Apparatus for Investigating the Change of Frequency of Stationary Waves in a String Manufacturer,Supplier and Exporter in India

Apparatus for Investigating the Change of Frequency of Stationary Waves in a String (Product Code: SCL-207/048) is a wave motion kit used to set up standing waves on a stretched cord and study how their frequency depends on tension and length in school and college physics labs. A signal generator drives a wave generator, while hooked masses of (50–100) g hung over a fixed pulley tension the cord. The apparatus is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Stationary Waves in a String Apparatus Used For?

This is the classic Melde-type experiment. The cord runs from the wave generator, over the bridge and the fixed pulley, to the hooked masses. As the frequency from the signal generator is raised slowly, the cord suddenly settles into one, two, three or more stable loops, with clear nodes and antinodes. Each of these resonant frequencies follows f = (n/2L)√(T/μ), where L is the vibrating length, T the tension and μ the mass per unit length of the cord.

Students can hold the length fixed and change the hanging mass to see the frequency for a given loop count rise with tension, or move the bridge to change L and watch the frequency fall as the length grows. Count loops only when the pattern is steady, measure L from the bridge to the pulley, and keep the masses clear of the floor. The kit is a compact piece of physics lab equipment for school practicals on waves and resonance.

What to Specify When Ordering

• Number of apparatus sets for your laboratory.
• Your mains supply details, so the signal and wave generators can be matched to it.
• Whether you want additional (50–100) g hooked masses or spare cord for more tension settings.

OEM Manufacturer

Jain Scientific Equipments Private Limited, known by its trading name ScienceLab, is the OEM (original equipment manufacturer) of this stationary waves apparatus. It is built at the company’s own licensed factory at Saha, Ambala, Haryana, India, and sent directly from there to schools, colleges, institutions, dealers and importers, so buyers are never dealing with a reseller.

If you later need a replacement cord, bridge or extra masses, the request goes straight to the maker — just ask us. Read more about the company on the ScienceLab profile page.

Related Laboratory Equipment

Useful additions for string-wave and resonance experiments:

• Signal Generator and Amplifier — an alternative driver for vibration experiments.
• Vibration Generator — a spare mechanical driver for a second station.
• Pulley, Bench Mounting, Ball Bearing — a low-friction pulley for the tensioning cord.
• Sonometer, Simple Pattern — studies string vibration with tuning forks.
• Wave Form, Helix — demonstrates longitudinal and transverse wave shapes.

More apparatus is available in the Laboratory Equipment category.

Frequently Asked Questions

What is included with the Apparatus for Investigating the Change of Frequency of Stationary Waves in a String?
The Apparatus for Investigating the Change of Frequency of Stationary Waves in a String includes a wave generator, an input-signal generator, a cord or elastic thread, a set of (50–100) g masses with hook, a fixed pulley and a connecting bridge.

What does the stationary waves apparatus demonstrate?
The stationary waves apparatus SCL-207/048 demonstrates standing waves on a stretched cord: at certain frequencies the cord forms stable loops with fixed nodes and antinodes. Students investigate how these resonant frequencies change with the tension from the hanging masses and with the vibrating length set by the bridge.

How is the tension in the cord changed?
In the Apparatus for Investigating the Change of Frequency of Stationary Waves in a String, the cord passes over a fixed pulley to a hook carrying masses from the (50–100) g set. Adding or removing masses changes the tension, which raises or lowers the frequency needed for each loop pattern.

What is the connecting bridge for?
The connecting bridge in the stationary waves apparatus SCL-207/048 defines one end of the vibrating section of the cord. Moving it changes the vibrating length L, so students can show that a longer cord needs a lower frequency to form the same number of loops.

Who manufactures the Apparatus for Investigating the Change of Frequency of Stationary Waves in a String?
This stationary waves apparatus, code SCL-207/048, is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Quotations, repeat orders and spare-part enquiries are handled directly by the manufacturer.

Can the stationary waves apparatus be ordered for several labs or for export?
Yes. The Apparatus for Investigating the Change of Frequency of Stationary Waves in a String can be quoted in multiple sets for schools, colleges, dealers and importers in India and international markets. Share quantities, mains supply details and destination on the contact page.

Request a Quote

Get a quotation for the Apparatus for Investigating the Change of Frequency of Stationary Waves in a String (SCL-207/048) through our contact page, or add it to the enquiry cart. You receive the quotation directly from the manufacturer.

Last updated: 24 September 2026