The WDSET1 Wave Demonstrator Set includes two helical springs and a length of cotton string.
The long narrow spring measures 3/4" x 72" and can be extended to 5 meters. The larger spring measures 3" x 4" and can be extended many times its length without distortion. Includes an actvity guide.
|WDSET1||Wave Demonstrator Set (both springs and cotton string)|
|WDS006||Spiral Spring, 3/4" x 72"|
|FCS003||Flat Coiled Spring, 3" x 4"|
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