Superb For Illustrating Both Transverse and Longitudinal Waves
Fifteen centimeters long when collapsed, it easily extends to 10 m when stretched
The “Slinky” is an edge-wound coil spring about 3" in dia. It can be used horizontally either on a smooth surface like the floor or suspended approximately every foot by cord.
Caution: WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.
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