Those are always fun! :-)
Again seen at Phaenomenta Flensburg.
Related Posts to "Newton's balls":
- "Coriolis fountain" February 14, 2017
- Thought experiments January 23, 2015
- Centrifugal governor February 4, 2015
- Ball balancing on air flow June 15, 2015
- Balls balancing on water jets October 20, 2014