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Clocks

Springs

• Springs
• Energy in a spring system
• Energy graphs

Simple harmonic motion

• Motion graphs
• Simple harmonic motion

The pendulum

• Pendulum question
• SHM for a simple pendulum
• A physical pendulum
• A pendulum at large amplitudes

External Links

• Pendulum Clocks, at Wikipedia
• John "Longitude" Harrison, at Wikipedia
• Atomic Clock, at Wikipedia
• Pendulum Clocks at How Stuff Works
• Atomic Clocks at How Stuff Works
• Digital Clocks at How Stuff Works
• Quartz Watches at How Stuff Works
• History of Clocks and Calendars