Clock and Watch
In the early days of humanity, only three divisions of time existed: days (the interval between successive sunrises), months (the interval between complete lunar orbits), and years (th...
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The First Clocks
Overview
Water clocks and sundials were the first artificial measures of time. They allowed people to see time in an abstract way, apart from nature, and also helped create an objecti...
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Clock and Watch
The First Clocks