Quick Answer: The Wave Motion Apparatus 18 Pulleys is a manually operated physics model in which 18 pulleys or linked sections move in sequence to show how a wave travels, with crests, troughs and phase difference visible.
Last updated: October 2026
Key Features
18 pulleys or linked moving sections form a visible wave pattern.
Demonstrates transverse wave motion, amplitude, wavelength and frequency.
Shows energy travelling through a medium while the elements oscillate about their positions.
Explains crest, trough, phase difference and periodic motion.
No electricity required for the standard manual demonstration.
About This Product
When the apparatus is operated by hand, the disturbance passes from one section to the next and a wave pattern forms along the row. This turns abstract wave diagrams into observable motion and shows energy transfer without permanent transfer of matter. Teachers use it for classroom demonstrations, school physics practicals and science exhibition displays, where students compare the motion with textbook wave diagrams. Besides buyers across India, the Wave Motion Apparatus 18 Pulleys can be exported to institutions in Afghanistan, Bosnia and Herzegovina, Latvia, Burundi and Australia.
Frequently Asked Questions
Q1. What does the apparatus show about energy in a wave? Energy travels along the connected elements while each element only oscillates about its own position, so there is no permanent transfer of matter.
 (1).png)
.png)
.jpeg)
