Well, these guys explain it way better than I could, so watch the video, even if you are familiarized with surface tension. The super slow-mo frames are absolutely wonderful !
Andrei's background is in geophysics, and he's been fascinated by it ever since he was a child. Feeling that there is a gap between scientists and the general audience, he started ZME Science -- and the results are what you see today.
Although popularized by a "paranormal consultant", the effect is real.Read more