Mixing water with different densities demonstration. 2:11 video.
https://www.youtube.com/watch?v=Ak9CBB1bTcc
Previously:
https://www.homemadetools.net/forum/...458#post200680
https://www.homemadetools.net/forum/...420#post127358
https://www.homemadetools.net/forum/...814#post202245
https://www.homemadetools.net/forum/...584#post193345
https://www.homemadetools.net/forum/...512#post200984
