In Our Time With Melvyn Bragg Folgen

Melvyn Bragg and guests discuss the philosophical ideas of William Ockham including Ockham's Razor. In the small village of Ockham, near Woking in Surrey, stands a church. Made of grey stone, it has a pitched roof and an unassuming church tower but parts of it date back to the 13th century. This means they would have been standing when the village witnessed the birth of one of the greatest philosophers in Medieval Europe. His name was William and he became known as William of Ockham.William of Ockham’s ideas on human freedom and the nature of reality influenced Thomas Hobbes and helped fuel the Reformation. During a turbulent career he managed to offend the Chancellor of Oxford University, disagree with his own ecclesiastical order and get excommunicated by the Pope. He also declared that the authority of rulers derives from the people they govern and was one of the first people so to do. Ockham’s razor is the idea that philosophical arguments should be kept as simple as possible, something that Ockham himself practised severely on the theories of his predecessors. But why is William of Ockham significant in the history of philosophy, how did his turbulent life fit within the political dramas of his time and to what extent do we see his ideas in the work of later thinkers such as Thomas Hobbes and even Martin Luther?With Sir Anthony Kenny, philosopher and former Master of Balliol College, Oxford; Marilyn Adams, Regius Professor of Divinity at Oxford University; Richard Cross, Professor of Medieval Theology at Oriel College, Oxford

Melvyn Bragg and guests discuss the Siege of Orléans, when Joan of Arc came to the rescue of France and routed the English army with the help of God. The perfidious English then burnt her as a heretic in Rouen marketplace. At least that's the story we're told but the truth involves the murky world of French court politics, labyrinthine dynastic claims, mass religious hysteria and English military and political incompetenceLooking back on the events that followed, the Duke of Bedford wrote to King Henry VI and declared “all things prospered for you till the time of the siege of Orleans, taken in hand God knoweth by what advice”.But what happened at the siege of Orleans, did Joan of Arc really rescue the city and how significant was the battle in changing the course of the 100 Years' War and the subsequent histories of England and France?With Anne Curry, Professor of Medieval History at the University of Southampton; Malcolm Vale, Fellow and Tutor in History at St John’s College, Oxford; Matthew Bennett, Senior Lecturer at the Royal Military Academy, Sandhurst.

Melvyn Bragg and guests discuss mysterious phenomena called Gravitational Waves in contemporary physics. The rather un-poetically named star SN 2006gy is roughly 150 times the size of our sun. Last week it went supernova, creating the brightest stellar explosion ever recorded. But among the vast swathes of dust, gas and visible matter ejected into space, perhaps the most significant consequences were invisible – emanating out from the star like the ripples from a pebble thrown into a pond. They are called Gravitational Waves, predicted by Einstein and much discussed since, their existence has never actually been proved but now scientists may be on the verge of measuring them directly. To do so would give us a whole new way of seeing the cosmos. But what are gravitational waves, why are scientists trying to measure them and, if they succeed, what would a gravitational picture of the universe look like?With Jim Al-Khalili, Professor of Physics at the University of Surrey; Carolin Crawford, Royal Society Research Fellow at the Institute of Astronomy, Cambridge; Sheila Rowan, Professor in Experimental Physics in the Department of Physics and Astronomy at the University of Glasgow