Watch: Floating Water Bridge Defies Gravity

For those of you who can’t quite picture what a floating water bridge looks like, check out this video. The bridge, which can last for hours, was created by filling two beakers with deionized water, applying an electric voltage, and slowly separating them. Scientists believe that a combination of dielectric tension, where the voltage makes the water molecules line up tightly, and surface tension helps keep the bridge aloft. To read more about the physics behind this impressive feat, see “Why a Water Bridge Doesn't Collapse.”

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