意大利的比萨有一斜塔,距比萨大学不远,高54．8米,2至6层直径相同,年偏斜度1毫米。1590年斜塔的偏斜度大约为4．1米。也就是说,在第7层做自由落体实验,可以将物品投落到地面。此塔闻名于世,除了因它倾斜的外观,还有一个名字与它连在一起,那就是著名科学家伽利略,他在比萨斜塔上进行落体实验30余次。1589 Pisa, Italy has a leaning tower, not far from the University of Pisa, 54.8 meters high, 2-6 layers of the same diameter, the annual deviation of 1 mm. In 1590 the tilt of the tower is about 4.1 meters. In other words, in the seventh floor to do freefall experiment, you can drop the items to the ground. This tower is famous all over the world, except for its sloping appearance, and a name associated with it, that is, the famous scientist Galileo, who performed more than 30 falls experiments on the Leaning Tower of Pisa. 1589