This site from The Galileo Project of the Rice University provides a great look into the pendulum experimens of Galileo. Contains first-hand writings and examples of experiments along with links to additional information.

This site from The Galileo Project of the Rice University provides a great look into the pendulum experimens of Galileo. Contains first-hand writings and examples of experiments along with links to additional information.

This site from The Galileo Project of Rice University contains a detailed description of Galileo's life and work on a timeline. Links are provided throughout for additional information on related subjects.

Students observe what happens when two pendulums have the same natural frequency in this experiment.