Foucault pendulum Foucault pendulum The Foucault pendulum ( ; ) or Foucault's pendulum is a simple device named after French physicist Léon Foucault and conceived as an experiment to demonstrate the Earth's rotation. The pendulum was introduced in 1851 and was the first experiment to give simple, direct evidence of the earth's rotation. Today, Foucault pendulums are popular displays in science museums and universities. The first public exhibition of a Foucault pendulum took place in February 1851 in the Meridian of the Paris Observatory. A few weeks later, Foucault made his most famous pendulum when he suspended a 28-kg brass-coated lead bob
Which? Which? Ltd who report to the Council of Trustees. The Board of Which? Ltd is made up primarily of co-opted members, members of Which? staff and some representative[s] from the Consumers' Association Council. The Consumers' Association is subject to both the Companies Act 2006 and to charity requirements. Since 2012 it is governed by a Council of nine elected and up-to six co-opted members who can serve a maximum of 9 years at any one time. Only Ordinary members of the Consumers' Association can stand for the Council. Any subscriber can become a member of the Consumers' Association by agreeing