The Slinky is an amazing little toy experienced by just about every child as they grew up in the last 50 odd years or more.
It turns out it’s not just a great toy but a whole raft of Physics experiments all bundled up in one coil of metal.
The below videos demonstrate a phenomenon of tension information being transmitted from on end to another in a delay. This means that you have the bottom of the slinky literally suspended in mid air and only dropping once the tension cannot defeat gravity.
Enough of my ramblings, the videos speak for themselves:
What is your prediciton?