David Pescovitz blogged about this phenomenon previously, but until now I'd never seen a water bridge caught on video.
When exposed to a high-voltage electric field, water in two beakers climbs out of the beakers and crosses empty space to meet, forming the water bridge. The liquid bridge, hovering in space, appears to the human eye to defy gravity...
Initially, the bridge forms due to electrostatic charges on the surface of the water. The electric field then concentrates inside the water, arranging the water molecules to form a highly ordered microstructure. This microstructure remains stable, keeping the bridge intact.
After the jump, check out more video of this crazy weird awesome phenom.Spiral flow visualization
Two thermographic visualizations