Learning on ScreenTurning a Sphere Inside out
- Synopsis
- In 1958 Stephen Smale demonstrated that it must be possible to turn a sphere inside out in three dimensions, without tearing or creasing the surface, but allowing the sphere to pass through itself. He was unable to construct an explicit process for doing so - called a homotopy - but several have now been found. The film demonstrates such a homotopy constructed by the blind topologist Bernard Morin, using chicken wire models constructed by Charles Pugh.
- Series
- Topology Film Project, Series
- Language
- English
- Country
- United States
- Medium
- Film; Video; Film. 16mm. sd. col. 23 min. Videocassette. VHS. col. 23 min.
- Technical information
- Black-and-white / Sound
- Year of production
- 1976
- Availability
- out of distribution
- Notes
- NB This film is no longer in distribution, but the topic is covered in the video OUTSIDE IN (qv)
- Uses
- Postgraduate students in algebraic topology and differential topology; possibly 3rd-year students in the same subjects.*
- Subjects
- Mathematics
- Keywords
- topology
Credits
- Producer
- Nelson R Max
Distribution Formats
- Type
- Film
- Format
- 16mm
Production Company
- Name
USA
Sponsor
- Name
USA
Distributor
- Name
Patterson (Edward) Associates
- Phone
- 01303 264195
- Fax
- 01303 264195
- Address
- Treetops
Cannongate Road
HYTHE
Kent
CT21 5PT
Record Stats
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