Archimedes principle: It is an important principle of hydrostatics. It 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, and the direction is vertical upward and 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.
● Slings and cranes
Archimedes used the lever principle to make a stone slingshot, which can throw large stones at the warships of the Roman army or fire spears and stones at the Roman soldiers with a transmitter. No enemy near the city wall can escape his flying stone or javelin. According to some later records, ................................................................................................................. built a huge crane at that time, which could lift the enemy warships into the air and then fell heavily on the water and smashed them.
● Mirror spotlight
One day, the ancient city of Sila was attacked by the Roman army. Young adults and soldiers of the ancient city of Sila went to the front, leaving only the old people, women and children in the city, which was in a very critical moment. At this moment, Archimedes stood up for his motherland.
Archimedes asked the women and children to take out their mirrors and come to the coast together, so that the mirror could reflect the strong sunlight to the main sail of the enemy ship. The reflections of thousands of mirrors gathered at one point of the sail, and the sail suddenly burst into flames. The fire burned with the wind, and the Romans didn't know the details, thinking that Archimedes had invented a new weapon. I ran away in a panic.
These weapons made the Roman army panic and everyone was afraid. Even General Maceiras admitted with a wry smile: "This is a war between the Roman fleet and Archimedes" and "Archimedes is a mythical giant with hundreds of hands".
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