.Galileo Galilei used this tower experiments about gravity, when he studied at the University of Pisa, using 2 ball ball unequal weight dropping. To prove that the ball 2 you will fall to the ground at the same time.
in A.D. 1934 Benito Mussolini, trying to make the tower back perpendicular) by pouring concrete into the base, it makes the tower are more inclined to more. United States Army decided not to artillery fire on the tower of Pisa
the 27 February.1964 Italian government tried to stop the tilt of the tower of Pisa. By experts in various fields such as engineers, mathematicians and historians using steel wear than 800 tons. Support from the tower fell
on 7 January 1975.The tower of Pisa 1990 be closed to visitors to safety. It also dig ของอีกด้านหนึ่ง out to keep balance. And in the day 15 December 2001 the Leaning Tower of Pisa was open to visitors.300 years later after starting the
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.The tower of Pisa 1987 was declared a world heritage site as part of a Piazza Dei Miracoli Pierluigi collina is also 7 Wonders of the medieval world is located at the city of Pisa. Square in the Piazza del Duomo (Piazza Del Duomo).A cylindrical tower 8, white marble stone high 183.3 feet (meters) 55.86 total weight 14 500 tons, estimated to have 293 step ladder to tilt 3.97 degrees, the amount of vertical tower, away from the scene 3.9 m
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