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History of time - PowerPoint presentations for kids

by software engineer on Oct 21, 2011

  • 13,045 views

Primitive methods of measuring time Prehistoric man, by simple observation of the stars, changes in the seasons, day and night began to come up with very primitive methods of measuring time. This was ...

Primitive methods of measuring time Prehistoric man, by simple observation of the stars, changes in the seasons, day and night began to come up with very primitive methods of measuring time. This was necessary for planning nomadic activity, farming, sacred feasts, etc. The earliest time measurement devices before clocks and watches were the sundial, hourglass and water clock.

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History of time - PowerPoint presentations for kids History of time - PowerPoint presentations for kids Presentation Transcript