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Cleverwares :: History of Time keeping :: When and Why Humans Began to Keep Time |
 | | The second is a means of keeping track of, and displaying the result of the time measured, like the hands on the face of a watch, or the shadow on a sundial. |
| | These were a step forward in technology, but they had the problem of the main spring slowly unwinding, causing the watch to keep time at a slower-than-accurate rate. |
| | From stone calendars to the atomic age of timekeeping, this illustrated history of time spans the progress of mankind through the ages and its relationship to timekeeping and recording of history. |
| www.cleverwares.com /timehistory.html (1901 words) |
