Word: pendulums
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...idea of the city. Pisa is situated on the Arno nearer the sea. The city is noted for a group of buildings surrounding the Duomo, or cathedral, which dates from the eleventh century. In this church is the identical lamp from whose movements Galileo deduced the laws of the pendulum. The baptistry is a very handsome building, but the chief interest centers in the well known "Leaning Tower," from whose summit Galileo made his experiments on falling bodies. The attitude of this tower is probably due to the insufficient foundations laid by the builders, which caused it to settle while...