LINDNER FAMILY PHYSICS BUILDING
As you enter Lindner Hall, the first thing you will notice is the Foucault Pendulum (Lobby area). The earth rotates under the pendulum but it appears that the pendulum rotates. An electromagnet at the top of the support wire keeps the pendulum moving against friction of the air.
The vertical plane in which the pendulum swings appears to rotate clockwise at a rate of 9.47 degrees per hour in Cincinnati. Actually, it is the floor and building which are rotating counterclockwise at that rate! The rotation of the Earth was first demonstrated in this way by Foucault at Paris in 1851.
Please enjoy the tour of our building.