Paper clip floating on water

Paper clip floating on water

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Credit: ADAM HART-DAVIS/SCIENCE PHOTO LIBRARY

Caption: Surface tension. Paper clip floating on the surface of water as a demonstration of surface tension, a property of liquids caused by molecular forces near the surface. The forces cause the surface to behave like a stretched elastic membrane due to the attraction (cohesion) between water molecules.

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Keywords: cohesion, effects, float, floating, glass, liquid, meniscus, metal, molecular forces, paper clip, physical effect, physics, support, supported, supporting, surface tension, water

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