3025 Set of 2 coil springs

It is usefull to perform experiments on longitudinal and transversal waves’ propagation, on the creation of stationary waves, on reflection and on other wave-related phenomena. Includes coil spring Slinky 3025A and coil spring 3025B. Dimensions 1ª spring: Ø75×150 mm 2ª spring: Ø20×1900 mm.