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.
It campaigned for public, rate-supported, non-denominational education during the 1850s but ran out of steam after a 1857 bill failed to become law. The Elementary Education Act 1870 created school boards for those parts of England and Wales in that there were insufficient school places for working class children.These boards possessed power to enforce the attendance of their pupils.Ten years later this power became a duty that devolved also on the school attendance committee, a body created under an act of 1876 in the non school-board areas. The idea of compulsory education was not new.hese boards possessed power to enforce the attendance of their pupils. Ten years later this power became a duty that devolved also on the school attendance committee, a body created under an act of 1876 in the non school-board areas. The idea of compulsory education was not new.