Turning a Sphere Inside Out
(1979) Unfolding the impossible: turning a sphere inside out, without a single crease. | Released
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Movie Details
Tag Line: Unfolding the impossible: turning a sphere inside out, without a single crease.
Status: Released
Average Rating: 0
Release Date: Jan 1, 1979
Rating: 1979-01-01
Run Time: 12h 22m
Original Language: English
Website: -
Production Countries: United States of America
Production Companies: The Topology Films Project , Case Western Reserve University , Education Development Center (E/D/C) , International Film Bureau
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Synopsis
This video is about the problem of turning a sphere inside out, by passing the surface through itself, without making any holes or creases. Mathematicians believed the problem to be unsolvable until 1958, when Stephen Smale proved otherwise. The motion of turning a sphere inside out, called a regular homotopy, is extremely difficult to visualize. The homotopy in this film was developed by Bernard Morin, a blind mathematician. The motion is illustrated with a sequence of chicken-wire models, built by Charles Pugh, showing the crucial stages in the motion. Commentary is provided by mathematicians Nelson L. Max, Stephen Smale, and Charles Pugh, and by physicist Judith Bregmann.
Main Cast
Crew
| Department | Role | Name |
|---|---|---|
| Directing | Director |
Nelson Max
|
| Visual Effects | Modeling |
Charles Pugh
|
| Animation |
Nelson Max
William Clifford, Jr
|
|
| Art | Graphic Designer |
James Blinn
|
| Department | Role | Name |