Quick Answer: The Wave Apparatus Demo shows both longitudinal and transverse wave motion: turning its handle drives a series of cams that make 16 vertical rods rise and fall in a sine-wave pattern.
Last updated: October 2026
Key Features
16 vertical rods driven by a series of cams
Hand-turned handle converts circular rotary motion into vertical motion
Rod tips trace out a transverse wave
Bent rods show longitudinal waves
Scale behind the handle marks the rotation in degrees
About This Product
As the handle turns, eccentric discs lift and lower the metal rods so that their tips follow a sine wave, much like a ripple in a water tank or a vibrating guitar string. The bent rods give a longitudinal wave instead. With the degree scale behind the handle, the phase relationship between the rotary and vertical motions can be studied. The Wave Apparatus Demo is available for supply within India and for export to Gambia, Sudan, Chad, South Africa, Botswana and Bulgaria.
Frequently Asked Questions
Q1. How does the apparatus show phase? A scale placed behind the handle divides the rotary motion into degrees of rotational angle, so the relationship, or phase, between the rotary and vertical motions can be studied.
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