P3D R: P3D 4D space

["Sergio Baldissara" <winter@xxxxxxxxxx>]

> Date: Tue, 7 Mar 2000 17:25:00 -0800
> From: Nick Merz <merz@xxxxxxxxx>
> Nick Merz writes:
> << I would be particularly interested in 4D objects projected
>   into 3 space.  For example, I know it's possible to tie a plane into
>   a knot in 4D space without having it pierce itself, but I've never
>   seen it in 3D. >>
>
> Jim Norman asks:
> <<Call me an old fuddy duddy, but what on earth (or any place else, for
that
> matter) is "4D space"?  And how do you "tie a plane into a knot"???? >>
>
> Response:
> I think 4D space is easy to conceptualize and really hard to
> visualize (I find it impossible).  The idea with 3D space is that we

Indeed we live in a n-dimensional space... you've got X,Y,Z axes (space) + t
(time) + T° (temprature) ... one could add light &  sound wavelenghts
(colours & pitches) + light & sound intensities... to make it short, a 3d
movie is a n-dimensional show. I don't know about Virtual Reality , but in
there the expression "4-dimensional show" has a meaning of it's own.
Just a matter of terms!
Sergio