Apparatus for Demonstrating Waves with Elastic Springs
Product Code : SCL-PL-11837
Apparatus for Demonstrating Waves with Elastic Springs (SKU SCL-PL-11837) combines two long elastic springs with a hand-cranked cam model of 16 vertical rods to show longitudinal and transverse waves and the phase link between circular and wave motion. It suits Class 9 and Class 11 physics and college wave demonstrations. Science Lab Supplies makes the apparatus in its Saha, Ambala factory (Plot 448, HSIIDC Industrial Area) in India; as manufacturer it supplies schools, colleges, tender contractors and distributors directly.
Specifications
Spring 1 is 8 cm in diameter and stretches from 13 cm to as much as 5 m; spring 2 is 2 cm in diameter and 1 m long. On the cam model, turning the handle makes 16 rods rise and fall in a sine pattern, and a degree scale behind the handle measures the rotation angle.
| Parameter | Value |
|---|---|
| SKU | SCL-PL-11837 |
| Spring 1 | 8 cm diameter; 13 cm length, extendable up to 5 m; weight 0.6 kg |
| Spring 2 | 2 cm diameter; 1 m length; weight 0.5 kg |
| Cam model | Handle-driven cams moving 16 vertical rods in sine-wave motion |
| Longitudinal waves | Shown with the bent rods |
| Phase scale | Degree scale behind the handle |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Elastic Spring Wave Apparatus
Stretched across the floor or a bench, the large spring shows pulses, reflection and standing waves, while the smaller spring suits bench-top work. The cam model links circular rotation to vertical oscillation, and its degree scale lets students read the phase between the two motions.
- Class 9 science: longitudinal waves, compressions and rarefactions in the spring.
- Class 11 physics: transverse and longitudinal waves, phase, and waves as rotary motion projected onto a line.
Transverse motion is seen at the rod tips. Hold both ends of a stretched spring firmly so it cannot snap back.
Standard Scope of Supply
The apparatus comprises spring 1 (8 cm diameter, 0.6 kg), spring 2 (2 cm diameter, 1 m, 0.5 kg) and the handle-driven cam model with 16 vertical rods, bent rods for longitudinal waves and the degree scale. Optional accessories, if any, are listed on the quotation.
Packing, MOQ and Lead Time
One apparatus for a demonstration table or a number of them for a department can be quoted. The quotation specifies the packing, delivery time and price for that order, and extra physics lab equipment in India from the wave range can be listed with it.
Using its Importer-Exporter Code, Science Lab Supplies can ship to buyers in Kenya, Ghana, Ethiopia, Tanzania, Uganda and the UAE. Reach us through the contact page, save a shortlist in the enquiry cart, or see the lab tender page if you are buying by tender.
Frequently Asked Questions
How long do the springs stretch?
Spring 1, 8 cm in diameter, can be extended from 13 cm up to 5 m. Spring 2, 2 cm in diameter, has a length of 1 m.
What is the cam model for?
Turning its handle makes 16 rods follow a sine wave, showing how circular motion produces wave motion; the degree scale lets students study the phase between them.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies manufactures the apparatus in its own Saha works near Ambala, India. Buyers therefore receive quotations from the producer, with no agent in between.
How does it compare with the Apparatus for Demonstrating the Propagation of Waves?
That model uses eccentric discs, a 0–6 V vibrator and aluminium pulleys. This apparatus adds two elastic springs and a phase scale on its 16-rod cam model.
Related Wave Motion Equipment
These four Physics Lab items sit naturally beside the spring apparatus: another rod-type wave model, a slinky set, a wave motion apparatus and a ripple tank for water waves. All can share one quotation.
- Transverse and Longitudinal Wave using Slinky — spring waves with a slinky.
- Apparatus for Demonstrating the Propagation of Waves — eccentric-disc rod model.
- Wave Motion Apparatus — another wave motion model.
- Ripple Tank kit — waves on water.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
