I wonder if anyone could provide any additional info about how http://www.grand-illusions.com/pseudoscope.htm works. I've searched for mentions of it on the forum and come up with nothing. Martin Gardner apparently liked it.
Any ideas about how this works, not mechanically, but what the illusion is like etc.

Andrei

Well, read the description again. It just alters the way you see things: back becomes front etc. Its just an optical illusion for personal amusement-though you could use it in magic as well as some sort of "magical binoculars" and possibly cards or something. At 499 sterling its a bit pricey...

In a narrow-minded sort of way, I have a mildly difficult time imagining front becoming back. I can see why it'd happen, I just have a very hard time picturing it in my head. Also, I'm not familiar with how this ACTUALLY is accomplished, but I think producing a slightly larger version of the illusion MIGHT provide larger-scale amusement, that is to say, if the people looking through the binoculars weren't realizing they were looking through binoculars, which might be impossible.

Andrei

That looks like lot of fumn to play with. I'd love to have one in the magic room of my house to show my guests.