Brain's recuperative power or walking upsidedown in 3d

[P3D Gabriel Jacob <jacob@xxxxxxxxxxxxxx>]

Larry Berlin writes

>
>The device that turns the world upside down is another type of prism. I've
>seen them and even made one for myself but don't remember the specific name
>of it. Perhaps someone on the list knows the type of prism I'm referring too?
>

Oh wow, far out! Larry it doesn't seem to be critical what type of prism
you need, or I am just lucky. I picked up two cheap $5 glass equilateral
type prisms that I had lying around and put them in front of my eyes with
one face of the prism offset 45 degrees from the vertical axes. I peered 
down into them and voila I was walking upside down. The effect is quite
convincing and with two prisms it's in 3d! The effect is not bad either,
if you only have one prism and close the other eye. 
I used to try to imagine how it would feel to walk on my ceiling cause
it is pretty cramped in my house and there seems to be alot of wasted 
space up there, that can be used to walk around in. Now I can use it.
(just kidding, I am not going crazy) This thing is has a novelty aspect
marketing potential. 

Gabriel


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