# Where to watch Turning a Sphere Inside Out (1979) in the UK

> Turning a Sphere Inside Out (1979) is not currently listed on any UK streaming, rental, or purchase service. Last verified on 17 May 2026 by ScreenSearch.

**Type:** Film  
**Year:** 1979  
**Runtime:** 22 minutes  
**Genres:** Documentary  
**Region:** United Kingdom (GB)  
**Last verified:** 17 May 2026 (2026-05-17T19:17:16.620Z)  

## 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.

## Streaming options in the United Kingdom

No current UK streaming, rental, or purchase listings were found for Turning a Sphere Inside Out in our daily-updated TMDB feed. The title may be on physical media only, awaiting UK release, or in a temporary licensing gap.

## Frequently asked questions

**Where can I watch Turning a Sphere Inside Out in the UK?**

Turning a Sphere Inside Out (1979) is not currently listed by any UK streaming, rental, or purchase service in our daily-updated TMDB feed. It may be on physical media, an aggregator, or pending a UK release. Check back later — availability changes frequently.

**Is Turning a Sphere Inside Out on Netflix, Disney+ or Amazon Prime Video in the UK?**

Turning a Sphere Inside Out is not currently included with any major UK subscription service. It may still be available to rent or buy.

**How accurate is this film's availability data?**

Availability is sourced from The Movie Database (TMDB), which in turn pulls from JustWatch. Listings are refreshed daily. For purchase decisions, the provider's own site is the source of truth.

## Sources

- Streaming availability: The Movie Database (TMDB), refreshed daily.
- Underlying licensing data: JustWatch.
- Canonical URL: https://www.screensearch.co.uk/watch/movie/1384129/turning-a-sphere-inside-out-1979
- Poster image: https://image.tmdb.org/t/p/w500/6MtRb1DiWKetb0vOCG2vWK09WoH.jpg
- JSON variant: https://www.screensearch.co.uk/watch/movie/1384129/turning-a-sphere-inside-out-1979.json

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