EFFECT: Challenge your friends to balance a needle on the surface of a glass of water without it sinking. Of course they will fail and you show them how it's done.
MATERIALS: You will need a needle, a tissue paper, and a glass of water.
METHOD: Start by taking the tissue paper and putting it gently on the water. Let it float. Place the needle on top of the tissue paper lightly so it does not sink. A few minutes later, the tissue paper will sink into the water, and amazingly the needle will be left floating on the water.
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