Re: Dear Tourists...
http://en.wikipedia.org/wiki/Gravity_hill
Quote:
The slope of gravity hills is an optical illusion, although sites are often accompanied by claims that magnetic or even supernatural forces are at work.
The most important factor contributing to the illusion is a completely or mostly obstructed horizon; without a horizon, judging the slope of a surface is difficult as a reliable reference is missing. Objects one would normally assume to be more-or-less perpendicular to the ground (such as trees) may actually be leaning, offsetting the visual reference.
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Last edited by metalangel; 13-05-11 at 02:10 PM.
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