2013. május 16., csütörtök

It's a mystery...

I spent a few days in Italy this April, so I had the chance to visit Pisa. As I was lying on the grass next to the most famous building of the city, I was wondering about the question: 
Will the Leaning Tower of Pisa ever fall?
The Tower of Pisa (Torre di Pisa) is the freestanding bell tower of the cathedral of the Italian city of Pisa, known worldwide for its unintended tilt to one side. The tower's tilt began during construction, caused by an inadequate foundation on ground too soft on one side to properly support the structure's weight. The tilt increased in the decades before the structure was completed, and gradually increased until the structure was stabilized (and the tilt partially corrected) by efforts in the late 20th and early 21st centuries. The tower now leans at about 3.99 degrees. This means that the top of the tower is displaced horizontally 3.9 metres from where it would be if the structure were perfectly vertical.
The tower of Pisa has been leaning so long - nearly 840 years - that it's natural to assume it will defy gravity forever. According to engineers the famous structure will remain stable for at least another 200 years. By then, another intervention may be required, but the technology available to make improvements could be far more advanced and preserve the tower for another 800 years.
I'm glad to hear that, because in my opinion we have to save a beautiful building like that. It was amazing to be there. I think I'm very lucky.
To solve the mystery I used wikipedia and science.howstuffworks.com.

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