Episode

In Our Time

BBC Radio 4

Society & Culture, History

Chart Positions

Top 200 197
History 13
Society & Culture 47

Melvyn Bragg and guests discuss the history of ideas

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Cosmic Rays

May 16th, 2013

Episode 298 of 522 episodes

Melvyn Bragg and his guests discuss cosmic rays. In 1912 the physicist Victor Hess discovered that the Earth is under constant bombardment from radiation coming from outside our atmosphere. These so-called cosmic rays have been known to cause damage to satellites and electronic devices on Earth, but most are absorbed by our atmosphere. The study of cosmic rays and their effects has led to major breakthroughs in particle physics. But today physicists are still trying to establish where these highly energetic subatomic particles come from. With: Carolin Crawford Gresham Professor of Astronomy and a member of the Institute of Astronomy at the University of Cambridge Alan Watson Emeritus Professor of Physics at the University of Leeds Tim Greenshaw Professor of Physics at the University of Liverpool. Producer: Thomas Morris.

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