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 Witch of 142 times in concert version in the following countries: Norway, Canada, USA, the Netherlands, England, Spain, Finland, Sweden and Denmark. The total attendance figure is approx. 276,000. Total record sales are in excess of 110,000 units. Licensed productions have been staged in several European countries. Which Witch Which Witch is a musical written by Norwegian singers/composers Benedicte Adrian and Ingrid Bjørnov. The storyline for "Which Witch" was derived from the witch finder's manual "Malleus Maleficarum", and the original script was written by Adrian and Bjørnov's manager Ole A. Sørli. The lyrics of the early concert versions were written by