How Clocks Work

Clocks are one of the very first complex machines created by humans. Initially they all had pendulums and gears, but now they come in many different forms, from quartz watches to atomic clocks! Here are the HowStuffWorks articles that explain how they all work:

• How Pendulum Clocks Work
• How Quartz Watches Work
• How Digital Clocks Work
• How Atomic Clocks Work
• Inside a wind-up alarm clock
• How do radio-controlled clocks that set themselves to the atomic clock in Colorado work?
• How Time Works

For a complete list of HSW articles, see The HowStuffWorks Table of Contents.