Below are some useful links about Clocks and Watches on Time:
| Biological Clocks Virtual Museum - This exhibit explores the inputs, outputs, and mechanisms of biological clocks with a primary focus on circadian rhythms. |
| Cesium Atomic Clocks - Kinds of cesium clocks, with pictures, plus a description of their operation and the science behind them. |
| Doug's Atomic Clocks - Details on Doug Hogarth's experiments with his atomic clock. |
| How Stuff Works: Atomic Clock - Concise history, background, definitions and operational information regarding atomic clocks. |
| How Stuff Works: Pendulum Clock - Concise description using drawings and animation to show the operation of a pendulum clock. |
| Smithsonian Institute - On Time - History of the clock and how Americans have measured time and been affected by it. |
| Watch Source Guide - Comprehensive source of information about watches. Includes sections on watch functioning, maintenance, articles and more. |
Cadence Web Directory is the leading web directory for Australian and International listings for businesses and highly recommended, top quality websites. The content of this page about Time Clocks and Watches is based on the ODP.