14 Aug '11, 2am

What does the rotation of the earth and its revolution around the Sun have to do with our units of measure?

The word “acre” is derived from Old English æcer (originally meaning “open field”, cognate to west coast Norwegian language “ækre” and Swedish “åker”, German Acker, Latin ager and Greek ????? (agros). -Wikipedia An acre is 43,560 Square Feet, but why? Here is a great answer from YourHub.com: Neolithic Megalithic Measurements By about 5,000 BC, all sorts of things were being invented, not least among them a standardized unit of measurement. This unit of measurement was based on the circumference of the Earth. From experiments and observation, people understood that the earth was a sphere and that it rotated on its axis. Rather than measuring the time of rotation based on either the moon or the sun (the sun and moon rise and set at different times each day and are not constant), people measured a “day” by the time it took for a star to return to its original position in the ...

Full article: http://www.localharvest.org/blog/26102/entry/why_is_an_ac...

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