Pi
In Our Time2 Syys 2004

Pi

Melvyn Bragg and guests discuss the history of the most detailed number in nature. In the Bible's description of Solomon's temple it comes out as three, Archimedes calculated it to the equivalent of 14 decimal places and today's super computers have defined it with an extraordinary degree of accuracy to its first 1.4 trillion digits. It is the longest number in nature and we only need its first 32 figures to calculate the size of the known universe within the accuracy of one proton. We are talking about Pi, 3.14159 etc, the number which describes the ratio of a circle's diameter to its circumference. How has something so commonplace in nature been such a challenge for maths? And what does the oddly ubiquitous nature of Pi tell us about the hidden complexities of our world? With Robert Kaplan, co-founder of the Maths Circle at Harvard University, Eleanor Robson, Lecturer in the Department of History and Philosophy of Science at Cambridge University; and Ian Stewart, Professor of Mathematics at the University of Warwick.

Jaksot(1081)

Civility

Civility

Melvyn Bragg and guests discuss the idea that Civility, in one of its meanings, is among the most valuable social virtues: the skill to discuss topics that really matter to you, with someone who disag...

31 Heinä 202551min

Dragons

Dragons

Melvyn Bragg and guests explore dragons, literally and symbolically potent creatures that have appeared in many different guises in countries and cultures around the world. Sometimes compared to snake...

24 Heinä 202546min

Barbour's 'Brus'

Barbour's 'Brus'

Melvyn Bragg and guests discuss John Barbour's epic poem The Brus, or Bruce, which he wrote c1375. The Brus is the earliest surviving poem in Older Scots and the only source of many of the stories of ...

17 Heinä 202549min

The Evolution of Lungs

The Evolution of Lungs

Melvyn Bragg and guests discuss the evolution of lungs and of the first breaths, which can be traced back 400 million years to when animal life spread from rock pools and swamps onto land, as some fis...

10 Heinä 202548min

The Vienna Secession

The Vienna Secession

In 1897, Gustav Klimt led a group of radical artists to break free from the cultural establishment of Vienna and found a movement that became known as the Vienna Secession. In the vibrant atmosphere o...

3 Heinä 202554min

Hypnosis

Hypnosis

Ever since Franz Anton Mesmer induced trance-like states in his Parisian subjects in the late eighteenth century, dressed in long purple robes, hypnosis has been associated with performance, power and...

26 Kesä 202545min

Paul von Hindenburg

Paul von Hindenburg

Melvyn Bragg and guests discuss the life and role of one of the most significant figures in early 20th Century German history. Paul von Hindenburg (1847-1934) had been famous since 1914 as the victori...

19 Kesä 202552min

Copyright

Copyright

In 1710, the British Parliament passed a piece of legislation entitled An Act for the Encouragement of Learning. It became known as the Statute of Anne, and it was the world’s first copyright law. ...

12 Kesä 20251h

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