Second Pendulum

Second pendulum is a simple type of pendulum. That takes two seconds to complete both site swings. That is, one second to swing in one direction is correspondingly one second for another site. Complete swing in two seconds.
The importance and characteristics of the second pendulum are many. It is used to control mechanical clocks. A second pendulum has a length of about 99.353 cm at sea level at 45 degrees latitude.