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In Our Time: Science

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Scientific principles, theory, and the role of key figures in the advancement of science.

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Folgen von In Our Time: Science

293 Folgen
  • Folge vom 08.04.2021
    Pierre-Simon Laplace
    Melvyn Bragg and guests discuss Laplace (1749-1827) who was a giant in the world of mathematics both before and after the French Revolution. He addressed one of the great questions of his age, raised but side-stepped by Newton: was the Solar System stable, or would the planets crash into the Sun, as it appeared Jupiter might, or even spin away like Saturn threatened to do? He advanced ideas on probability, long the preserve of card players, and expanded them out across science; he hypothesised why the planets rotate in the same direction; and he asked if the Universe was deterministic, so that if you knew everything about all the particles then you could predict the future. He also devised the metric system and reputedly came up with the name 'metre'. WithMarcus du Sautoy Simonyi Professor for the Public Understanding of Science and Professor of Mathematics at the University of OxfordTimothy Gowers Professor of Mathematics at the College de FranceAndColva Roney-Dougal Professor of Pure Mathematics at the University of St AndrewsProducer: Simon Tillotson
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  • Folge vom 11.03.2021
    The Late Devonian Extinction
    Melvyn Bragg and guests discuss the devastating mass extinctions of the Late Devonian Period, roughly 370 million years ago, when around 70 percent of species disappeared. Scientists are still trying to establish exactly what happened, when and why, but this was not as sudden as when an asteroid hits Earth. The Devonian Period had seen the first trees and soils and it had such a diversity of sea life that it’s known as the Age of Fishes, some of them massive and armoured, and, in one of the iconic stages in evolution, some of them moving onto land for the first time. One of the most important theories for the first stage of this extinction is that the new soils washed into oceans, leading to algal blooms that left the waters without oxygen and suffocated the marine life. The image above is an abstract group of the huge, armoured Dunkleosteus fish, lost in the Late Devonian ExtinctionWith Jessica Whiteside Associate Professor of Geochemistry in the Department of Ocean and Earth Science at the University of SouthamptonDavid Bond Professor of Geology at the University of HullAndMike Benton Professor of Vertebrate Paleontology at the School of Life Sciences, University of Bristol.
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  • Folge vom 04.02.2021
    Emilie du Châtelet
    Melvyn Bragg and guests discuss one of the outstanding French mathematicians and natural philosophers of the 18th Century, celebrated across Europe. Emilie du Châtelet, 1706-49, created a translation of Newton’s Principia from Latin into French that helped spread the light of mathematics on the emerging science, and her own book Institutions de Physique, with its lessons on physics, was welcomed as profound. She had the privileges of wealth and aristocracy, yet had to fight to be taken seriously as an intellectual in a world of ideas that was almost exclusively male. WithPatricia Fara Emeritus Fellow of Clare College, CambridgeDavid Wootton Anniversary Professor of History at the University of YorkAndJudith Zinsser Professor Emerita of History at Miami University of Ohio and biographer of Emilie du Châtelet.Producer: Simon Tillotson
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  • Folge vom 31.12.2020
    Eclipses
    To celebrate Melvyn Bragg’s 27 years presenting In Our Time, five well-known fans of the programme have chosen their favourite episodes. Guy Garvey, lyricist and lead singer of the band Elbow, has selected the episode on eclipses, first broadcast in December 2020. Solar eclipses are some of life’s most extraordinary moments, when day becomes night and the stars come out before day returns either all too soon or not soon enough, depending on what you understand to be happening. In ancient China, for example, there was a story that a dragon was eating the sun and it had to be scared away by banging pots and pans if the sun were to return. Total lunar eclipses are more frequent and last longer, with a blood moon coloured red like a sunrise or sunset. Both events have created the chance for scientists to learn something remarkable, from the speed of light, to the width of the Atlantic, to the roundness of the Earth, to discovering helium and proving Einstein’s Theory of General Relativity.With Carolin Crawford Public Astronomer based at the Institute of Astronomy, University of Cambridge and a fellow of Emmanuel CollegeFrank Close Emeritus Professor of Physics at the University of OxfordAndLucie Green Professor of Physics and a Royal Society University Research Fellow at Mullard Space Science Laboratory at University College LondonProducers: Simon Tillotson and Julia JohnsonSpanning history, religion, culture, science and philosophy, In Our Time from BBC Radio 4 is essential listening for the intellectually curious. In each episode, host Melvyn Bragg and expert guests explore the people, ideas, events and discoveries that have shaped our world. In Our Time is a BBC Studios production
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