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Re: [blondgecko] two parallel lines can cross!!!:
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rrrADAM
Jan 17, 2007, 5:32 AM
Views: 1946
Registered: Dec 19, 1999
Posts: 17553
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They will ALWAYS cross... Draw them on the earth (a sphere) and they will cross, just as the longitudinal lines cross at the poles. Since space IS curved, they will cross in space also.
The Euclidean Geometry we all learned in school is only acurate in a flat space, or on a flat surface, but this is NOT physical reality...
Example:
In Euclidean Geometry, we all learned that the angles of a triangle always equal 180 degrees when added together, but if you draw a triangle on the earth in a large scale (1,000s of miles), and measure the angles, they will NOT equal 180 degrees, but considerable more... In fact, if you do it on a large enough scale, you can do it with 3 90 degree angles. This is because the earth is not flat. In fact, the lines will be curved.
Avoiding this curvature is impossible, since matter curves spacetime.
(This post was edited by rrradam on Jan 17, 2007, 5:37 AM)
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Edit Log:
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Post edited by rrrADAM
() on Jan 17, 2007, 5:35 AM
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Post edited by rrrADAM
() on Jan 17, 2007, 5:37 AM
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