This is one bizarre, fascinating science phenomenon. Get yourself a long set of beads, put it in some container, drop it off, and watch the top form some floating magical science oddity…. no magic, just science. Anyhow, I bought myself a set and it works just like the video…. some might think its the beads themselves, but plain rope apparently works as well. If you do try this, a bit of a secret is the higher up you are, the higher up the arch goes.