Originally intended as a way to stabilize sensitive instruments on ships during World War II, the Slinky is quite simply a helical spring with an unusually good sales pitch. But as millions of ...

The movement of the coils of the slinky and the energy are parallel. However, none of the particles are transported along a longitudinal wave. Instead, they move backwards and forwards as the wave ...

Teachers could then ask pupils to discuss the big question: why do waves on the sea move but the sea does not move very far? Pupils could use a 'slinky spring' to reinforce the explanation of ...