The time for one complete cycle, a left swing and a right swing, is called the period. The period depends on the length of the pendulum, and also to a slight degree on the amplitude, the width of the pendulum's swing.he period of swing of a simple gravity pendulum depends on its length, the local strength of gravity, and to a small extent on the maximum angle that the pendulum swings away from vertical, Î¸0, called the amplitude.
Compulsory elementary schooling was formally introduced in Sweden in 1842. A process of reform, destined to take many years, began in the 1940's with the aim of expanding compulsory schooling.
Under the Elementary Education Act 1880, education became compulsory from the ages of 5 to 10. The Free Education Act 1891 provided for the state payment of school fees up to ten shillings per week. The Elementary Education (School Attendance) Act 1893 raised the school leaving age to 11 and later to 13.