Italian scientist Galileo discovered the pendulum principle.

Galileo's law of pendulum, the period of pendulum and the length of pendulum.

1, Galileo's pendulum law: Galileo's pendulum law was put forward by Italian scientist Galileo, which describes the relationship between period and pendulum length.

2. Period and length of pendulum: According to Galileo's pendulum law, the period of pendulum is directly proportional to the square root of pendulum length. The period of pendulum will increase with the increase of pendulum length and decrease with the decrease of pendulum length.