Wave Motion Apparatus
Powell's Wave Machine
Model: SW4250-001
Description
The IEC 'Wave Motion Machine' is a high-quality instrument designed to demonstrate the fundamentals of transverse and longitudinal wave motion. A scale placed behind the handle divides the rotary motion into degrees of rotational angle so that the relationship or 'phase' between the rotary and the vertical motions may be studied.
| Diameter | 178mm |
|---|---|
| Height | 51mm |
| Weight | 170g |
Image Description: A detailed photograph shows the IEC Wave Motion Apparatus, a complex mechanical device with a central rotating shaft driven by a hand crank. Mounted above the shaft are multiple vertical rods, each connected to a cam mechanism below. These rods are designed to move up and down. At one end of the apparatus, a set of 8 rods are visible protruding horizontally through a guide loop. A circular scale with degree markings is positioned near the hand crank, indicating rotational angles. The overall construction appears robust and designed for educational demonstration.
Demonstrate Transverse Wave Motion
The handle, located at one end of the machine, is rotated to cause a series of cams to rotate. These cams, in turn, cause a set of 16 vertical rods to rise and fall sequentially as the cams rotate beneath them. The motion of these rods follows a Sine Wave pattern, as their vertical movement is directly driven by the circular rotary motion of each cam.
The resulting transverse motion, clearly observable by watching the tips of the rods, serves as a demonstration of the creation of Sine Waves, similar to those produced in a ripple tank or by a vibrating guitar string.
Demonstrate Longitudinal Wave Motion
At one end of the machine, a set of 8 rods protrude horizontally through a guide loop. These rods move longitudinally relative to one another, demonstrating longitudinal wave motion, also known as Sine Wave motion.
This longitudinal motion illustrates the compression and extension of spring coils during longitudinal vibration, or the radiation of radio energy from an antenna into the atmosphere.
Important Note
To clearly demonstrate the principles of wave motion, it is crucial that all rods move freely up and down within their guides. The apparatus has been meticulously designed to ensure reliable, quiet, and free motion. However, during transport, the metal guide loop may be dislodged from its position, potentially causing the rods to jam. This issue can be easily resolved by manually repositioning and adjusting the loop. Ensure the metal guide loop is not bent and remains vertical, allowing the guided rods to move smoothly.
