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Old May 24th 2008, 03:28 AM   #1
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Perceived Depth

I am looking down from my raft at a shark. Since I do not know anything about optics, I think the shark is somewhere along the line BD. Where do I 'think' it is along the line though and why?

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Old May 24th 2008, 08:50 AM   #2
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Originally Posted by DivideBy0 View Post
I am looking down from my raft at a shark. Since I do not know anything about optics, I think the shark is somewhere along the line BD. Where do I 'think' it is along the line though and why?

Thanks
Your depth perception will place the shark the same distance along AD as it is along the bent path AB to the actual location. Basically if we put the center of a circle at B with a radius equal to the distance from B to the actual shark, BD will also be a radius of that circle.

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