Provides a detailed description of the Foucault Pendulum and how it works. It was originally built to demonstrate the rotation of the Earth.

The periodic motion of a pendulum is described with words and equations; little conceptual emphasis. Sample problems with solutions are provided.

Find out about Christiaan Huygens who built the world's first pendulum clock in 1656. The pendulum clock became the most accurate clock in the world for nearly 300 years.

This interactive activity from the NOVA Web site samples Galileo's experiments with falling objects, projectiles, inclined planes, and pendulums.

Provides a long list of physics formulas for easy reference.

Learn about the development of early clocks from the 14th through to the 19th centuries.

A lengthy biographical sketch from The New Advent of Jean-Bertand-Leon Foucault (1819-1868 CE) physicist and mechanician. Discusses his upbringing, scientific work, major accomplishments and published articles. Please note that "The...

Biography of Dutch mathematician Christiaan Huygens. Hyperlinks to related information.

This site from The Galileo Project of Rice University provides an outline of important facts about Chrisiaan Huygens. The topics collected include important dates, father information, nationality, education, religion, scientific...

Wikipedia offers great information on simple harmonic motion, including an image, formulas, and hyperlinked terms.

This is a glossary of terms and definitions used in Chapter 16: Oscillatory Motion and Waves from the AP Physics online text.

Explore and review harmonic motion with this illustrated guide.

Discover interesting fun facts about the life of Galileo Galilei, Italian astronomer, mathematician, and physicist.