Turning a sphere inside out (TEFC)

United States, 1976

Film
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Episode of Series “Geometry”
Uses advanced computer animation to discuss the problem of turning a sphere inside out by passing the surface through itself without making any holes or creases. Illustrates the homotopy with a sequence of models, showing the crucial stages in the motion.

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Collection

In ACMI's collection

Credits

director

William Hansard

producer

David Nelson

production company

Educational Development Center

Duration

00:22:48:00

Production places
United States
Production dates
1976

Appears in

Geometry

Group of items

Geometry

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Collection metadata

ACMI Identifier

012452

Language

English

Subject categories

Animation

Animation → Computer animation

Education, Instruction, Teaching & Schools → Geometry - Study and teaching

Educational & Instructional

Educational & Instructional → Educational films

Educational & Instructional → Instructional

Mathematics, Science & Technology → Mathematical models

Mathematics, Science & Technology → Motion

Short films

Short films → Short films - United States

Sound/audio

Sound

Colour

Colour

Holdings

16mm film; Access Print (Section 1)

Please note: this archive is an ongoing body of work. Sometimes the credit information (director, year etc) isn’t available so these fields may be left blank; we are progressively filling these in with further research.

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If you would like to cite this item, please use the following template: {{cite web |url=https://acmi.net.au/works/75158--turning-a-sphere-inside-out-tefc/ |title=Turning a sphere inside out (TEFC) |author=Australian Centre for the Moving Image |access-date=3 July 2025 |publisher=Australian Centre for the Moving Image}}