What is the Leaning Tower of Pisa in Italy for?

The leaning tower of Pisa was originally built as an independent bell tower of Pisa Cathedral in Italy. Now it has become a local landmark building and a famous tourist attraction in Italy because of its inclination.

The leaning tower of Pisa (Italian: Torre pendente di Pisa or Torre di Pisa, English: lean Tower of Pisa) was built in August 1 173, which is the independent bell tower of Pisa Cathedral in Italy, located in the Miracle Square in the north of Pisa, Tuscany, Italy.

A group of religious buildings are scattered on the lawn of Miracle Square. They are cathedral (built in1063-13rd century), baptist church (built in1153-14th century), bell tower (leaning tower of Pisa) and cemetery (built in 65438).

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Related legends

Legend has it that in 1590, Galileo, an Italian physicist born in Pisa, made a free-fall experiment on the leaning tower of Pisa, dropping two spheres with different weights from the same height at the same time, and as a result, two shot puts landed almost at the same time, thus discovering the law of free-fall, overthrowing Aristotle's previous view that heavy objects would land first, and the falling speed was directly proportional to their mass.

However, Galileo's two spheres did not fall together like the legend. Even if the acceleration of gravity is constant, the two spheres will not fall together because of air resistance. This is why goose feather and shot put will not land together.

Because of air resistance, two spheres cannot be regarded as free falling bodies. But Galileo's experimental theory is correct. No matter how many objects are in a vacuum, they all follow the law of free fall.

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