A nice illusion

[Dragonfly]

This is a great illusion. Even when I know how it works, I can't escape the illusion when seen from the right viewpoint. No matter how I try to impose my knowledge on the image, I still see balls running uphill against the gravitational force, a good illustration how a perception can be involuntary and wrong. In that way it's similar to the perception of moon craters as convex domes that I've mentioned in earlier posts.

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[BaalChatzaf]

This is a great illusion. Even when I know how it works, I can't escape the illusion when seen from the right viewpoint. No matter how I try to impose my knowledge on the image, I still see balls running uphill against the gravitational force, a good illustration how a perception can be involuntary and wrong. In that way it's similar to the perception of moon craters as convex domes that I've mentioned in earlier posts.

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Nice illusion. It is like the Ames Room. Even after you know how it works, you cannot help but see the illusion as an illusion. Knowing does not make it go away.

Ba'al Chatzaf

[syrakusos]

In that way it's similar to the perception of moon craters as convex domes that I've mentioned in earlier posts.

You mean, the domes are illusions?

Damn. I was hoping, you know...

[tjohnson]

Hey we have a tourist attraction in New Brunswick called Magnetic Hill.

http://en.wikipedia.org/wiki/Magnetic_Hill_%28Canada%29

[BaalChatzaf]

I will bet one can get a hole in -1 at the golf course near the Hill.

Ba'al Chatzaf

[merjet]

I will bet one can get a hole in -1 at the golf course near the Hill.

Ba'al Chatzaf

I might take that bet. But first I need to know what a "hole in -1" is.