxed length | 150–200 mm (nominal) |
| Maximum extension | Up to 3 m without permanent distortion |
| Ends | Deburred wire tips |
| Anchor | Edge-mounting clamp for bench or stand |
| 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.
- 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, one heavy-duty edge-mounting anchor clamp so that 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. Reach the team from the contact page, place items in the enquiry cart, or find tender guidance on 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?
The set is made by Science Lab Supplies, a science apparatus manufacturer in India, at its factory in Saha, Ambala; buyers deal with the manufacturer directly when they request a quotation.
Related Wave Demonstration Apparatus
A spring shows waves in a real medium; the items below show the same ideas with cams, other springs or a wider wave package, so students can check what they saw on the bench against a model. All four can share one quotation.
- Apparatus for Demonstrating Waves with Elastic Springs — two springs of different diameters for longitudinal and transverse waves.
- Wave Motion Powell’s Wave Demonstrator — hand-cranked model with coloured marker spheres.
- Wave Motion Apparatus Physics Lab — cam-driven model with 30 indicator rods.
- Mechanical-Wave Apparatus Package — Chladni plates, a spring and a cord for wider wave studies.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
