Resonance Apparatus

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This simple, yet effective demonstration gives students a deeper understanding of the concept of resonance, while showing them how to calculate the speed of sound using only a tuning fork and water.

  • Buy 20 for $116.00 each and save 10%

Determining the speed of sound in the lab is always a student favorite. Most find it hard to believe that they could possibly calculate the speed of sound accurately using only a tuning fork and water. This simple, yet intriguing demonstration shows just how easy it can be. Partially fill the resonance tube with water. Sound a tuning fork over the open end of the tube. Then adjust the water level until the tube resonates at the same frequency. As the water level changes in the tube, a standing wave produces an antinode at the top of the tube that causes resonance. The speed of sound can then be calculated using the water level and the frequency. Measurement markings on the tube provide accurate results in calculating the classic 1/4 wavelength produced in a closed cylinder. Students can also determine the frequency of an unknown tuning fork by using the speed of sound in air and the height of water in the tube.

•Cast Iron Support Stand: Base- 8.7"(220mm) x 5.8"(145mm), Rod- 36"(910mm) Long x 0.5"(12.5mm) dia.
• Glass Tube: 39"(100cm) long x 1.5"(38mm) dia.
• Graduations: 0 to 90cm x 1mm
• 1 Tuning Fork (512Hz High C) 
• Instructions included

waning Products being sold are not toys. They are for Educational / Laboratory use only. They are not for use by children 12 and under.
Product Name SKU Price Qty


Sympathetic Tuning Fork Set
Item # P7-6000
Sound Pipe
Item # P7-7200
Singing Rods (Set of 2)
Item # P7-7250
Set of 8 Boomwhackers
Item # P7-7400
Resonance Bowl
Item # P7-7510
Tuning Forks Group
Item # tuningforks_group
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