| Directory > Reference > Time > Clocks and Watches How Stuff Works: Atomic Clock Concise history, background, definitions and operational information regarding atomic clocks. http://www.howstuffworks.com/atomic-clock.htm Reviews Rating: Not yet Rated
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How Stuff Works: Pendulum Clock Concise description using drawings and animation to show the operation of a pendulum clock. http://www.howstuffworks.com/clock.htm Reviews Rating: Not yet Rated
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Doug's Atomic Clocks Details on Doug Hogarth's experiments with his atomic clock. http://www.niceties.com/atomic.html Reviews Rating: Not yet Rated
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Smithsonian Institute - The Quartz Watch History of the wristwatch, and a description of current technology. http://www.si.edu/lemelson/Quartz/answer/answer.html Reviews Rating: Not yet Rated
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