Galileo and his swinging pendulum
Pendulum - Wikipedia
Galileo and the pendulum clock
The pendulum is assembled from a string or a light rod with a weight at one end. Galileo was the first to examine its unique characteristics. Galileo found that.
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Description:Like Archimedes he was always thinking and always asking the reasons for things. He invented the thermometer and simple forms of the telescope and the microscope. He made many important discoveries in science. The lamps—which burned only oil in those days—were hung by long rods from the ceiling. When the lamplighter knocked against them, or the wind blew through the cathedral, they would swing back and forth like pendulums.