Collector Resources@ Promotional Clocks and Watches@ Shopping, Antique Clocks and Watches@ Shopping, New Clocks@ Shopping, New Watches@

» Cesium Atomic Clocks    Kinds of cesium clocks, with pictures, plus a description of their operation and the science behind them.    http://tycho.usno.navy.mil/cesium.html

» Doug's Atomic Clocks    Details on Doug Hogarth's experiments with his atomic clock.    http://www.niceties.com/atomic.html

» How Stuff Works: Atomic Clock    Concise history, background, definitions and operational information regarding atomic clocks.    http://www.howstuffworks.com/atomic-clock.htm

» 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

» Smithsonian Institute - On Time    History of the clock and how Americans have measured time and been affected by it.    http://americanhistory.si.edu/ontime/