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.
The 1944 Education Act guaranteed free education for every child in England and Wales. It also divided schools into primaries and secondaries and aimed to raise the school leaving age to 15 and, as soon as practicable, to 16.n the mid 20th Century, girls and boys were educated separately in secondary school and there was very little education for those with special needs. This, when changed, caused controversy, because people believed girls were not as clever as boys, and should do different subjects.