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一次,物理学家朗之万给科学家的孩子们上课,提出了这样一个问题:根据阿基米德原理,物体浸入水中必将排除相同体积的水,为什么金鱼放到水中却不会排出水呢?孩子们个个绞尽脑汁想找到问题的答案,居里夫人的女儿琦瑞娜独辟蹊径地找来一条鱼,放进水里,结论出来了:金鱼在水里也是要排水的。
Once, the physicist, Lang Zhiwan, taught the children of the school a question: According to Archimedes’ principle, when an object is immersed in water, it will remove the same volume of water. Why does the goldfish go into water but does not discharge water? The children racked their brains to find the answer to the question. The daughter of Curie, Qi Lina, found a fish in a fresh way and put it into the water. The conclusion came out: Goldfish are also drained in the water.