Natural Science Forum / Physics / General Physics / July 2008

Color Plate 3 at:
http://www.rwgrayprojects.com/synergetics/plates/figs/plate03z.html

shows that physical models can not just inspire but can also be used to
derive and prove things by construction.

I haven't read any other books that use physical models that you could
hold in your hands to derive or prove things.

I think the coordinate system to use for color plate 3 is at:

http://mysite.verizon.net/cjnelson9/index.htm

and

SynergeticsApplication7.nb (2 MB) - Mathematica Notebook at:
http://library.wolfram.com/infocenter/MathSource/600/

Are there any examples of proofs with 3D contraptions or physical models
or are all mathematical proofs of theorems paper and pencil proofs?

Cliff Nelson

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