Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of, and in opposition to, external forces like gravity. In this walking water experiment, liquid uses the ...

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When you water plants, you water their roots. But how does the water travel all the way from the roots of the plant to the leaves? They are standing upright: wouldn’t that defy gravity? In fact, there ...

On Earth, fluid management systems rely on gravity. In your car, for instance, a pipe runs from the bottom of the fuel tank to the engine. Gravity positions the fuel at the bottom of the tank, and the ...

This is a view of the Capillary Flow Experiment 2 (CFE-2) Interior Corner Flow 3 (ICF-3) vessels set up during an experiment run aboard the International Space Station. This study looks at capillary ...

With fracking, scientists have calculated the expected level of capillary rise with the Lucas-Washburn equation, a mathematical model whose earliest parameters were first devised nearly a century ago.