The first scientific discovery of the Galileo happened in 1584 when he sat to listen to prayers in a church.
He noticed a lantern hanging on the ceiling of the Church of Grand space came available to WA. He thus caused suspicion that the swing of each time cycle.
The same or not, so they try to swing timer of lamp against the pulse of its own, because he used to medical classes make him know the rhythm of the pulse of the people, each time it takes. It turns out that the results of whether lamp swing.
It depends on how long it will take to complete 1 cycle and swing is the same always. When he returned home, had made the same experiment.
To make sure that the theory that he will set up a valid test results, which are the same every time. This theory has been named Galileo.
Kundu (Pendulum), page rules or rules, the clock's pendulum swing. Galileo had from this build machine timer.
Subsequently, in 1656, Christian hahayaken (Christian Huygens) brought this theory build a clock pendulum.