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Tesseract-The Fourth demensional cube; the tesseract is a cube suspended in another cube with all the vertices or corners connected.  The tesseract was used in Madelaine L'Engel's A Wrinkle In Time as "a wrinkle in time" the internal cube flows outward as the external one flows inward square by square.

'''Tesseract'''-The Fourth demensional cube; the tesseract is a [[cube]] suspended in another cube with all the vertices or corners connected.  The tesseract was used in [[Madelaine L'Engel]]'s [[A Wrinkle In Time]] as "a wrinkle in time" the internal cube flows outward as the external one flows inward square by square.

==External Links==

==External Links==

[http://www.maa.org/editorial/knot/tesseract.html A detailed mathematical explanation, complete with Java graphical demonstrations.]

[http://www.maa.org/editorial/knot/tesseract.html A detailed mathematical explanation, complete with Java graphical demonstrations.]