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Dry from water. Physical experiments
Entertaining experiences at home / Physics experiments for children
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Place a coin on a flat plate and pour some water over it. The coin will be underwater. Now invite a friend to take the coin with his bare hand, without wetting his fingers and without pouring water from the plate. He hardly knows how to do it.
And the trick is that the water must be sucked off. But not by mouth, of course. After all, it is not known where this coin was lying, in what hands it was.
Take a thin glass, rinse it with boiling water and tip it on a plate next to the coin. Now watch what happens. The air in the glass will begin to cool. And you've probably already heard that cold air takes up less space than hot air.
One way or another, the glass, like a medical blood-sucking jar, will begin to absorb water, and soon all of it will gather under it. Now wait for the coin to dry and take it without fear of getting your fingers wet!
Author: Galpershtein L.Ya.
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