Re: What can you do in 2d that cannot do in 3d (Escher)

[P3D Dr. George A. Themelis <fj834@xxxxxxxxxxxxxxxxxxxxx>]

Ken Luker writes:

>I may have found an example of what can be done in 2d 
>and not in 3d.  Remember the M. C. Escher graphics 
>that include an impossibly-shaped connection of three 
>rectangular-cross-sectioned bars?  

I have seen this graphic in a 3D drawing in "Stereoscopy" (the publication
of ISU, International Stereoscopic Union)

>I believe one cannot, in principle, make a convincing 3d 
>photograph of the Escher fixture.

Since these are "impossible" objects (i.e. do not exist and cannot be
constructed in real life) it is reasonable to expect that a convincing 3d
photograph cannot be made.  However I believe that a 3d drawing or a 
computer-generated image can be made and perhaps a real photograph 
can be digitally "twisted" to produce the impossible object.

George Themelis


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