Physics

30 - A Likely Story: Plato's Timaeus

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Peter looks at Plato's Timaeus, focusing on the divine craftsman or demiurge, the receptacle, and the geometrical atomism of Plato's elemental theory.

39 - Form and Function: Aristotle's Four Causes

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Aristotle's Physics presents four types of cause: formal, material, final and efficient. Peter looks at all four, and asks whether evolutionary theory undermines final causes in nature.

40 - Let's Get Physical: Aristotle's Natural Philosophy

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Before Isaac Newton (and Olivia Newton John), there was Aristotle. Peter looks at his Physics, focusing on the notions of actuality and potentiality and how they help to explain such concepts as time and motion.

41 - Richard Sorabji on Time and Eternity in Aristotle

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Peter talks to Sir Richard Sorabji about Aristotle's physics, focusing on the definition of time and the eternity of the universe.

55 - The Constant Gardener: Epicurus and his Principles

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Peter begins to examine the philosophy of Epicurus, focusing on his empiricist theory of knowledge and his atomic physics.

58 - Reaping the Harvest: Lucretius

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Lucretius’ poem On the Nature of Things sets Epicureanism into verse. Peter takes a look at its treatment of the soul, free will and the swerve and human society.

62 - We Didn’t Start the Fire: the Stoics on Nature

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Peter looks at the Stoic idea of god, a providential fire that pervades nature, and considers their idea of a deterministic and eternally recurring cosmos.

98 - For a Limited Time Only: John Philoponus

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John Philoponus refutes Aristotle’s and Proclus’ arguments for the eternity of the universe, and develops new ideas in physics.

165 - Neither the Time Nor the Place: Hasdai Crescas

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Ḥasdai Crescas shows Aristotelian physics who’s boss, by defending alternative conceptions of time, place and infinity.

172 - All Things Considered: Abū l-Barakāt al-Baghdādī

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Abū l-Barakāt al-Baghdādī makes up his own mind about physics and the soul, and along the way inaugurates a new style of doing philosophy.

214. The Good Book: Philosophy of Nature

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As early medieval science blossoms, Bernard Silvestris and Alan of Lille personify Nature in their philosophical prose-poems.

226. Full of Potential: Thirteenth Century Physics

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Richard Rufus and anonymous commentators on Aristotle explore the nature of motion, time, infinity and space.

240. Animal, Vegetable, Mineral: Albert the Great’s Natural Philosophy

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Albert the Great earns his nickname “universal doctor” by devoting himself to the whole of nature, from geology and botany to the study of human nature.

38. A Day in the Life: Theories of Time

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Ancient Indian cosmology and the Vaiśeṣika defense of the reality of time and space.

279. Quadrivial Pursuits: the Oxford Calculators

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Bradwardine and other thinkers based at Oxford make breakthroughs in physics by applying mathematics to motion.

280. Get to the Point: Fourteenth Century Physics

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Ockham, Buridan, Oresme and Francis of Marchia explore cosmology, atomism, and the impetus involved in motion.

45. Motion Denied: Nāgārjuna on Change

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Nāgārjuna applies his emptiness theory to motion, change, and cognition.

283. Jack Zupko on John Buridan

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Peter speaks to Jack Zupko about John Buridan's secular and parsimonious approach to philosophy.

322. Do the Math: Science in the Palaiologan Renaissance

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Mathematics and the sciences in Byzantium, focusing on scholars of the Palaiologan period like Blemmydes and Metochites.

365. Spirits in the Material World: Telesio and Campanella on Nature

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Was the anti-Aristotelian natural philosophy of Bernardino Telesio and Tommaso Campanella the first modern physical theory?

368. Boundless Enthusiasm: Giordano Bruno

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Giordano Bruno’s stunning vision of an infinite universe with infinite worlds, and his own untimely end.

369. The Harder They Fall: Galileo and the Renaissance

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Did Galileo’s scientific discoveries grow out of the culture of the Italian Renaissance?

387. Helen Hattab on Protestant Philosophy

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An interview with Helen Hattab on the scope and impact of scholastic philosophy among Protestants.

388. Just Add Salt: Paracelsus and Alchemy

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Paracelsus adapts the tradition of alchemical science for use in medicine, and in the process overturns the scientific theories of Aristotle and Galen.

389. The Acid Test: Theories of Matter

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Schegk, Taurellus, Gorlaeus, and Sennert revive atomism to explain chemical reactions, the composition of bodies, and the generation of organisms.

395. Music of the Spheres: Johannes Kepler

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Kepler combines Brahe's observations, Copernicus' astronomy, and Platonist metaphysics.

433. Nature’s Mystery: Science in Renaissance England

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How scientists of the Elizabethan age anticipated the discoveries and methods of the Enlightenment (without necessarily publishing them).

435. Metal More Attractive: William Gilbert and Magnetism

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The cosmological and methodological implications of breakthroughs in the understanding of magnetism and electricity at the turn of the 17th century.

436. Unpathed Waters, Undreamed Shores: Robert Fludd

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Our last figure of the English Renaissance undertakes daring investigations of chemistry, medicine, agriculture, and cosmology – and gets accused of magic and Rosicrucianism.