In Our Time

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In Our Time: Heisenberg's Uncertainty Principle

Heisenberg's Uncertainty Principle

BBC Radio 4 - In Our Time, Heisenberg's Uncertainty Principle

Melvyn Bragg and guests discuss Heisenberg's key role at the outset of quantum mechanics

Melvyn Bragg and guests discuss Werner Heisenberg's breakthrough, aged 23, that led to Nobel Prize judges celebrating him as the creator of quantum mechanics.

Melvyn Bragg and guests discuss the German physicist who, at the age of 23 and while still a student, effectively created quantum mechanics for which he later won the Nobel Prize.  Werner Heisenberg made this breakthrough in a paper in 1925 when, rather than starting with an idea of where atomic particles were at any one time, he worked backwards from what he observed of atoms and their particles and the light they emitted, doing away with the idea of their continuous orbit of the nucleus and replacing this with equations. This was momentous and from this flowed what’s known as his Uncertainty Principle, the idea that, for example, you can accurately measure the position of an atomic particle or its momentum, but not both.

With 

Fay Dowker
Professor of Theoretical Physics at Imperial College London

Harry Cliff
Research Fellow in Particle Physics at the University of Cambridge

And 

Frank Close
Professor Emeritus of Theoretical Physics and Fellow Emeritus at Exeter College at the University of Oxford

Producer: Simon Tillotson

Reading list:

Philip Ball, Beyond Weird: Why Everything You Thought You Knew about Quantum Physics Is Different (Vintage, 2018)

John Bell, ‘Against 'measurement'’ (Physics World, Vol 3, No 8, 1990)

Mara Beller, Quantum Dialogue: The Making of a Revolution (University of Chicago Press, 2001)

David C. Cassidy, Beyond Uncertainty: Heisenberg, Quantum Physics, And The Bomb (Bellevue Literary Press, 2010) 

Werner Heisenberg, Physics and Philosophy (first published 1958; Penguin Classics, 2000)

Carlo Rovelli, Helgoland: The Strange and Beautiful Story of Quantum Physics (Penguin, 2022)

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