The Mystery of the Golden Crown
King Henon asked the goldsmith to make him a pure gold crown. After it was finished, the king suspected that the craftsman had mixed silver into the gold crown, but the gold crown It is indeed as heavy as the pure gold that was originally given to the goldsmith. Did the craftsman do something wrong? Wanting to test the authenticity without destroying the crown, this problem not only stumped the king, but also made the ministers look at each other. Later, the king gave it to Archimedes. Archimedes tried hard to think of many ways, but they all failed. One day, he went to the bathhouse to take a bath. As he sat in the tub, he saw the water overflowing and felt his body being gently pulled up. Suddenly he had a sudden enlightenment, jumped out of the bath, and ran straight to the palace without even bothering to put on his clothes, shouting "Fureka" (Fureka, I know) all the way. It turned out that he had thought that if the crown was put in If the amount of water discharged after being immersed in water is not equal to the amount of water discharged by gold of the same weight, it must be mixed with other metals. This is the famous law of buoyancy, which states that an object immersed in a liquid is subject to an upward buoyant force equal to the weight of the liquid displaced by the object. Later, this law was named Archimedes' law.