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 manufactures the apparatus at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and the factory itself prepares quotations for schools, colleges, tender contractors and distributors.
Specifications
Spring sizes, weights and the cam model's features are given one per row below. In short, an 8 cm spring stretches from 13 cm to as much as 5 m, a 2 cm spring is 1 m long, and turning the handle makes 16 rods rise and fall in a sine pattern read against a degree scale.
| Specification | Value |
|---|---|
| SKU | SCL-PL-11837 |
| Spring 1 diameter | 8 cm |
| Spring 1 length | 13 cm |
| Spring 1 maximum extension | Up to 5 m |
| Spring 1 weight | 0.6 kg |
| Spring 2 diameter | 2 cm |
| Spring 2 length | 1 m |
| Spring 2 weight | 0.5 kg |
| Cam model drive | Handle turning a series of cams |
| Vertical rods | 16, moving 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 out to several metres, the large spring shows pulses, reflection and standing waves, and the 1 m spring gives a shorter second medium. 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.
- Estimating pulse speed along the stretched spring with a Digital Stopwatch and marking distances with a Wooden Ruler 1 Metre.
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. For the spring wave set, quantities can be sent through the contact page or placed in the enquiry cart, and anyone buying by tender can check the lab tender page.
Frequently Asked Questions
How long do the springs stretch?
Spring 1, 8 cm in diameter and weighing 0.6 kg, can be extended from 13 cm up to 5 m. Spring 2, 2 cm in diameter and weighing 0.5 kg, 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?
Springs and cam model for this wave set are supplied from the Science Lab Supplies works in Saha, Ambala, India, where the apparatus is manufactured, so the quotation reaches you 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 Physics Lab items sit naturally beside the spring apparatus: other rod-type and lever wave models, a crankshaft demonstrator, a ripple tank for water waves, a wave package with Chladni plates and a string-vibration set. All of them can share one quotation with this apparatus.
- Apparatus for Demonstrating the Propagation of Waves — rods on eccentric discs over a 450 x 200 x 300 mm section.
- Wave Machine — 24 rods with highlighted tips and a handle marked in degrees.
- Wave Motion Apparatus Physics Lab — interconnected metal levers modelling harmonic motion and phase shifts.
- Wave Motion Powell’s Wave Demonstrator — crankshaft model of transverse and longitudinal propagation.
- Ripple Tank kit — wave dippers, projection mirror and electronic stroboscope.
- Mechanical-Wave Apparatus Package — longitudinal-wave spring, 7 ft elastic cord and a mechanical wave driver.
- Melde's String Vibration Apparatus — relates string tension, frequency and linear mass density.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 22 October 2026
