3B10.20 - Table Slinky
Demonstrate transverse and longitudinal waves with a common toy.
The table Slinky is ideal for showing longitudinal waves and for showing the reflection of either a longitudinal or transverse wave.
To show a transverse pulse, give a sharp sideways pulse of the slinky and return to the starting position. The students should be able to observe the pulse travel down the length of the spring and be reflected back after it reaches the mounted point.
To show a longitudinal pulse, either pulse the spring back and forth in the plane of the slinky, or gather at least 3 feet of the spring and let it go to watch the longitudinal pulse travel down the spring and back.
**There is a great deal of friction between the slinky and the tabletop**
**possible improvement, place several feet of glass plates underneath the slinky to reduce the amount of friction produced or suspend the slinky from a number of strings so it is free-floating.**