Earth Shape and Constellations
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How do we know the earth is spherical?
Where is the ecliptic and what constellations are along there?
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Solution Summary
The 3 pages solution provides several ways to show the world is indeed spherical.
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Check out:
http://www.physlink.com/Education/AskExperts/ae535.cfm
http://en.wikipedia.org/wiki/Ecliptic
And just for laughs:
http://www.flat-earth.org/
http://www.alaska.net/~clund/e_djublonskopf/Flatearthsociety.htm
Proof 1: Line of sight
When a distant object with certain height approaches, we first see the highest point of the object first, and then slowly the rest of the object is revealed as the rest of it clears the earth's curvature.
Proof 2: Lunar eclipse.
When ...
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