Main content

Strangeness Minus Three

First transmitted in 1964, the prediction and recent discovery of a fleeting particle may transform our ideas about the ultimate structure of matter.

First transmitted in 1964, it took physicists at Brookhaven, Long Island, New York, two years and 97,025 photographs before they successfully identified a predicted new particle, which has a unique characteristic known as 'strangeness minus three'. Contributing physicists include Murray Gell-Mann, Yuval Neā€™eman and Richard Feynman.

Available now

45 minutes

Last on

Sun 14 Aug 1966 21:00

50 Years of Horizon Collection

50 Years of Horizon Collection
This programme is part a collection of BBC programmes specially chosen to celebrate Horizon's 50th anniversary.

Go to the BBC Four 50 Years of Horizon Collection

About BBC Four Collection programmes

Programmes are selected, in part, for their historical context and reflect the broadcast standards and attitudes of their time, which may not accord to some current BBC editorial guidelines. We aim to select programmes which can be shown in their entirety but in some cases edits are required.

50 Years of Horizon - interactive ebook

50 Years of Horizon - interactive ebook
A free, interactive ebook designed for use on Apple, Android and Kindle tablets, and featuring clips from this selection of programmes as well as interviews with current Horizon presenters, is available to download at


Role Contributor
Presenter Christopher Chataway
Reporter David Lutyens
Producer Philip Daly
Editor Eddie Montague
Participant Murray Gell-Mann
Participant Yuval Ne'eman
Participant Nicholas Samios
Participant Richard Feynman


  • Sat 25 Jul 1964 21:25
  • Sun 14 Aug 1966 21:00

Featured in...