The Floating Water Bridge, a demonstration by Dr. Elmar C. Fuchs. Two beakers are filled with triply deionized water. Electrodes are added to each, exposing the water to high d.c. voltage. A cylindrical water bridge forms between them that is stable enough to sustain itself across a few centimeters. Watch the water as the beakers are slowly separated. From FYeah Fluid Dynamics:
File under: electrohydrodynamics and do not try this at home. High voltage is dangerous and requires trained adult supervision. Check out more images at Dr. Fuchs’ site. Bonus vid: density fluctuations.
In the archives: more physics videos and more demonstrations like this: an aluminum foil boat floats on a sulphur hexafluoride sea.