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Smart Spoon is designed to prevent user from scald by hot liquid. It works according to the theory of thermal expansion and contraction: The Smart Spoon is hollow with its inner face is made by flexible material. When the liquid is too hot, the air inside the spoon will inflate and that leading the inner face to plump up. So the hot liquid couldnt be get until it become cooler, with the inner face getting back. Then the spoon could be used as usual. With Smart Spoon, people, especially baby, wont get scald by hot liquid.
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