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Full-Text Articles in Physical Sciences and Mathematics
Physics In A Glitter Ball, Walter Trikosko
Physics In A Glitter Ball, Walter Trikosko
Faculty Publications
Maui Toys' Water Bouncer (Fig. 1) is a water‐filled ball containing glitter. Buy one and put it on your desk and students can't keep their hands off of it. Pitch the ball in the air giving it a quick spin. When you catch it you will see a sparkling vortex. Twist the ball around different ways and the angular momentum of the fluid keeps the axis of the glitter vortex fixed in one direction.
Apparatus For Demonstrating Longitudinal Wave Pulses, Walter L. Trikosko, Thomas O. Callaway
Apparatus For Demonstrating Longitudinal Wave Pulses, Walter L. Trikosko, Thomas O. Callaway
Faculty Publications
For live classroom demonstrations there are a number of devices that have been used to simulate waves. Some are based upon a design produced by E. S. Ritchie & Sons1 and consist of rods and cams that are activated by turning a crank.2,3 These devices show what transverse and longitudinal waves look like, but they do not allow for the free manipulation of wave parameters and observations of the changes that take place. A simple device can be constructed using elastic bands and straws4 to demonstrate properties of transverse waves.