Podcasts about Julian Barbour

What if quantum mechanics is not fundamental? What if time itself is an illusion? In this new episode, physicist Julian Barbour returns to share his most radical ideas yet. He proposes that the universe is built purely from ratios, that time is not fundamental, and that quantum mechanics might be replaced entirely without the need for wave functions or Planck's constant. This may be the simplest vision of reality ever proposed. As a listener of TOE you can get a special 20% off discount to The Economist and all it has to offer! Visit https://www.economist.com/toe Join My New Substack (Personal Writings): https://curtjaimungal.substack.com Listen on Spotify: https://tinyurl.com/SpotifyTOE Become a YouTube Member (Early Access Videos): https://www.youtube.com/channel/UCdWIQh9DGG6uhJk8eyIFl1w/join Videos Mentioned: Julian's previous appearance on TOE: https://www.youtube.com/watch?v=bprxrGaf0Os Neil Turok on TOE (Big Bang): https://www.youtube.com/watch?v=ZUp9x44N3uE Neil Turok on TOE (Black Holes): https://www.youtube.com/watch?v=zNZCa1pVE20 Debunking “All Possible Paths”: https://www.youtube.com/watch?v=XcY3ZtgYis0 John Vervaeke on TOE: https://www.youtube.com/watch?v=GVj1KYGyesI Jacob Barandes & Scott Aaronson on TOE: https://www.youtube.com/watch?v=5rbC3XZr9-c The Dark History of Anti-Gravity: https://www.youtube.com/watch?v=eBA3RUxkZdc Peter Woit on TOE: https://www.youtube.com/watch?v=TTSeqsCgxj8 Books Mentioned: The Monadology – G.W. Leibniz: https://www.amazon.com/dp/1546527664 The Janus Point – Julian Barbour: https://www.amazon.ca/dp/0465095461 Reflections on the Motive Power of Heat – Carnot: https://www.amazon.ca/dp/1514873974 Lucretius: On the Nature of Things: https://www.amazon.ca/dp/0393341364 Heisenberg and the Interpretation of QM: https://www.amazon.ca/dp/1107403510 Quantum Mechanics for Cosmologists: https://books.google.ca/books?id=qou0iiLPjyoC&pg=PA99 Faraday, Maxwell, and the EM Field: https://www.amazon.ca/dp/1616149426 The Feeling of Life Itself – Christof Koch: https://www.amazon.ca/dp/B08BTCX4BM Articles Mentioned: Time's Arrow and Simultaneity (Barbour): https://arxiv.org/pdf/2211.14179 On the Moving Force of Heat (Clausius): https://sites.pitt.edu/~jdnorton/teaching/2559_Therm_Stat_Mech/docs/Clausius%20Moving%20Force%20heat%201851.pdf On the Motions and Collisions of Elastic Spheres (Maxwell): http://www.alternativaverde.it/stel/documenti/Maxwell/1860/Maxwell%20%281860%29%20-%20Illustrations%20of%20the%20dynamical%20theory%20of%20gases.pdf Maxwell–Boltzmann distribution (Wikipedia): https://en.wikipedia.org/wiki/Maxwell–Boltzmann_distribution Identification of a Gravitational Arrow of Time: https://arxiv.org/pdf/1409.0917 The Nature of Time: https://arxiv.org/pdf/0903.3489 The Solution to the Problem of Time in Shape Dynamics: https://arxiv.org/pdf/1302.6264 CPT-Symmetric Universe: https://arxiv.org/pdf/1803.08928 Mach's Principle and Dynamical Theories (JSTOR): https://www.jstor.org/stable/2397395 Timestamps: 00:00 Introduction 01:35 Consciousness and the Nature of Reality 3:23 The Nature of Time and Change 7:01 The Role of Variety in Existence 9:23 Understanding Entropy and Temperature 36:10 Revisiting the Second Law of Thermodynamics 41:33 The Illusion of Entropy in the Universe 46:11 Rethinking the Past Hypothesis 55:03 Complexity, Order, and Newton's Influence 1:02:33 Evidence Beyond Quantum Mechanics 1:16:04 Age and Structure of the Universe 1:18:53 Open Universe and Ratios 1:20:15 Fundamental Particles and Ratios 1:24:20 Emergence of Structure in Age 1:27:11 Shapes and Their Explanations 1:32:54 Life and Variety in the Universe 1:44:27 Consciousness and Perception of Structure 1:57:22 Geometry, Experience, and Forces 2:09:27 The Role of Consciousness in Shape Dynamics Support TOE on Patreon: https://patreon.com/curtjaimungal Twitter: https://twitter.com/TOEwithCurt Discord Invite: https://discord.com/invite/kBcnfNVwqs #science Learn more about your ad choices. Visit megaphone.fm/adchoices

Julian Barbour is an independent British Physicist and the author of technical and popular books including the best selling "The End of Time" and most recently "The Janus Point: A New Theory of Time". In this lecture, Julian shows just how interesting Newtonian Mechanics can get. Can it be a fundamental theory of space, time and physical reality? This is a tour de force of the history of ideas in physics by an iconoclastic scientists working at the deepest foundations of his subject.   The video version of this lecture can be found at https://youtu.be/VzZbjL_Jvwk which may be helpful.    This is not a regular ToKCast episode - it is highly technical in places. We will return to regular programming for episode 225 when we will have passed 1 million downloads. Thankyou to all fans! If you would like to support ToKCast, go to my Patreon page at https://www.patreon.com/c/tokcast or paypal via https://www.paypal.com/donate?token=qyzc2PwQaXf2XNAZS8g5Ke9eRfYfUs73xlBzXNfM8Bnjdm__ETUCyw86HKQ9wd1jBQ4zVKLsW0uRmB53

In today's episode of Theories of Everything, Curt Jaimungal and Julian Barbour challenge conventional physics by exploring Barbour's revolutionary ideas on time as an emergent property of change, the universe's increasing order contrary to entropy, and the foundational nature of shape dynamics. SPONSOR (THE ECONOMIST): As a listener of TOE you can get a special 20% off discount to The Economist and all it has to offer! Visit https://www.economist.com/toe TOE'S TOP LINKS: - Support TOE on Patreon: https://patreon.com/curtjaimungal (early access to ad-free audio episodes!) - Enjoy TOE on Spotify! https://tinyurl.com/SpotifyTOE - Become a YouTube Member Here: https://www.youtube.com/channel/UCdWIQh9DGG6uhJk8eyIFl1w/join - Join TOE's Newsletter 'TOEmail' at https://www.curtjaimungal.org LINKED MENTIONED: - The Janus Point (Julian Barbour's book): https://www.amazon.com/Janus-Point-New-Theory-Time/dp/0465095461 - ‘Relational Concepts of Space and Time' (Julian Barbour's 1982 paper): https://www.jstor.org/stable/687224 - ‘The Theory of Gravitation' (Paul Dirac's 1958 paper): https://www.jstor.org/stable/100497 - Carlo Rovelli on TOE: https://www.youtube.com/watch?v=hF4SAketEHY - ‘On the Nature of Things' (book): https://www.hup.harvard.edu/books/9780674992009 - Leibniz: Philosophical Writings (book): https://www.amazon.com/Leibniz-Philosophical-Writings-Everymans-University/dp/0460119052 - Elementary Principles of Statistical Mechanics (book): https://www.amazon.com/Elementary-Principles-Statistical-Mechanics-Physics/dp/0486789950 - The interpretations of quantum mechanics in 5 minutes (article): https://curtjaimungal.substack.com/p/the-interpretations-of-quantum-mechanics - Sean Carroll on TOE: https://www.youtube.com/watch?v=9AoRxtYZrZo Timestamps: 00:00 - Introduction 02:12 - Working Outside of Academia 03:53 - Space, Time, Dimension 10:40 - Mach's Principle 21:33 - Mach Confused Einstein 24:22 - Two Particle Universe 31:46 - Carlo Rovelli 35:02 - Julian's Ontology 43:37 - Julian's Theory ‘Shape Statistics' 51:11 - Leinbiz's Philosophical Writings 56:14 - Expansion of the Universe (Scale Invariance) 01:05:02 - Cosmological Principle 01:15:34 - Thermodynamics 01:17:15 - Entropy and Complexity 01:30:40 - Wave Function / Double Slit Experiment 01:39:21 - God 01:44:48 - The Role of Instruments 01:47:44 - Etymology of Pattern and Matter 01:51:25 - Join My Substack! Other Links: - Twitter: https://twitter.com/TOEwithCurt - Discord Invite: https://discord.com/invite/kBcnfNVwqs - iTunes: https://podcasts.apple.com/ca/podcast/better-left-unsaid-with-curt-jaimungal/id1521758802 - Subreddit r/TheoriesOfEverything: https://reddit.com/r/theoriesofeverything #science #sciencepodcast #physics #theoreticalphysics #time #space #dimensions Learn more about your ad choices. Visit megaphone.fm/adchoices

Julian Barbour is a renowned physicist known for his groundbreaking work on the nature of time. In his influential books, The End of Time and The Janus Point he explores the concept of a timeless universe, challenging traditional views. Samuel Kuypers is a theoretical physicist, currently located in Montréal, who is interested in the foundations of quantum theory and time.Topics we discuss are well captured by the timestamps below.Watch on YouTube or X. Listen on Apple Podcasts, Spotify, or any other podcast platform. Follow me on X for updates on future episodes.Click here to support my work. You can also send me bitcoin to this address.Timestamps1:10 - The instant is not in time, time is in the instant6:27 - Time capsules and evidence of time passing9:22 - Newton's view of absolute time and space18:46 - Shape dynamics24:33 - Mathematics of variety37:51 - Newton's theory as a theory of creation56:23 - How shape dynamics relates to general relativity1:06:50 - Entropy and heat death of the universe1:28:13 - Free will and determinism1:33:22 - Carpe diem1:34:13 - Julian's interest in Shakespeare1:40:54 - Question from David Deutsch about quantum theory1:48:56 - Question from Brett Hall about general relativity and QT1:51:51 - Final remarks This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.arjunkhemani.com

Time remains the most misunderstood and mystical dimension of our experience of life. We never seem to have enough time, yet often it seems to drag by too slowly. Enthralled with the possibility of time travel and time machines, we long for the future or regret our past and wish for a way to break out of the linear progression of time. Behind all of this time fascination and obsession is the human urge to manage our destiny and feel in control of our world. Yet the secret to escaping temporal bondage is inside each of us, a soul-given power to visit the past or future and travel through the present at the speed of light. Exploring the 7 secrets of time, Von Braschler reveals how to break free from the physical world and travel through time and space via the energy body. He examines time, timelessness, and time travel from the viewpoint of mystics, shamanic dreamwalkers, and scientists, including Helena Blavatsky, C. W. Leadbeater, Albert Einstein, and Julian Barbour, as well as Hindu spiritual science. Explaining how transcending the physical body offers new hope for the treatment of illness, emotional problems, and addictions, he offers step-by-step instructions and active, out-of-body exercises to develop your time travel abilities and explore the world of energy and spirit. Emphasizing the spiritual wholeness that comes from energy body work, he shows that by visiting the past and the future we can more fully live in the now.

Sam Kuypers is a theoretical physicist who specialises in the physics of time. If you have the time, Sam can take up as much of it as you like telling you about how our ideas of time have changed…over time. As Sam will reveals: times, they are not a-changing. But there is change! Newtonian physics has a notion of time (or at least Newton himself did), Relativity as discovered by Einstein in the early 1900s radically transformed our notion of what time is and now, in the 21st Century, Sam Kuypers and others are beginning to develop a quantum theory of time. And this is why Sam joins me for this episode as we unpack time as a quantum concept: the very topic of Chapter 11 of “The Fabric of Reality” and go deep on Sam's more recent contributions to our understanding of the reality of time. Appropriately, time stamps are below.   You may have to take your time with some of this.     00:00 - Introduction to this episode 05:04 - Introduction to Sam Kuypers 06:30 - The day-to-day of a theoretical physicist 10:30 - What led Sam to Oxford University 12:10 - What was Sam's doctoral thesis about? 15:20 - The importance of Everett 16:30 - “Classical” Time and “universal time”. 27:00 - Julian Barbour and time as a series of instants 30:35 - Spacetime and the timeless view of physical reality. 33:35 - The clash of General Relativity and Quantum Theory I 37:20 - The clash of General Relativity and Quantum Theory II 40:40 - c-numbers and q-numbers 42:30 - The significance of (non) commutability (i.e the Heisenberg Uncertainty Principle). 46:05 - The Page-Wooters Construction (Quantum Time I). 53:15 - Can there be change if nothing is ever changing? (Quantum Time II) 55:31 - The Heisenberg vs Schrödinger “Pictures” of Quantum Theory. 57:35 - What is “locality” in physics? 58:40 - Entanglement and: "Does Quantum Theory allows for faster than light communication?”  1:00:48 - Unitary Quantum Theory (vs: Everettian Quantum Theory) 1:05:33 - Philosophical Realism, Physics 1:06:40 - Does Time Exist? 1:07:58 - Is Time Travel Possible? 1:11:30 - How did Sam find his way into physics? 1:14:30 - The Dutch Enlightenment vs The British Enlightenment 1:20:50 - The Netherlands, international trade, tolerance and specialisation 1:23:08 - The Invention of Free Trade and misconceptions with long lifetimes. 1:16:30 - The peculiar rivalry between European Allies 1:28:40 - Prosperity and Pessimism: Are both on the ascendency? 1:32:19: Why are people special? 1:37:14: Liberalism, Authoritarianism and Climate Change 1:40:25: Science, Morality and (eg: Dutch) Innovation 1:43:30 - Concluding Remarks         

Julian Barbour is a physicist working in the foundations of physics and quantum gravity, with a special interest in time and the history of science. In this episode, Julian and Robinson discuss thermodynamics and the arrows of time, including a new theory of time developed by Julian and his collaborators, which is laid out in his book, The Janus Point: A New Theory of Time. If you're interested in the foundations of physics—which you absolutely should be—then please check out the John Bell Institute (Julian is an Honorary Fellow at the JBI), which is devoted to providing a home for research and education in this important area. At this early stage any donations are immensely helpful. Julian's Website: http://platonia.com/index.html The Janus Point: https://a.co/d/4NVOGqq A History of Thermodynamics: http://platonia.com/A_History_of_Thermodynamics.pdf Quantum without Quantum:  https://arxiv.org/abs/2305.13335 The John Bell Institute: https://www.johnbellinstitute.org OUTLINE 00:00 In This Episode… 00:56 Introduction 04:42 Julian's Interest in Time 07:27 Time's Arrows 23:34 The Problem of Time-Reversal Symmetry 25:54 A Potted Overview of Entropy and Thermodynamics 38:21 Entropy and Time's Arrow 52:32 The Janus Point and a New Theory of Time 01:07:00 Intuition and The Janus Point 01:21:21 Entropy and Entaxy 01:26:00 Cosmic Inflation and Its Problems 01:44:05 Quantum Mechanics without the Wave Function Robinson's Website: http://robinsonerhardt.com Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.  --- Support this podcast: https://podcasters.spotify.com/pod/show/robinson-erhardt/support

Space and time appear in charts as axes oblivious to the points they demarcate. Similarly, we may feel that we, and all the objects of our worlds, are like such points — and spacetime is a container in which we sit.Julian Barbour is a physicist who has spent six decades arguing against this. He takes the relationist approach of Leibniz and Mach: there is no space without objects and no time without change. Rather space is just the geometric relationships between things.Julian has pioneered theories that recover the predictions of Newtonian mechanics and General Relativity that drop their invocation of imperceptible space, time, and spacetime. Recently he has taken an iconoclastic approach to the arrow of time — looking to a new measure of structure, complexity, and the expansion of the universe instead of the traditional accounts in terms of entropy.Find more at: The podcast home: multiverses.xyz Julian's website: platonia.com Julian's books: The Discovery of Dynamics, The End of Time, The Janus Point

En este episodio conocemos la interesante propuesta que nos hace Julian Barbour de la universidad de Oxford sobre que el Tiempo podría ir en dos direcciones. Escucha el episodio completo en la app de iVoox, o descubre todo el catálogo de iVoox Originals

Julian Barbour's latest book, The Janus Point: A New Theory of Time takes us on a wild hallucinatory ride through the story of everything ever, all at once. Such are the questions of mathematical cosmologists, who look toward the perfection of numbers in search of an origin story for this thing we call existence... Support the podcast by becoming a Patron @DemystifySci ªº¬˚∆≤≥≤≥ https://www.patreon.com/demystifysci ≤≥≤≥∆˚¬ºª #JulianBarbour #Physics #Time Check our short-films channel, @DemystifyingScience: https://youtu.be/1OCL5Lq8m6s ªº¬˚∆≤≥≤≥ Join the mailing list https://bit.ly/3v3kz2S​ ≤≥≤≥∆˚¬ºª PODCAST INFO: Anastasia completed her PhD studying microbial communication at Columbia University. When not talking to brilliant people or making movies, she spends her time painting and exploring the woods. Michael Shilo also did his PhD at Columbia studying the elastic properties of molecular water. When he's not in the film studio, he's exploring sound in music. They are both freelance professors at various universities. Blog: http://demystifyingscience.com/blog RSS: https://anchor.fm/s/2be66934/podcast/rss Donate: https://bit.ly/3wkPqaDSwag: https://bit.ly/2PXdC2y SOCIAL: - Discord: https://discord.gg/HXQNjTvZCb - Facebook: https://www.facebook.com/groups/demystifyingscience - Instagram: https://www.instagram.com/demystifysci/ - Twitter: https://twitter.com/demystifysci --- Support this podcast: https://anchor.fm/demystifying-science/support

YouTube link: https://youtu.be/r_fUPbBNmBw Sponsors: https://brilliant.org/TOE for 20% off. For Algo's podcast https://www.youtube.com/channel/UC9IfRw1QaTglRoX0sN11AQQ and website https://www.algo.com/.  Merch (until end of Dec 2021): https://tinyurl.com/TOEmerch Patreon: https://patreon.com/curtjaimungal Crypto: https://tinyurl.com/cryptoTOE PayPal: https://tinyurl.com/paypalTOE Twitter: https://twitter.com/TOEwithCurt Discord Invite: https://discord.com/invite/kBcnfNVwqs iTunes: https://podcasts.apple.com/ca/podcast/better-left-unsaid-with-curt-jaimungal/id1521758802 Pandora: https://pdora.co/33b9lfP Spotify: https://open.spotify.com/show/4gL14b92xAErofYQA7bU4e Subreddit r/TheoriesOfEverything: https://reddit.com/r/theoriesofeverything LINKS MENTIONED (affiliate links for books): -The Order of Time by Carlo Rovelli: https://amzn.to/3ISZYo7 -The Master and His Emissary by Iain McGilchrist: https://amzn.to/325VKso -Stephon Alexander's "Fear of a Black Universe": https://amzn.to/3seSpTb -Conversations on Quantum Gravity: https://amzn.to/3dXtafH -Quantum principle of relativity: https://arxiv.org/abs/1910.02780 TIMESTAMPS: 00:00:00 Introduction 00:03:27 The relational interpretation of quantum mechanics 00:12:29 Why is there consistency in the world? 00:16:35 How can "relationships" be more fundamental than "things"? 00:24:05 Visualizing the relations 00:33:43 Philosophy and physics (why modern physicists are philosophobic) 00:45:11 Definition of the "Universe" (does physical law stand "outside" the universe?) 00:51:06 The problems with the concept of "Universe"  00:56:00 Many Worlds (why Carlo doesn't like this interpretation) 01:00:40 Mathematics alone isn't sufficient ("between reality and math, there's a gap") 01:06:13 It's not false to say the Sun revolves around the Earth 01:08:45 An ecumenical approach to understanding the Universe and religions 01:15:29 Anti-foundationalism has taken over philosophy 01:20:04 Entropic Time / Thermal Time (illusion of time) 01:38:18 Lee Smolin's view on time (that time is the MOST real quantity) 01:48:26 Julian Barbour's theory of time 01:56:00 Thoughts on Wolfram's model 02:05:08 Thoughts on Sean Carole's Many Worlds 02:14:08 Donald Hoffman (and briefly Eric Weinstein) 02:22:04 What do we mean by "real"? (Wittgenstein's language games) 02:28:09 Does there exist what lies outside your knowledge? 02:32:25 "Philosophy is a cure against wrong questions" 02:43:11 Information paradox is like "falling in love with holography" (based in dogma) 02:50:23 Does learning math / physics get easier with age or harder? 02:51:33 What Carlo would have done differently in developing LQG? 02:53:27 [Stephon Alexander] How does time play into Quantum Gravity? 02:55:48 [Bernardo Kastrup] How does Carlo's view of "relations" not lead to an infinite regress? 03:00:43 Idealism vs Materialism (science doesn't presume a metaphysic) 03:12:33 Hard Problem of Consciousness is a "confusion" 03:17:36 Forget about Philosophical Zombies -- Think Philosophical Babies 01:38:29 [Nikhil Ns] Quantum principle of relativity 03:23:53 [goodsirknight] Carlo's LSD experience and the satori moment's influence on LQG 03:34:25 [Aaron Heidari] Alfred North Whitehead 03:38:13 We don't need new ideas for quantum gravity * * * Just wrapped (April 2021) a documentary called Better Left Unsaid http://betterleftunsaidfilm.com on the topic of "when does the left go too far?" Visit that site if you'd like to watch it. Learn more about your ad choices. Visit megaphone.fm/adchoices

Sadia, in her four episodes on unsolved problems in physics (first episode here), was clearly heavily inspired by the work of Julian Barbour. So we invited Julian to join us for an episode and got a chance to ask him questions about his theories. Julian is a world-renowned physicist and author of several books on physics including The Janus Point, The End of Time, and The Discovery of Dynamics. His theories include a challenge to the prevailing theory of entropy (i.e. heat death) and even hint as possible apparent teleology in cosmology (in this case a tendency towards novelty and variety.) We are very excited to have him on the show and to answer our questions about his theories. --- Support this podcast: https://anchor.fm/four-strands/support

Julian Barbour is the author of the highly regarded The Discovery of Dynamics and the bestseller The End of Time and now, The Janus Point. He received his PhD in physics from the University of Cologne in 1968. He is a past visiting professor of physics at the University of Oxford and lives on the edge of the scenic Cotswolds, UK. A major new work of physics, The Janus Point will transform our understanding of the nature of existence. In a universe filled by chaos and disorder, Julian Barbour makes the radical argument that the growth of order drives the passage of time — and shapes the destiny of the universe. Time is among the universe's greatest mysteries. Why, when most laws of physics allow for it to flow forward and backward, does it only go forward? Physicists have long appealed to the second law of thermodynamics, held to predict the increase of disorder in the universe, to explain this. In The Janus Point, physicist Julian Barbour argues that the second law has been misapplied and that the growth of order determines how we experience time. In his view, the big bang becomes the "Janus point," a moment of minimal order from which time could flow, and order increase, in two directions. Julian Barbour on "The Janus Point: A New Theory of Time" | Videos: https://youtube.com/watch?v=FMD8B7VRX0w&feature=share https://www.youtube.com/watch?v=0E0NmHQ0WLc 00:00:00 Intro 00:02:57 The story of the book cover. 00:04:33 What does time mean to you? 00:05:36 The influence of Ernst Mach. 00:09:11 About the "Royal" Zero. 00:28:30 Entaxy, thermodynamics and statistcal mechanics. 00:35:57 The cyclic universe. 00:41:28 The theoretical virtues of the Janus Point. 00:55:05 Is there a necessity for a theory of quantum gravity? 01:07:00 What is the failure of the "singularity" theory of cosmogenesis? 01:09:00 The essence of the Janus Point theory. 01:17:58 The Borde-Guth-Vilenkin Theorem 01:21:25 How do you reconcile the Janus Point Paradigm with current observations? 01:38:00 What would you put on a timeless monolith? 01:43:00 What is now possible that you once thought was not as a younger man? LinkedIn Jobs is the best platform for finding the right candidate to join your business this fall. It's the largest marketplace for job seekers in the world, and it has great search features so that you can find candidates with any hard or soft skills that you need. And now, you can post a job for free. Just visit linkedin.com/impossible to post a job for free.  Audible is hands-down my favorite platform for consuming podcasts, fiction and nonfiction books! With an Audible membership, you can download titles and listen offline, anytime, anywhere. The Audible app is free and can be installed on all smartphones and tablets. You can listen across devices without losing your spot. Audible members don't have to worry about using their credits right away.  Start your free 30-day trial today:  Audible.com/impossible or text “impossible” to 500-500

Is time what clocks measure, or is it the difference between the shape of two triangles? Explore the answer, and discover: Why Barbour believes the universe is changing shape rather than expanding Why it is important to remember that size is relative What kinematic relativity is, and why it is so essential to Barbour's work   What the theory of black holes requires of the universe Physicist and author of The Discovery of Dynamics and The Janus Point: A New Theory of Time, Julian Barbour, joins the show for an eye-opening and mind-probing deep dive into his ideas of time and space, and how they've been shaped by and differ from the ideas of other great thinkers in history, like Isaac Newton, Albert Einstein, and Johannes Kepler. “Science is always tentative, but my feeling is that people have lost some contact with the real foundation of things, of what reality is really like, and so I think it certainly doesn't harm to go back and see what people like Kepler did,” he adds. Barbour explains the development and details of his books, elaborating on this statement: “You cannot imagine finding your way if there's nothing by which you can see your way.”  He also shares his most recent ideas with listeners, such as the idea that the complexity of the universe might literally be time itself, and the most important part of energy itself. Interested in learning more? Tune in and be sure to check out Barbour's most recent book, The Janus Point: A New Theory of Time. Episode also available on Apple Podcasts: apple.co/30PvU9C

As we come to the end of a year most of us would be keen to forget, I thought it was time to have a look at…time. Today on the show, I’ve got physicist Julian Barbour, who has a new theory about the Big Bang and time, which he elucidates in his latest book, The Janus Point: A New Theory of Time.This one gets a little more complex than a typical episode of On the Edge with Andrew Gold, so I’m going to break down a few things I think I’ve learned. Firstly, Julian (official website) posits that the old Newtonian view of time is not entirely right, because it puts us inside a box. Thinking outside the box, Julian believes time is not necessarily a thing on a map like some of us thought…the only thing that time is, is a series of changing shapes of the universe. To differentiate between the past and the future, it’s just a case of seeing things like atoms and particles becoming less simple and structured, until complex things like us are able to exist. One of the most amazing parts of Julian’s theory however, is that time goes back to the Big Bang – and then goes the other way. So before the Big Bang is just another timeline going in the other direction. Bit weird, right?I always edit down the interviews a fair bit to make them quick and accessible, so I’ve lost some of Julian’s most intriguing – yet complex – material, so if you are interested in more, make sure to get hold of the Janus Point: A New Theory of Time on Amazon. There, you’ll get to the real thermodynamics and theories and historical stuff.Many of you are going to be fascinated, and I’m proud to have such a remarkable mind on the show. Others of you might find it difficult – I would suggest you stay with it, because we do go into other fun things like aliens, what happens at the end of time, whether it’d be good to live forever, and whether we have free will (or are things all decided for us) in the latter part.If you enjoy the show, please take a look at my Patreon website and consider signing up to a tier. It takes SO much time to get this ready each week, and I appreciate the support a lot. Lots of cool benefits too! Here's that link again, patreon.com/andrewgold Click here to go ads-free and support the show See acast.com/privacy for privacy and opt-out information.

The concept of time is one whose physical theory continues to elude scientists. What are advances in the theories of time? On this episode, Dr. Julian Barbour discussed his book, The Janus Point.

Abweichungen zwischen subjektiver und objektiver Zeit; Bezug auf die Bücher 'The End of Time' von Julian Barbour und 'The Order of Time' von Carlo Rovelli; Warum Zeitfluss eine Illusion sein kann.

JULIAN BARBOUR (https://www.edge.org/memberbio/julian_barbour) is a theoretical physicist specializing in the study of time and motion; emeritus visiting professor in physics at the University of Oxford; and author of The Janus Point (forthcoming, 2020) and The End of Time. The Conversation: https://www.edge.org/conversation/julian_barbour-the-universe-is-not-in-a-box

More at philosophytalk.org/shows/reality-time. St. Augustine suggested that when we try to grasp the idea of time, it seems to evade us: "What then is time? If no one asks me, I know what it is. If I wish to explain it to him who asks, I do not know." So is time real or merely an artificial construct? Is time a fundamental or emergent property of our universe or a part of our cognitive apparatus? Do we live in a continuum with a definite past and present, or do we live in a succession of ‘Nows’, and if the latter is the case, how does it affect our perception of memory or recollection? John and Ken take their time with Julian Barbour from the University of Oxford, author of "The End of Time: The Next Revolution in Physics."

Harvey Brown (Oxford) gives a talk in the colloquium "Journeys in Platonia: Celebrating 50 Years Since The End of Time" at the 17th UK and European Meeting on the Foundations of Physics (29-31 July, 2013) titled "Leibniz, Mach and Barbour". Abstract: My comments will be concerned with the way that Leibniz's and Mach's thinking on the nature of space have influenced Julian Barbour's approach to the formulation of dynamical theories.

Sean Gryb (Radboud) gives a talk in the colloquium "Journeys in Platonia: Celebrating 50 Years Since The End of Time" at the 17th UK and European Meeting on the Foundations of Physics (29-31 July, 2013) titled "Barbour's Shape Space as an Ontology for Gravity". Abstract: I will give a personal account of the development of the conformally invariant version of ‘Shape Dynamics’. The story will be told from three perspectives: i) a historical one, highlighting the role of College Farm and the unique interactions with Julian Barbour, ii) a philosophical one, describing a simple observation about the meaning of local scale in physics, and iii) a formal one, showing how an early observation of Poincare ́ combined with York’s method for solving the initial value problem in General Relativity led a concrete implementation of Barbour’s ontology.

Julian Barbour, visiting professor at the University of Oxford and the author of The End of Time, addresses the question, Does Time Exist? Barbour explores the history of scientific thought on the concept of time and presents his own interpretations of what time is.

Julian Barbour, visiting professor at the University of Oxford and the author of The End of Time, addresses the question, Does Time Exist? Barbour explores the history of scientific thought on the concept of time and presents his own interpretations of what time is.

Julian Barbour, visiting professor at the University of Oxford and the author of The End of Time, addresses the question, Does Time Exist? Barbour explores the history of scientific thought on the concept of time and presents his own interpretations of what time is.

Sometimes I go to funny places in my mind. Do you ever go exploring? Lately I've been imagining a world without oil. No oil for cars, no oil for 18-wheelers, no oil for jets. Not even any oil for construction equipment or ambulances. Same world, but smack out of oil. Can you see it? The funny thing is that it will happen. When that day comes, we may or may not have harnessed a renewable source of energy, but run out of oil we most certainly will. What will the history books say of you and me? The June 4, 2005 issue of http://pubs.usgs.gov/dds/dds-060 (The Economist) tells us the Chinese are learning to drive. Last year they purchased more than 5 million cars, compared to the 17 million purchased by Americans. Next year they'll surpass the Japanese to become the second-largest car market on earth. And that's just the beginning. China's rumbling economic growth means that in just a few years she could buy 5 times as many cars as the US each year and consume as much oil as we currently use in half a decade. And you thought the price of gas was high. According to http://www.platonia.com/ideas.html (the most recent U.S. Geological Survey (2000,)) there are 3,000 billion barrels of oil left in the world. Total oil production in 2000 was 25 billion barrels. So if world oil consumption increases at an average rate of 1.4 percent per year, the world's oil supply will not be exhausted until the year 2056. But that scenario doesn't consider the Chinese. If they punch the accelerator, our fifty-year supply could be gone in fifteen. The internet is looking more and more vital, is it not? I'm not trying to play Chicken Little here, “The sky is falling! The sky is falling!” My goal today is only to open the eyes of your imagination. There are lots of things to think that aren't being properly thunk, but if we all pitch in, we might be able to think them all. Here are just a few: Did J.M. Barrie intend for Peter Pan's ticking crocodile to represent how Time devours our youth? And if so, how deep does the symbolism run in this 100 year-old story? Jesus always “lifted his eyes toward heaven” when he prayed, so why do we always bow our heads and close our eyes? If color is a language, which colors are the verbs? What constitutes a verb in the language of music? Why do theoretical physicists not take http://wizardacademy.org/academydescription.asp?ID= (the ideas) of Julian Barbour more seriously? If your life ended today, what would you regret you had left undone? Sometimes it's good to go exploring in your mind. You can never be certain what you'll find. Roy H. Williams

Melvyn Bragg and guests discuss the shape of the universe. In the Beginning, runs one account, was the Big Bang. All matter in existence today originated around 13 billion years ago in a phenomenally hot, extraordinarily condensed primordial atom that exploded with incredible force. Hydrogen and helium were shot across the firmament, gravity caused the gases to condense into clouds and in these clouds the first stars were formed, then galaxies came and more galaxies in clusters, onwards and outwards, ever expanding. It is still expanding, runs the orthodox account, and may even be speeding up. It is still creating new galaxies and it continues to colonise more and more of infinite space, despite the fact that it is supposedly infinite itself.So, if our universe is expanding, what is it expanding into? If it is already infinite how can it be getting any bigger? And is there really only one?With Sir Martin Rees, Royal Society Research Professor in Astronomy and Physics, Cambridge University; Julian Barbour, Independent Theoretical Physicist; Janna Levin, Advanced Fellow in Theoretical Physics at the University of Cambridge.

Melvyn Bragg and guests discuss the shape of the universe. In the Beginning, runs one account, was the Big Bang. All matter in existence today originated around 13 billion years ago in a phenomenally hot, extraordinarily condensed primordial atom that exploded with incredible force. Hydrogen and helium were shot across the firmament, gravity caused the gases to condense into clouds and in these clouds the first stars were formed, then galaxies came and more galaxies in clusters, onwards and outwards, ever expanding. It is still expanding, runs the orthodox account, and may even be speeding up. It is still creating new galaxies and it continues to colonise more and more of infinite space, despite the fact that it is supposedly infinite itself.So, if our universe is expanding, what is it expanding into? If it is already infinite how can it be getting any bigger? And is there really only one?With Sir Martin Rees, Royal Society Research Professor in Astronomy and Physics, Cambridge University; Julian Barbour, Independent Theoretical Physicist; Janna Levin, Advanced Fellow in Theoretical Physics at the University of Cambridge.