Water in an overturned glass. Fun physical experience at home

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Water in an overturned glass. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Fill the glass with water up to the rim. Cover the glass with a sheet of thick paper and, holding the paper with your palm, quickly turn the glass upside down. Now remove your hand. The water will not spill out of the glass.

Water in an overturned glass

The pressure of atmospheric air on a piece of paper is greater than the pressure of water on it. That's why the paper doesn't fall off.

But just in case, do all this over the basin, because with a slight distortion of the paper and with insufficient experience at first, water can be spilled.

Author: Rabiza F.V.

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Absolutely smooth surfaces 26.01.2001

Professor of the State University of North Carolina (USA) Jan Genzer and colleagues have developed a technology for manufacturing absolutely smooth surfaces.

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