In Our Time With Melvyn Bragg Folgen

Melvyn Bragg and his guests discuss randomness and pseudorandomness.Randomness is the mathematics of the unpredictable. Dice and roulette wheels produce random numbers: those which are unpredictable and display no pattern. But mathematicians also talk of 'pseudorandom' numbers - those which appear to be random but are not. In the last century random numbers have become enormously useful to statisticians, computer scientists and cryptographers. But true randomness is difficult to find, and mathematicians have devised many ingenious solutions to harness or simulate it. These range from the Premium Bonds computer ERNIE (whose name stands for Electronic Random Number Indicator Equipment) to new methods involving quantum physics.Digital computers are incapable of behaving in a truly random fashion - so instead mathematicians have taught them how to harness pseudorandomness. This technique is used daily by weather forecasters, statisticians, and computer chip designers - and it's thanks to pseudorandomness that secure credit card transactions are possible.With:Marcus du SautoyProfessor of Mathematics at the University of OxfordColva Roney-DougalSenior Lecturer in Pure Mathematics at the University of St AndrewsTimothy GowersRoyal Society Research Professor in Mathematics at the University of CambridgeProducer: Thomas Morris.

Melvyn Bragg and his guests discuss Byron's poem Childe Harold's Pilgrimage.In 1812 the 24-year-old Lord Byron published the first part of a long narrative poem. It caused an instant sensation. "I awoke one morning and found myself famous", wrote Byron in his memorandum book, and the first edition sold out in three days. The poem narrates the life of an aristocrat on a grand tour of Europe. Its central character is the first Byronic hero, a flawed but charismatic young man modelled on the poet.As well as offering a self-portrait of Byron as a young man, Childe Harold is a fascinating snapshot of Europe at the beginning of the nineteenth century, a place ravaged by revolution and war; the poem also gives us an insight into the political and intellectual concerns of its author.With:Jonathan BateProfessor of English Literature at the University of WarwickJane StablerReader in Romanticism at the University of St AndrewsEmily Bernhard JacksonAssistant Professor in Nineteenth-Century English Literature at the University of Arkansas.Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the far-reaching consequences of the Industrial Revolution. After more than a century of rapid technological change, and the massive growth of its urban centres, Britain was changed forever. Lifestyles changed as workers moved from agricultural settlements to factory towns: health, housing and labour relations were all affected. But the effects were both social and intellectual, as thinkers originated theories to deal with the new realities of urban living, mass production and a consumer society. With:Jane HumphriesProfessor of Economic History and Fellow of All Souls College, University of OxfordEmma GriffinSenior Lecturer in History at the University of East AngliaLawrence GoldmanFellow and Tutor in History at St Peter's College, University of OxfordProducer: Thomas Morris.