Resonance Apparatus Manufacturer,Supplier and Exporter in India
Product Code : ILS-SAR-11748
Indian Lab Suppliers supplies the Resonance Apparatus (Product ID: 11748) as part of its sound and resonance range. A graduated tube partly filled with water, used with a tuning fork to measure the speed of sound in air.
Quick Answer
Partly fill the tube with water, hold a sounding tuning fork over the open end and adjust the water level until the air column resonates loudly. At the first resonance there is a displacement node at the water surface and an antinode near the open end, so the air column is about a quarter of a wavelength long. Reading the column length L from the tube markings gives the speed of sound as v = 4fL, with a small end correction for precise work. With the speed of sound known, students can also find the frequency of an unknown fork. Please confirm which tuning forks and accessories are included at quotation.
Key Specifications
| Parameter | Detail |
|---|---|
| Tube | Graduated, closed at the bottom by the water column |
| Method | Water level adjusted to find resonance |
| Measures | Speed of sound in air; frequency of an unknown fork |
Where This Is Used
A standard school and college practical. Use it with the Sympathetic Tuning Fork Set (Product ID: 11744); for a qualitative resonance demonstration see the Sound Pipe (Product ID: 11742). A close variant is the Resonance Apparatus (Product ID: 14559). Browse the full Sound and Resonance range or related Wave Motion products.
Frequently Asked Questions
How long is the air column at first resonance?
About a quarter of the wavelength.
How is the speed of sound calculated?
v = 4fL, where f is the fork frequency and L the air-column length.
Can it find an unknown frequency?
Yes, from the known speed of sound and the resonance length.
Related Categories
Sound and Resonance · Wave Motion · Physics Lab Equipment
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