In Our Time

BBC Radio 4

Society & Culture, History

Chart Positions

History 12
Society & Culture 68

Melvyn Bragg and guests discuss the history of ideas


IOT: The Photon 12 Feb 15

February 12th, 2015

Episode 433 of 552 episodes

The photon is one of the most enigmatic objects in the Universe. In the late nineteenth century it seemed clear that light was an electromagnetic wave. But today scientists accept that light can behave both as a wave and a particle, the latter known as the photon. Understanding light in terms of photons has enabled the development of some of the most important technology of the last fifty years. With Frank Close, Professor Emeritus of Physics at the University of Oxford; Wendy Flavell, Professor of Surface Physics at the University of Manchester; and Susan Cartwright, Senior Lecturer in Physics and Astronomy at the University of Sheffield.

Featured Podcast