An important principle of hydrostatics points out that an object immersed in a static fluid is subjected to a buoyancy force, the magnitude of which is equal to the weight of the fluid displaced by the object, the direction is vertical and upward, and it passes through the center of mass of the displaced fluid. This conclusion was first put forward by Archimedes, so it is called Archimedes principle. This conclusion is also true for objects partially submerged in liquid. The same conclusion can also be extended to gases.

Extended data:

Decoding Archimedes Parchment: Combinatorial Mathematics.

Recently, with the help of modern science and technology, scientists deciphered a paper by Archimedes, an ancient Greek mathematician. The conclusion is that this paper named "Stomach Ion" has solved the problem of combinatorial mathematics. The original text is invisible, and the manuscript was written on parchment with a history of nearly 1000 years, which was destroyed by the cover writing of ancient monks and the poor preservation methods of collectors. This discovery is like Archimedes stepping into the bathtub and shouting "Eureka" (found it! ) makes scientists excited. ?

It is necessary to calculate all the possibilities carefully and systematically to get the answer 17 152, "This is very difficult". Several Stanford mathematicians said. Dr. William H. Cutler, a computer scientist from Chicago, wrote a new computer program, which proved the answer is correct.

Baidu encyclopedia-Archimedes principle

People's Network-Decoding Archimedes Parchment: Combinatorial Mathematics