When the tissues are spread out in a glass. The paper does not wet at all it is because the water in the basin into glass because the glass is full of air. Be able to prove in a glass with air. Using an empty glass, another non-paper thit Shu. Gradually fell into the glass until the entire glass of water and then try tilting the glass. They found that the surface of the water area, there will be bubbles gushing. After that the air coming out from the glass. Water in the tub will go instead. If you do an experiment and found that the wet paper, try again. This time, try not to tilt the glass of water. But if you press straight down the glass. The experiment requires a certain success.
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