Strangeness Minus Three

Duration: 45 minutes

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 Ne’eman and Richard Feynman.

  • 50 Years of Horizon Collection

    BBC Four 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 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


Christopher Chataway
David Lutyens
Philip Daly
Eddie Montague
Murray Gell-Mann
Yuval Ne'eman
Nicholas Samios
Richard Feynman


Featured in...

  • 50 Years of Horizon

    A collection of programmes specially chosen to celebrate Horizon's 50th anniversary.

Horizon interactive ebook


Celebrate 50 years of Horizon with this free downloadable ebook for tablets.

Horizon archive collection

Horizon archive collection

Entire episodes chosen to celebrate the show's 50th anniversary, starting from 1964.

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