Podcasts about General relativity

What happens to gravity when matter converts to energy? Neil deGrasse Tyson and co-host Paul Mecurio dive into fan questions about the speed of light, time machine mistakes, and what Neil would do if he were an alien.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free.Thanks to our Patrons daniel gordon, Amadeusz Synowski, Geo Bucur, Alexander Dent, Kimberly, Jordan, Kieran McMillen, Nico, Nicholas Stegers, Cuyler Cochran, Nicholas Alonso, William, Melissa Harper, Harrison White, DRaymond831, Jeff Imparato, Pascal Sanders, Fabiola Horváth, Ryan McNamara, Damian Spencer, Lucas Hoopingarner, Matt, Greg Juhl, mary beth frohnapfel, Sam Green, Btyan758, Nicole Pernat, MilesHigh, Simon Cooke, Laszlo, Andy Demsky, Adam Arnold, Sergio Silva, Lewis Lobdell, Mortakapo, Thomas Celia, ali kansso, Kenneth Mcfarland, JJ Sullivan, Ivan Gonzalez, Jerry, Dennis Boston, Earnest Stephens, Adriano Boriani, CAlvin Wait, Jeff, sandra newell, Will, Pam, and Ed Einowski for supporting us this week. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

Eric Lerner is a popular science writer, plasma physicist, and long-time collaborator of the late Nobel laureate Hannes Alfvén. He's also one of the featured speakers at our Beyond the Big Bang event this summer in Sesimbra, Portugal. For over thirty years, Lerner has been a leading voice in plasma cosmology and a critic of Big Bang cosmology, who argued for a non-expanding, steady state universe as the central claim of his landmark book The Big Bang Never Happened (affiliate link to puchase: https://amzn.to/4jEez8H). Our conversation dives into the history and foundations of plasma cosmology, from early Birkeland current experiments in the Arctic that revealed the electrical nature of the aurora, to the role of plasma dynamics in the shape and behavior of galaxies. All the hits are in here - from Halton Arp, whose Atlas of Peculiar Galaxies seriously challenged the way that mainstream cosmologists interpret redshift, to the electromagnetic forces often overlooked in mainstream cosmology, to the filamentary plasma structures and cosmic-scale currents that strain the limits of the standard model. This is a deep exploration of alternative cosmology, electric universe theories, and the scientists behind them — from Fred Hoyle to Anthony Peratt — who refused to patch a dying theory and instead asked instead if the universe might be eternal.MAKE HISTORY WITH US THIS SUMMER:https://demystifysci.com/demysticon-2025PATREON https://www.patreon.com/c/demystifysciPARADIGM DRIFThttps://demystifysci.com/paradigm-drift-show00:00 Go!00:05:59 – The Cosmological Pendulum 00:14:09 – Knowledge and Societal Progress 00:22:18 – Big Bang Origins & Ideological Influence 00:29:04 – Technological Stagnation Since the 1970s 00:32:02 – Ideology Replacing Empiricism in Science 00:36:14 – Gravity vs. Electromagnetism in Cosmology 00:41:02 – Evolution of Scientific Funding Models 00:51:11 – Birkeland Currents & Plasma Discoveries 00:56:25 – Centralization of Postwar Science 01:00:18 – Orthodoxy in Medicine 01:00:59 – Decline of Fundamental Research 01:04:39 – Plasma Cosmology vs. Dark Matter 01:08:52 – Capitalism and Research Priorities 01:14:22 – Sustaining Independent Science 01:15:16 – Birkeland, Alfvén & Plasma History 01:22:24 – Einstein's Rise & Cultural Legacy 01:31:05 – General Relativity and Elitism 01:34:44 – Chapman's Math vs. Empirics 01:37:12 – Alfvén's Plasma Breakthroughs 01:43:39 – Plasma Physics vs. Big Bang Theories 01:47:39 – Nobel Prize & MHD's Hidden Flaws 01:58:00 – Filamentary Plasmas vs. MHD 02:00:47 – Pseudoplasmas and MHD Limits 02:02:58 – Defining Plasma as a State of Matter 02:06:00 – Where Plasma Exists in Nature 02:11:17 – The Myth of Mathematical Models 02:21:10 – Scientific vs. Aesthetic Cosmology 02:29:55 – Failed Big Bang Predictions 02:36:01 – Alternatives to the Expanding Universe 02:43:09 – Large-Scale Structures and Cosmic Age 02:50:10 – Public Science and Open Debate 02:55:16 – Toward a New Cosmological Paradigm#plasma #bigbang #darkmatter #electricuniverse, #cosmology, #astrophysics, #scientificrevolution, #fusionenergy, #philosophypodcast, #sciencepodcast, #longformpodcast ABOUS US: Anastasia completed her PhD studying bioelectricity at Columbia University. When not talking to brilliant people or making movies, she spends her time painting, reading, and guiding backcountry excursions. 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. PATREON: get episodes early + join our weekly Patron Chat https://bit.ly/3lcAasBMERCH: Rock some DemystifySci gear : https://demystifysci.myspreadshop.com/allAMAZON: Do your shopping through this link: https://amzn.to/3YyoT98DONATE: https://bit.ly/3wkPqaDSUBSTACK: https://substack.com/@UCqV4_7i9h1_V7hY48eZZSLw@demystifysci

Roger Anderton, producer of the film Einstein's Wrong joins me to talk about how science forced out dissenting opinions on General Relativity in the 1940's if you didn't agree with Einstein's findings. Additionally, after World War Two physics became a tightly controlled military branch of science and published peer reviewed papers from the past were removed from libraries to hide the information. ☕ Support Civilization Cycle Podcast Buy As a Double Espresso

Tim Maudlin is Professor of Philosophy at NYU and Founder and Director of the John Bell Institute for the Foundations of Physics. This is Tim's seventh appearance on the show. He last appeared on episode 237 for a masterclass on Albert Einstein's theory of special relativity, explaining it from the ground up and elucidating some common misconceptions. In this episode Tim returns for a discussion of another of Einstein's major impacts on physics: his theory of general relativity. More particularly, Tim and Robinson discuss black holes, time, paradoxes of distance, Penrose diagrams, figures like Leonard Susskind and Richard Feynman, the curvature of space, and more. If you're interested in the foundations of physics, then please check out the JBI, which is devoted to providing a home for research and education in this important area. Any donations are immensely helpful at this early stage in the institute's life.Tim's Website: www.tim-maudlin.siteThe John Bell Institute: https://www.johnbellinstitute.org00:00:42 An Extended Prelude00:05:08 Naming Names00:10:02 The Difference Between Quantum Mechanics and General Relativity00:13:46 Einstein on General Relativity and Metric00:27:21 More on Coordinates00:40:26 A Novel Coordinate System00:46:25 What Is Special Relativity?00:50:30 The Conflict Between Quantum Theory and Relativity01:02:00 Doing Physics with Geometry01:12:38 Geometry and Special Relativity01:30:20 More on Geometry and Relativity01:36:19 Lorentz Frames01:46:56 Simultaneity02:02:03 John Bell and Special Relativity02:11:00 Paradoxes of Distance02:22:12 A Penrose Diagram02:27:47 Introducing General Relativity02:32:23 The Most Important Experiment About Gravity 02:45:52 Changing the Geometry of Spacetime02:55:28 Curvature of Space03:02:03 Be Careful with Diagrams in Science 03:05:45 The Basic Idea of General Relativity03:10:23 The Equivalence Principle03:19:40 Clocks and Gravity03:28:09 Richard Feynman on General Relativity03:37:00 The Cosmological Constant03:41:56 What Are Black Holes?03:50:45 What Steven Weinberg Got Wrong About General Relativity 04:01:01 Black Holes and the Centrifugal Force Paradox04:06:32 Curved Black Holes and Gödel Spacetime04:19:34 The John Bell InstituteRobinson's Website: http://robinsonerhardt.comRobinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University.

Do we live in one of many universes? On this episode of StarTalk, Neil deGrasse Tyson and comic co-host Chuck Nice investigate the theory of the multiverse with physicist, author, and professor Max Tegmark. (Originally Aired March 22, 2021)NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/cosmic-queries-multiverse-madness-with-max-tegmark/ Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

The causal graph is at the core of Wolfram Physics.It's crucial to the derivations of Special Relativity, General Relativity and Quantum Mechanics.And if that's not enough to convince you that you need to know about the causal graph, how about this:The causal graph is a reflection of the nature of causality, the nature of objectivity, the nature of reality itself.—Einstein's train thought experimentWhat is the multiway graph? video ⋅ podcast ⋅ articleWhat precisely is causal invariance? video ⋅ podcast ⋅ articleCausality ain't what you think it is video ⋅ podcast ⋅ article—The Last Theory is hosted by Mark Jeffery, founder of Open Web MindI release The Last Theory as a video too! Watch here.The full article is here.Kootenay Village Ventures Inc.

Er revolutionierte unser Verständnis von Raum und Zeit: Albert Einstein. Mit seiner Relativitätstheorie stellte er die Physik auf den Kopf und veränderte die Welt für immer. Doch was genau besagt diese bahnbrechende Theorie? Wie beeinflusst sie unser tägliches Leben, und welche faszinierenden Phänomene lassen sich damit erklären? Tim & Max nehmen dich mit auf eine spannende Reise durch die Gedankenwelt Einsteins – von der berühmten Formel E=mc2E=mc^2E=mc2 bis zu den Geheimnissen der schwarzen Löcher. Viel Spaß!

The best part! If you missed the others, don't miss this one. All four strands come together to explain the possibility of time travel and the intrigue that arises when considering travelling to "your" past or future to visit "yourself". Rough timestamps follow: 00:00 introduction and the significance of virtual reality 04:03 Physically possible renderings and resolving paradoxes 07:30 what does VR time travel tell us about physics?  11:05 Personhood and time travel  13:30 Highly unlikely events, the multiverse and “never”. 15:45 General Relativity and time travel 18:51 David's 70th birthday online acknowledgement https://dd70th.weebly.com/ 20:14 Past directed time travel: the consensus 25:25 Black holes, wormholes and time travel 34:10 More on paradoxes and quantum gravity 38:00 The unpredictability of the growth of knowledge . 42:05 Visitors from the future 45:50 Time travel, BoI and Fungibility 56:00 Knowledge Paradoxes? 1:00:40 Creation ex nihilo and “recombination”. 1:06:39 Biological and explanatory knowledge 1:11:32 Useless information and the resolution of knowledge “paradoxes” 1:15:23 The knowledge “crystal” - structure across the multiverse. 1:22:18 The entire biosphere as a computation. 1:26:20 Civilisations as virtual reality renderings. 1:30:00 The four main strands and time travel.

How did Einstein uncover so many fundamental theories of the universe? Neil deGrasse Tyson, comic co-host Harrison Greenbaum, and astrophysicist Janna Levin celebrate the life and legacy of Albert Einstein, accompanied by Neil's interview with director Ron Howard.(Originally Aired March 15, 2019)NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/einsteins-genius-with-ron-howard/ Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to new episodes ad-free and a whole week early.

Join me today as we learn The Truth About Interstellar. Exploring the scientific phenomena of this film that underpin wormholes and black holes, explore the “real estate” of the Gargantua-Pantagruel system, and discover the realities of what happens when you bend spacetime to its extreme.Welcome to the Astrum Sleep Space podcast; the perfect place to come and wind down for the evening while you learn more about the grandeur of the universe. I'm Alex McColgan, the founder of the Astrum brand, and your host on this podcast. Come and listen as I tell you about incredible missions, fascinating discoveries, and everything I've come to love about space.If you like what you're listening to, be sure to check out my YouTube channel at www.youtube.com/@astrumspace for more great space content.

Stephen Wolfram reveals that his first major wow along the path towards a fundamental theory of physics was his realization that General Relativity and Quantum Mechanics are the same theory, played out in different kinds of space.Many other dominos have fallen along the way, from the derivation of Einstein's equations to applications of the ruliad beyond physics.But the aspect of Wolfram Physics that Stephen Wolfram himself finds maybe the most compelling is this mirroring of the two pillars of twentieth century physics.Perhaps General Relativity and Quantum Mechanics aren't as incompatible as they've so long seemed.In this first excerpt from my conversation with Stephen Wolfram, he tells the story of how he came to apply hypergraphs and hypergraph rewriting rules to the universe itself, and arrived at the first traces of a path towards what might be the last theory of physics.—Stephen WolframStephen WolframThe Wolfram Physics ProjectWolfram InstituteWolfram Institute Community DiscordPeople mentioned by StephenMax PiskunovJonathan Gorard—The Last Theory is hosted by Mark Jeffery, founder of Open Web MindI release The Last Theory as a video too! Watch here.Kootenay Village Ventures Inc.

Could you travel back in time through a wormhole? Neil deGrasse Tyson sits down with theoretical physicist and Nobel Laureate Kip Thorne to reflect on discovering gravitational waves with LIGO, the science in the movie Interstellar, black holes, and many more mysteries still yet to be answered.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free.Thanks to our Patrons Colin Michael Gregory, Robert Gehrig, Élysse, patricia pulvirenti, Joe DiFranco, Jesus Osvaldo Bonilla, Cory Martin, Therese Talbot, Kass, Willian Fee, Terrance Richards, J. Spencer Cook "Spencer", Marilyn Webster, Gary Snider, Diego urueta, Stephen, Randall Olson, tucker Coffin, bruce evans, sue ercreich, Fredrik Johansson, Jan Turley, Brian Falk, and Terry Hofmann for supporting us this week. Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to new episodes ad-free and a whole week early.

Our search for a quantum theory of gravity is aided by a unique and perplexing feature of the classical theory: General Relativity already knows" about its own quantum states (the entropy of a black hole), and about those of all matter (via the covariant entropy bound). The results we are able to extract from classical gravity are inherently nonperturbative and increasingly sophisticated. Recent breakthroughs include a derivation of the entropy of Hawking radiation, a computation of the exact integer number of states of some black holes, and the construction of gravitational holograms in our universe using techniques from single-shot quantum communication protocols.

What is fire? How do gravitational waves ripple through space-time? Neil deGrasse Tyson and comedian Harrison Greenbaum answer grab bag questions about why supernovae form black holes, photons, the singularity, and more!NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/cosmic-queries-the-big-stretch/Thanks to our Patrons Tina Bartenfelder, scott white, Camelia Prodan, Wendy Tilles, Hank Hill, Cody White, Richard Vermillion, Lawrence Wolfe, darina spasova, Pablo Montufar, Alia Druid, Karthik, Jelmer van der Wijk, Anne ROBERTZ, Quentin, Sebastian Mueller, Marta Polo, Chelsea Mcclelland, Ross Hardie, Micheal, and Kevin Danielson for supporting us this week. Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to new episodes ad-free and a whole week early.

Carlo Rovelli is a renowned theoretical physicist and author, best known for his work on loop quantum gravity, a leading candidate for a theory of quantum gravity. Carlo explores the intersection of physics and philosophy, delving into the nature of time, reality, and the fundamental structure of the universe. 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 New Substack! Follow my personal writings here: https://curtjaimungal.substack.com/p/well-technically LINKED MENTIONED: - Carlo Rovelli's first appearance on TOE: https://www.youtube.com/watch?v=r_fUPbBNmBw - Lee Smolin on TOE: https://www.youtube.com/watch?v=uOKOodQXjhc - Neil Turok on TOE: https://www.youtube.com/watch?v=ZUp9x44N3uE - Carlo Rovelli's books: https://amzn.to/3YaBCin - How we know that Einstein's General Relativity can't be quite right | Sabine Hossenfelder: https://www.youtube.com/watch?v=Ov98y_DCvRY - This is why physics is dying | Sabine Hossenfelder: https://www.youtube.com/watch?v=cBIvSGLkwJY - Carlo Rovelli explains Einstein's theory of relativity: https://www.youtube.com/shorts/LK_hW_t8IWU - String Theory or Loop Quantum Gravity? David Gross vs Carlo Rovelli: https://www.youtube.com/watch?v=AUyylR5RPZw TOE'S TOP LINKS: - Support TOE on Patreon: https://patreon.com/curtjaimungal (ad-free audio episodes!) - Listen to TOE on Spotify: http://tinyurl.com/TOESpotify - Become a YouTube Member: https://tinyurl.com/TOEmember - Join TOE's Newsletter 'TOEmail' at https://www.curtjaimungal.org TIMESTAMPS: 00:00 - Intro SPONSORS (please check them out to support TOE): - 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 - INDEED: Get your jobs more visibility at https://indeed.com/theories - HELLOFRESH: https://www.HelloFresh.com/freetheoriesofeverything - PLANET WILD: https://planetwild.com/r/theoriesofeverything/join or use my code EVERYTHING9. 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 #physics #sciencepodcast #theoreticalphysics #podcast #stringtheory Learn more about your ad choices. Visit megaphone.fm/adchoices

Nassim Haramein, a veteran physicist working on one of the most complex and difficult problems in physics, describes his insights into our holographic universe, consciousness, and zero-point energy. He discusses fundamental principles of spacetime and the groundbreaking discovery of zero point energy, revealing the profound implications of these concepts for humanity. Nassim explores the nature of gravity, proposing that understanding and potentially controlling it could revolutionize our technological capabilities.  He explains how all information can be contained within a single proton, highlighting the remarkable complexity of our universe. He discusses the potential to tap into the field of universal knowledge, shedding light on how this access could enhance our understanding of existence. Nassim reflects on his own journey of questioning reality, sharing the pivotal moment that transformed his perspective and the courage it took to speak out about his findings. Sponsors: Try AG1 and get a FREE 1-year supply of VitaminD3K2 AND 5 free AG1 Travel Packs with your first purchase at https://drinkAG1.com/knowthyself Sleep deep and be happy with BiOptimizers' Magnesium, use code KNOWTHYSELF for 10% off https://bioptimizers.com/knowthyself André's Book Recommendations: https://www.knowthyself.one/books ___________ 0:00 Intro  2:05 His Mission: Unifying Physics & Transforming Society 3:32 Defining a Holographic Universe  5:41 Spacetime & The Discovery of Zero Point Energy 15:02 The Implication of This Work 18:00 Understanding & Controlling Gravity  24:00 The Biology of Our Interconnected Nature 33:19 BiOptimizers' Magnesium: Save 10% 36:50 The Myth of “Empty Space” 41:02 How All Information Fits in a Proton 50:35 Tapping Into the Field & Accessing the Knowledge of the Universe 1:05:18 Zero Point Energy Was Hidden from the Public 1:10:38 Try AG1 and Save Today 1:11:58 'Free Energy' Devices & Why They're Hidden 1:18:34 Studying The Nature of Consciousness in Physics 1:29:13 Can There Be A Unified Theory of Everything? 1:36:31 Growing Up, Questioning Reality 1:42:00 The Pivotal Realization that Transformed Him  1:48:32 Finding the Courage to Speak Out About This 1:53:36 “It's Bad Science”: Jumping to Conclusions in Quantum Physics 2:03:13 Local Realism: If a Tree Falls in the Forest… Does it Make a Sound? 2:06:22 When Science & Spirituality Merge 2:10:24 How We See Ourselves Will Change 2:14:43 The Missing Piece: Getting the Resources to Study This 2:21:47 Space Memory & Changing Our Understanding of Time 2:25:48 Possibility of Multiverses & Nested Realities 2:29:10 The Power of Intuition & Integrating Science/ Spirit 2:35:54 Future of Artificial Intelligence & Quantum Computing 2:48:38 Take A Closer Look & Get Involved 2:58:30 Get Connected to Nassim's Work 3:01:26 Conclusion ___________ Nassim Haramein is a Swiss born, 35-year veteran physicist working on one of the most complex and difficult problems in physics — Unification Theory (the unification of General Relativity and Quantum Mechanics). Haramein has researched fields of physics, mathematics, geometry, cosmology, quantum mechanics, biology, as well as cultural anthropology and archeology. These studies led to a groundbreaking theory published in scientific papers, and subsequent numerous patented inventions. Nassim's Episode: https://www.nassimharamein.com International Space Federation: https://spacefed.com Advanced Resonance Kinetics: https://www.arkcrystals.com Instagram: https://www.instagram.com/nassim.haramein/ ___________ Know Thyself Instagram: https://www.instagram.com/knowthyself/ Website: https://www.knowthyself.one Clips Channel: https://www.youtube.com/channel/UCJ4wglCWTJeWQC0exBalgKg Listen to all episodes on Audio:  Spotify: https://open.spotify.com/show/4FSiemtvZrWesGtO2MqTZ4?si=d389c8dee8fa4026 Apple: https://podcasts.apple.com/us/podcast/know-thyself/id1633725927 André Duqum Instagram: https://www.instagram.com/andreduqum/

Peter Woit is a theoretical physicist and mathematician, currently a Senior Lecturer in the Department of Mathematics at Columbia University. Peter is known for his work in quantum field theory and representation theory, particularly for contributions to the understanding of gauge theories. In addition to his academic work, Woit is the author of "Not Even Wrong: The Failure of String Theory and the Search for Unity in Physical Law," where he critically examines string theory while advocating for alternative approaches in the quest for a unified physical theory. Become a YouTube Member Here: https://www.youtube.com/channel/UCdWIQh9DGG6uhJk8eyIFl1w/join Patreon: https://patreon.com/curtjaimungal (early access to ad-free audio episodes!) Join TOEmail at https://www.curtjaimungal.org Links: ⁠- Peter Woit's first appearance on TOE: https://www.youtube.com/watch?v=9z3JYb_g2Qs - ⁠Peter Woit's book on Quantum Theory and Representations: https://www.amazon.com/Quantum-Theory-Groups-Representations-Introduction/dp/3319646109 - Peter Woit's Papers - https://inspirehep.net/literature?sort=mostrecent&size=25&page=1&q=a%20P.Woit.1 - Peter Woit's Blog - https://www.math.columbia.edu/~woit/wordpress/ - Peter Woit's book “Not Even Wrong”: https://amzn.to/3X8c1pS Timestamps: 00:00 - Introduction 01:31 - Overview of Unification in Physics and the Standard Model 05:11 - Historical Development of the Standard Model and its Success 07:00 - Introduction to General Relativity and its Challenges 09:32 - Unanswered Questions in the Standard Model (SU1, SU2, SU3) 13:12 - Technical Issues in Quantum Field Theory and General Relativity 17:24 - The Rise of Grand Unified Theories (GUTs) 21:07 - Challenges and Failures of GUTs (Proton Decay) 25:43 - Abandonment of GUTs and Introduction of Supersymmetry 26:45 - Basics of Supersymmetry and Its Predictions 31:28 - Failure of Supersymmetry (No Evidence for Superpartners) 32:08 - Supergravity, Kaluza-Klein Theories, and Extra Dimensions 35:52 - String Theory and the Unification Paradigm in the 1980s 39:00 - Experimental Failures and the Lack of Evidence for String Theory 41:00 - Ongoing Pursuit of Failed Theories and Resistance to New Ideas 47:09 - The Shift in Attitudes Towards Unification Efforts in Physics 48:13 - Introduction to Peter Woit's New Ideas on Unification 52:32 - The Role of Four-Dimensional Geometry and Spinors in Unification 58:11 - Wick Rotation and Differences Between Euclidean and Minkowski Space-Time 1:03:05 - Technical Challenges in Wick Rotation and Quantum Field Theory 1:09:01 - Unique Aspects of Spinors in Euclidean vs. Minkowski Space-Time 1:14:38 - The Dirac Operator and its Role in Space-Time Symmetry 1:18:02 - Relation to Supersymmetry and the Right-Handed Nature of Space-Time 1:22:04 - Connection to Gravity and Loop Quantum Gravity (Ashtakar Variables) 1:23:04 - Outro / Support TOE Support TOE: - Patreon: https://patreon.com/curtjaimungal (early access to ad-free audio episodes!) - Crypto: https://tinyurl.com/cryptoTOE - PayPal: https://tinyurl.com/paypalTOE - TOE Merch: https://tinyurl.com/TOEmerch Follow TOE: - NEW Get my 'Top 10 TOEs' PDF + Weekly Personal Updates: https://www.curtjaimungal.org - Instagram: https://www.instagram.com/theoriesofeverythingpod - TikTok: https://www.tiktok.com/@theoriesofeverything_ - 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 Join this channel to get access to perks: https://www.youtube.com/channel/UCdWIQh9DGG6uhJk8eyIFl1w/join #science #physics #stringtheory Learn more about your ad choices. Visit megaphone.fm/adchoices

Eric Weinstein is a mathematician, economist, science policy expert and a frequent public speaker on a variety of subjects within the sciences. Dr Weinstein was formerly a co-founder of the Sloan Sponsored Science and Engineering Workforce Project at Harvard and the National Bureau of Economic Research, a co-founder and principal of the Natron Group in Manhattan as well as a visiting research fellow at Oxford University in the Mathematical Institute. Since completing a PhD dissertation in the Mathematics Department at Harvard in 1992, he has held research positions in Mathematics, Physics, and Economics departments (at MIT, Hebrew University, and Harvard respectively). He delivered the Special Simonyi Lectures at Oxford University in 2013 putting forth a theory he termed “Geometric Unity” to unify the twin geometries (Riemannian and Ehresmannian) thought to ground the two most fundamental physical theories (General Relativity and the so-called Standard Model of particle theory, respectively). He has been asked to address the National Academy of Sciences on five occasions on the future of scientific and academic research at elite institutions within the United States.

This is an intuitive companion episode to the previous episode—Beyond Separation: The Zero-Point Field. If you haven't yet listened to that episode, I recommend listening to it first before diving into this one.ResourcesQuantic Field Impact to Space-TimeDisclaimer: This podcast is intended for entertainment and informational purposes only and does not substitute individual psychological advice.

We are used to think about the universe as a structure which started with a Big Bang and then expanded. Sir Roger Penrose, who received the 2020 Nobel Prize in Physics, has developed an alternative theory of the universe based on Einstein's Theory of General Relativity which is called "Conformal Cyclic Cosmology". In this new model we don't have one single Big Bang, but an iteration of infinite cycles (or aeons) of expansion and cooling, each beginning with a “big bang” and ending in a “big crunch”. Science Journalist Jens Degett interviews Professor Niels Obers, Director of the Nordic Institute for Theoretical Physics (NORDITA) and professor at the Niels Bohr Institute in Copenhagen, on Roger Penrose's theory and how much evidence is needed in order to change the general view of a central paradigm which is written in our school textbooks. What if Penrose is right? What consequences or perspectives will it have for us?

Bob covers John 1: 6-13 in his Bible commentary series. He likens the Arminian vs. Calvinist divide to General Relativity vs. quantum theory in physics, where both approaches are correct in their realm but--in their current versions--are incompatible.Mentioned in the Episode and Other Links of Interest:The previous episode in this series, i.e. BMS 305, Installment 2, Jesus as Logos.The BMS episode with Steve Patterson, covering mind-body dualism.RC Sproul on the TULIP of Calvinism. Leighton Flowers' Provisionism.RC Sproul on John the Baptist as the last Old Testament prophet.Help support the Bob Murphy Show.

Continuing our series on General Relativity, we discuss the derivation of the Schwarzschild metric as a vacuum solution to Einstein's Field Equations, and analyse the physical meaning of this solution, including the properties of the singularity, event horizon, and effects of time dilation and length compression. We then consider how solutions like the Schwarzschild metric yield testable predictions such as gravitational lensing and graviational redshift, which serve as important evidence in support of General Relativity. We conclude with a discussion about some of the more exotic aspects of black holes, including Hawking radiation, the no hair theorem, and the black hole information loss paradox. Recommended pre-listening is Episode 136: Introduction to General Relativity. If you enjoyed the podcast please consider supporting the show by making a PayPal donation or becoming a Patreon supporter. https://www.patreon.com/jamesfodor https://www.paypal.me/ScienceofEverything

Our universe appears to be “flat” — like a sheet of paper stretching to infinity. If so, that would mean it’s finely balanced — a sort of “just right.” Albert Einstein’s theory of gravity, known as General Relativity, allows the universe to assume one of three basic shapes. One shape is “closed” — like a sphere. In such a universe, two lights beamed out parallel to each other eventually would circle all the way around to their starting point. Another possible shape is “open” — curved like a saddle or a really big Pringles chip. The light beams in such a universe would move away from each other for all time. Finally, there’s a “flat” universe. Two light beams would remain parallel to each other forever — never spreading apart or coming together. The actual geometry is dictated by the density of the universe — how much matter is packed into its space. In a closed universe, there’s enough matter for its gravity to cause the universe to collapse. An open universe would expand forever. And a flat universe would be balanced — neither collapsing nor expanding without end. So far, the evidence supports a flat universe, although the matter isn’t completely settled. Not surprisingly, it’s all pretty complicated. The flat universe is flat in three dimensions — after all, we see galaxies in every direction. To a cosmologist, it all makes sense — a “flat” universe that’s the same every way we look at it. Script by Damond Benningfield

James Tytko asked Toby Wiseman, professor of theoretical physics at Imperial College London, to answer this question from listener Daniel... Like this podcast? Please help us by supporting the Naked Scientists

Summary**Tensor Poster - If you are interested in the Breaking Math Tensor Poster on the mathematics of General Relativity, email us at BreakingMathPodcast@gmail.comIn this episode, Gabriel Hesch and Autumn Fanoff interview Steve Nadis, the author of the book 'The Gravity of Math.' They discuss the mathematics of gravity, including the work of Isaac Newton and Albert Einstein, gravitational waves, black holes, and recent developments in the field. Nadis shares his collaboration with Shing-Tung Yau and their journey in writing the book. They also talk about their shared experience at Hampshire College and the importance of independent thinking in education. In this conversation, Steve Nadis discusses the mathematical foundations of general relativity and the contributions of mathematicians to the theory. He explains how Einstein was introduced to the concept of gravity by Bernhard Riemann and learned about tensor calculus from Gregorio Ricci and Tullio Levi-Civita. Nadis also explores Einstein's discovery of the equivalence principle and his realization that a theory of gravity would require accelerated motion. He describes the development of the equations of general relativity and their significance in understanding the curvature of spacetime. Nadis highlights the ongoing research in general relativity, including the detection of gravitational waves and the exploration of higher dimensions and black holes. He also discusses the contributions of mathematician Emmy Noether to the conservation laws in physics. Finally, Nadis explains Einstein's cosmological constant and its connection to dark energy.Chapters00:00 Introduction and Book Overview08:09 Collaboration and Writing Process25:48 Interest in Black Holes and Recent Developments35:30 The Mathematical Foundations of General Relativity44:55 The Curvature of Spacetime and the Equations of General Relativity56:06 Recent Discoveries in General Relativity01:06:46 Emmy Noether's Contributions to Conservation Laws01:13:48 Einstein's Cosmological Constant and Dark Energy

Tim Palmer joins Curt Jaimungal to discuss the progress and persistent challenges in fundamental physics, touching on topics such as the successes of the Standard Model, the unresolved issues of quantum mechanics and general relativity, and the potential implications of quantum entanglement and non-locality for our understanding of the universe. Please consider signing up for TOEmail at https://www.curtjaimungal.org  Support TOE: - Patreon: https://patreon.com/curtjaimungal (early access to ad-free audio episodes!) - Crypto: https://tinyurl.com/cryptoTOE - PayPal: https://tinyurl.com/paypalTOE - TOE Merch: https://tinyurl.com/TOEmerch  Follow TOE: - *NEW* Get my 'Top 10 TOEs' PDF + Weekly Personal Updates: https://www.curtjaimungal.org - Instagram: https://www.instagram.com/theoriesofeverythingpod - TikTok: https://www.tiktok.com/@theoriesofeverything_ - 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  

Sean Carroll is a theoretical physicist, author, and host of Mindscape podcast. Please support this podcast by checking out our sponsors: - HiddenLayer: https://hiddenlayer.com/lex - Cloaked: https://cloaked.com/lex and use code LexPod to get 25% off - Notion: https://notion.com/lex - Shopify: https://shopify.com/lex to get $1 per month trial - NetSuite: http://netsuite.com/lex to get free product tour Transcript: https://lexfridman.com/sean-carroll-3-transcript EPISODE LINKS: Sean's Website: https://preposterousuniverse.com Mindscape Podcast: https://www.preposterousuniverse.com/podcast/ Sean's YouTube: https://youtube.com/@seancarroll Sean's Patreon: https://www.patreon.com/seanmcarroll Sean's Twitter: https://twitter.com/seanmcarroll Sean's Instagram: https://instagram.com/seanmcarroll Sean's Papers: https://scholar.google.com/citations?user=Lfifrv8AAAAJ Sean's Books: https://amzn.to/3W7yT9N PODCAST INFO: Podcast website: https://lexfridman.com/podcast Apple Podcasts: https://apple.co/2lwqZIr Spotify: https://spoti.fi/2nEwCF8 RSS: https://lexfridman.com/feed/podcast/ YouTube Full Episodes: https://youtube.com/lexfridman YouTube Clips: https://youtube.com/lexclips SUPPORT & CONNECT: - Check out the sponsors above, it's the best way to support this podcast - Support on Patreon: https://www.patreon.com/lexfridman - Twitter: https://twitter.com/lexfridman - Instagram: https://www.instagram.com/lexfridman - LinkedIn: https://www.linkedin.com/in/lexfridman - Facebook: https://www.facebook.com/lexfridman - Medium: https://medium.com/@lexfridman OUTLINE: Here's the timestamps for the episode. On some podcast players you should be able to click the timestamp to jump to that time. (00:00) - Introduction (11:03) - General relativity (23:22) - Black holes (28:11) - Hawking radiation (32:19) - Aliens (41:15) - Holographic principle (1:05:38) - Dark energy (1:11:38) - Dark matter (1:20:34) - Quantum mechanics (1:41:56) - Simulation (1:44:18) - AGI (1:58:42) - Complexity (2:11:25) - Consciousness (2:20:32) - Naturalism (2:24:49) - Limits of science (2:29:34) - Mindscape podcast (2:39:29) - Einstein

With Dr. Leonard Susskind (Stanford University)Black holes, the collapsed remnants of the largest stars, provide a remarkable laboratory where the frontier concepts of our understanding of nature are tested at their extreme limits. For more than two decades, Professor Susskind and a Dutch colleague had a running battle with Stephen Hawking about the implications of black hole theory for our understanding of reality — a battle that he has described in his well-reviewed book The Black Hole Wars. In this talk Dr. Susskind tells the story of these wars and explains the ideas that underlie the conflict. What's at stake is nothing less than our understanding of space, time, matter and information!Recorded: October 1, 2008        Although this was taped some years ago, this was the most popular talk in the 24-year history of our series.  So we wanted to make it available as a podcast, so new audiences could also hear it.

Are black holes places or objects? Neil deGrasse Tyson and cohosts Chuck Nice and Gary O'Reilly answer grab-bag questions about distorting spacetime, Olbers' Paradox, singularities, the shape of the universe, and more with astrophysicist Charles Liu. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/cosmic-queries-black-hole-time-cloak-with-charles-liu/Thanks to our Patrons Logan Kent, James in 3d, Renee Skrip, Maarten Spruijt, Alan Domonoske, Liam Predergast, sparkman, Cecil J Taylor, abhinav yadav, and Markus Gustafsson for supporting us this week.

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         

A Non-technical Talk by Dr. Jessica Lu (University of California, Berkeley) on March 13, 2024The population of black holes, objects left over from dead stars,  is almost entirely unexplored. Only about two dozen black holes are confidently known in our Galaxy. As a result, some of the most basic properties of black holes remain unknown, including the true number of black holes in the Galaxy, their masses and sizes, and how the black holes were formed.  Dr. Lu discusses how she and other astronomers are using "gravitational lensing" -- something predicted by Einstein's work -- to open a new window onto black holes, and how the first free-floating black holes are now being discovered.  She explains, in everyday language, why astronomers expect that the number of known black holes will increase by a factor of 100 over the next decade.

Einstein's theory of general relativity has been our best understanding of gravity for over a century, withstanding a variety of experimental challenges of ever-increasing precision. But we have to be open to the possibility that general relativity -- even at the classical level, aside from any questions of quantum gravity -- isn't the right theory of gravity. Such speculation is motivated by cosmology, where we have a good model of the universe but one with a number of loose ends. Claudia de Rham has been a leader in exploring how gravity could be modified in cosmologically interesting ways, and we discuss the current state of the art as well as future prospects.Blog post with transcript: https://www.preposterousuniverse.com/podcast/2024/04/01/271-claudia-de-rham-on-modifying-general-relativity/Support Mindscape on Patreon.Claudia de Rham received her Ph.D. in physics from the University of Cambridge. She is currently a professor of physics and deputy department head at Imperial College, London. She is a Simons Foundation Investigator, winner of the Blavatnik Award, and a member of the American Academy of Arts and Sciences. Her new book is The Beauty of Falling: A Life in Pursuit of Gravity.Imperial College web pageWikipediaPublications at InspireSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Irwin Shapiro is a remarkable human being by almost any standard. Following his education in physics at Cornell and Harvard, he had a job at MIT's Lincoln Laboratory working on various problems in planetary dynamics, and radar ranging, when he went to a lecture and realized that a completely new phenomenon could occur in General Relativity that no one had proposed in the half-century since Einstein first proposed it. For objects traveling near a massive object like the Sun, the travel time to go from one point to another would be slightly longer than it would be if one simply divided the distance traveled by the speed of light. One might think this is simply due to the fact that light takes a curved trajectory near a massive object, rather than traveling in a straight line. But as Shapiro showed, there is an additional time delay, due to the fact that clocks tick somewhat slower in a gravitational field than they would otherwise. This effect, now known as the Shapiro Effect has become known as the 4th test of General Relativity, a test the theory passed when Shapiro and collaborators used the Haystack Observatory to carefully measure reception times for radar signal that passed near the sun. Irwin went from that triumph to Chair the Department of Earth and Planetary Sciences at MIT, and from there to Harvard to lead the Harvard Smithsonian Observatory. He remains at Harvard, where at 94 years old, as Timkin University Professor, he still teachers classes, is doing research in biology, and plays tennis several times a week!Besides all of this, Irwin is one of the most lovely and gentle scientists I have known in my career, which continued after my stint at Harvard largely because of encouragement he gave to me at a very difficult time for me. As a result, it was a pure delight to reconnect with him after many years, and have a conversation about his long career, the evolution of science in the 60 odd years that he has been doing it, and about life in general. I hope you enjoy it, and find it as intellectually and emotionally stimulating as I did. As always, an ad-free video version of this podcast is also available to paid Critical Mass subscribers. Your subscriptions support the non-profit Origins Project Foundation, which produces the podcast. The audio version is available free on the Critical Mass site and on all podcast sites, and the video version will also be available on the Origins Project Youtube channel as well. Get full access to Critical Mass at lawrencekrauss.substack.com/subscribe

If God is the Creator of light, then it stands to reason that He is greater than light. And if He is greater than light, then His experience of time is different than ours, since time is relative to the speed of light. In this episode, Justin Hibbard continues the series on the Nature of God by exploring the metaphysics of God and how this affects God being personal to us. Subscribe to Why Catholic? wherever you get your podcasts.Check out the Why Catholic Etsy shop (all proceeds support this podcast).Become a free subscriber or a patron of Why Catholic? and get the next episode and a discount code to the Why Catholic Etsy shop in your email inbox.Follow Why Catholic on Instagram.Subscribe to Why Catholic on YouTubeSHOW NOTES:* Mere Christianity by C.S. Lewis (free PDF)* Why does time change when traveling close to the speed of light? A physicist explains. - The Conversation* Interstellar* JILA Atomic Clocks Measure Einstein's General Relativity at Millimeter Scale* Do we really travel through time with the speed of light? - Backreaction* The Science of the 10 Plagues* Fr. Ehli: The Perfect Timing of The Incarnation | Ep. 16* Myth Became Fact by C.S. Lewis (free PDF) Get full access to Why Catholic? at whycatholic.substack.com/subscribe

Daniel and Jorge talk about why we think Einstein was wrong about the nature of the Universe.See omnystudio.com/listener for privacy information.

In this episode Jason and Josh talk with Tom Murphy, author of the blog Do The Math, about the inherently unsustainable nature of modernity and the delusion of infinite growth on a finite planet. As part of this they discuss his early retirement from academia as a successful astrophysicist at the University of California, his growing interest in indigenous wisdom and lifeways, the long view of earth history and where we're going, and his realization that the end of modernity doesn't mean the end of humanity Tom's university bio: I am a Professor in the physics department at UCSD, and the Associate Director of CASS, the Center for Astrophysics and Space Sciences. From 2003–2020, I led the APOLLO project as an ultra-precise test of General Relativity using the technique of lunar laser ranging. My interests are transitioning to quantitative assessment of the challenges associated with long-term human success on a finite planet. In November 2021, I was one of five founders of the Planetary Limits Academic Network, aiming to connect scholars from all disciplines who are concerned about the deep systemic challenges humanity faces this century. Our "launch" paper gives the background, titled Modernity is Incompatible with Planetary Limits: Developing a PLAN for the Future. In 2014, I started a company (Aircraft Avoidance Systems) to provide safety devices for observatories using lasers for scientific research. Tom's blog, Do the Math: https://dothemath.ucsd.edu/

Learn how the geometry of space defies our intuition, and why it gave Einstein so much anxiety.Our new merch is available here: https://www.shalmawegsman.com/why-this-universeFor ask-us-anything segments and other exclusives, join us for just $3 a month on Patreon: https://patreon.com/whythisuniverseSupport the show

Einstein's theory of general relativity showed that different observers experience time differently! This theory has real-world implications. No matter how we each experience time, the amount of time we have is limited. Therefore, be thankful and make the most of it. 

What would Isaac Newton think of today's science? Neil deGrasse Tyson and comedian Chuck Nice answer a cosmic cauldron of Cosmic Queries. From dark matter, to what aliens look like, the size of the universe, we answer a multiverse of questions. This episode originally aired July 27, 2020.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/cosmic-queries-cosmic-cauldron-re-release/Thanks to our Patrons Saawan Patel, Samantha Quinn, Anatoly Borodin, Brice Purdy, Forrest Shepard, Sarah Caroline Bell, Genesis Djafri, and Braden Thomas for supporting us this week.Photo Credit: X-ray: NASA/CXC/SAO; Optical: NASA/STScI; Infrared: NASA-JPL-Caltech

Carlo Rovelli is well known as a popularizer of science. His short book, Seven Brief Lessons on Physics, was an international bestseller. I have known Carlo as a physicist ever since he used to visit my Physics Department colleague, Lee Smolin, at Yale, when I was a Professor there. Carlo and Lee were part of a small group of physicists pioneering an idea called ‘Loop Quantum Gravity' as a way to try and unify General Relativity and Quantum Mechanics. Less well known among the public than its chief competitor, String Theory, and also less popular among physicists as a whole, Loop Quantum Gravity is nevertheless an equally serious attempt to address the vexing paradoxes associated with of quantizing General Relativity.Black Holes are the place in physics where the various problems of quantum gravity become manifest. If Stephen Hawking was correct, and black holes do completely evaporate through quantum processes that result in the emission of thermal radiation, then it appears that the information about what fell into the black hole in the first place will be forever lost. But this violates a central feature of quantum mechanics, which preserves information. At the same time, the final state of classical black hole collapse involves a singularity of infinite density. Most physicists expect this singularity to be removed in a quantum theory of black holes. Rovelli argues that near the singularity of a black hole quantum processes can change a black hole to be a ‘white hole', the time reversed version of a black hole. While anything that falls into a black hole stays there, everything inside a white hole eventually reappears. If Carlo's ideas were correct, they could go a long way toward potentially resolving black hole paradoxes. It is a big ‘If” however, and I remain skeptical. Nevertheless I wanted to discuss these ideas with Carlo on this podcast for a variety of reasons. First, any such discussion will illuminate a lot about the physics of black holes. Secondly, I think it is useful for laypeople to listen to physicists debate and discuss ideas at the forefront, presenting challenges to each other, being willing to openly question, and doing all of this with a sense of mutual respect. At the same time, because I share Carlo's great interest in both popularizing science, as well as connecting science and culture, I was extremely interested in discussing his motivations and thoughts about these important areas, and I was not disappointed. I hope listeners will find our discussions about science, literature, and politics equally enlightening. As always, an ad-free video version of this podcast is also available to paid Critical Mass subscribers. Your subscriptions support the non-profit Origins Project Foundation, which produces the podcast. The audio version is available free on the Critical Mass site and on all podcast sites, and the video version will also be available on the Origins Project Youtube channel as well. Get full access to Critical Mass at lawrencekrauss.substack.com/subscribe

Erik Verlinde is Professor of Physics in the Faculty of Science at the University of Amsterdam, where he specializes in quantum gravity and string theory, black holes, and cosmology. In this episode, Erik and Robinson discuss his studies with the Nobel laureate Gerard 't Hooft, black holes, the holographic principle, string theory, entropic gravity, and dark matter. OUTLINE 00:00 In This Episode… 00:51 Introduction 02:16 Studying with Gerard ‘t Hooft 13:33 How Do Black Holes Connect Quantum Theory and General Relativity? 20:57 Why Are Black Holes the Most Symmetric Objects in the Universe 24:10 How Do You Measure a Black Hole's Entropy? 30:32 What Is The Holographic Principle in Physics? 44:17 What is String Theory and What Does It Teach Us About Black Holes? 01:04:49 What Is Entropic Gravity?  01:24:09 What's the Connection Between String Theory and Quantum Mechanics? 01:29:33 Entropic Gravity and General Relativity 01:40:32 Does Entropic Gravity Explain Dark Matter? 01:47:50 The Present and Future of Emergent Gravity 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

On today's episode the guys get into a discussion about General Relativity, which is physicist Albert Einstein's understanding of how gravity affects the fabric of space-time. Plus we get into the missing F-35 plane and the guy who found it, the Kelce brothers and Taylor Swift, Donald Trump Jr., The Barstool Writer Cup and much more.You can find every episode of this show on Apple Podcasts, Spotify or YouTube. Prime Members can listen ad-free on Amazon Music. For more, visit barstool.link/macrodosing

September 21, 1922. After photographing a total solar eclipse, astronomers prove that space is curved, confirming Albert Einstein's groundbreaking theory of general relativity.Support the show! Join Into History for ad-free listening and more.History Daily is a co-production of Airship and Noiser.Go to HistoryDaily.com for more history, daily.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Andrew Strominger is Gwill E. York Professor of Physics and Director of the Center for the Fundamental Laws of Nature at Harvard University, where he works on some of the deepest questions in physics, including black holes and the unification of quantum field theory and general relativity in the form of string theory. In this episode, Robinson and Andy discuss the basics of string theory, including its unifying role in physics, its application to outstanding and once-intractable problems of black holes, and the conceptual difficulties of thinking about higher-dimensional spaces. OUTLINE 00:00 In This Episode… 00:32 Introduction 05:03 Andy's Entry into String Theory 20:49 The Irreconcilable Clash between General Relativity and Quantum Field Theory 47:02 String Theory, Fine-Tuning, and the Anthropic Principle 59:20 The Basics of String Theory 01:12:50 String Theory and the Reductionist Program of Physics 01:27:25 When Will We Observe the Strings of String Theory? 01:43:45 How Many Dimensions are There in String Theory? 02:12:50 Aesthetics in String Theory 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

*Welcome Dr. Dennis: This week Fred Williams and Doug McBurney interview physicist Phillip Dennis, who does research in General Relativity and Gravitation, Cosmology, and Quantum Field Theory, among others. His projects include providing algorithms for the Hubble Space Telescope, tracking algorithms, and other mathematical algorithms, he has three patents and has been recognized with awards from NASA, TRW, and Litton.   *Presentism: says that just because special relativity presents the appearance that one cannot assign an objective time order to distantly occurring events, that does not mean there is no "actual now". There is an actual now, and we're all in it... right now!   *Phil's Cosmology Model: Dr. Dennis gives us his thoughts on quantum field theory, the wave-particle duality, distant starlight in a 6000-year-old universe, and an introduction to relativistic quantum theory for creationists.   *Links to Dr. Dennis' Papers: (at least to the ones mentioned on the show today). Read Dr. Dennis' Machian Paper on aspects of the nature of light, his Relativistic Cosmology, and his groundbreaking 1998 paper on Probability & Quantum Mechanics.  

Tonight we explore the strange reality of Einstein's General Theory of Relativity and what it means for 3 dimensional beings born into a 4 dimensional Universe. It predicts our birth from a singularity in an expanding Universe, the contraction of space at the speed of light, and both black holes and the infinite time dilation at their horizon. It's bizarre that space truly compresses and time actually slows down deep inside gravitational wells and near the speed of light. We literally observe supernovae billions of light years away exploding at half their normal speed. So let's find out about the history and basics of relativity.   ▸ Want to leave a tip or connect?:    Video credits: Carrol and Ostlie (textbook I used): https://amzn.to/3QtiABm TNG Simulations https://www.tng-project.org/media/ NASA/STSci/ESA Davis and Lineweaver (2003) https://arxiv.org/abs/astro-ph/0310808 Nolan, C. (2014). Interstellar. Paramount Pictures. The Eagle Simulation, Durham University https://youtu.be/Fim6dWJhxz4 Doppler Shifts, Prof. Richard Pogge, The Ohio State University https://youtu.be/xCTUgpwuP0I  2 Hour Jupiter time lapse with Io transit, https://youtu.be/EBBhvY8ZRwE Relativity 110d: Cosmology - FLRW Geodesics, Cosmological Redshift, Horizons, Comoving Coordinates, https://youtu.be/OxkY4Wqdpp8 Relativity 103a: Galilean Relativity - Spacetime Diagrams, https://youtu.be/powCBsDOa8U How Fast Is It - 03 - Special Relativity (4K), https://youtu.be/IyxX8LAvkdQ Dr. David Bradstreet (Eastern University), Ole Roemer and the Speed of Light, https://youtu.be/XNJw0B1o8cQ Mythbusters, Soccer ball shot from a truck Time Stamps: 0:00 Relativity and the expanding Universe (intro) 5:54 Galileo and Roemer discover light isn't infinitely fast (1600's) 19:55 The mystery of the constant speed of electromagnetic field waves 32:17 Galileo discovered relativity 50:26 Einstein discovers Special Relativity 1:11:39 Time dilation and space contraction 1:33:08 Galaxy redshifts and expansion 2:16:24 General Relativity (gravity now explained by relativity) 2:57:41 Light cones (future and past causality) 3:12:21 Relativity in Cosmology: discovery of expanding spacetime  #educational #letsfindout #ASMR #relaxing #space #science

An introduction to the conceptual and mathematical framework of Einstein's General Theory of Relativity. We begin by considering the key insight of gravity as a geometric phenomenon, and how the curvature of spacetime by matter explains the equality of inertial and gravitational mass. We then discuss the mathematics of general relativity, including geodesics, differential manifolds, covariant derivatives, the metric tensor, Christoffel symbols, the Riemann curvature tensor, the Ricci tensor, and the energy-momentum tensor. The episode concludes with a derivation and explanation of the significance of Einstein's Field Equations. Recommended pre-listening is Episodes 114 and 115: Special Relativity 1 and 2.  If you enjoyed the podcast please consider supporting the show by making a PayPal donation or becoming a Patreon supporter. https://www.patreon.com/jamesfodor https://www.paypal.me/ScienceofEverything  

If you love big thoughts, this is the episode for you. We'll ponder what would happen if a fly flew into the window of a moving bus. Would it have to keep flying forward to avoid crashing into the back window? Or could it just hover inside the bus? Plus we'll unpack one of the most important ideas in science, the Theory of General Relativity. You'll learn how creative thinking helped Albert Einstein change the world and get a little creative yourself guessing an all-new Mystery Sound! This episode was sponsored by: Liquid I.V. (LiquidIV.com - Use code BRAINS at checkout to receive 20% off anything you order when you order.) Buy A Toyota (BuyAToyota.com - Explore Toyota SUVs.) *****Do you have your Smarty Pass yet?? Get yours today for just $4/month (or $36/year) and get bonus episodes every month, and ad-free versions of every episode of Brains On, Smash Boom Best, Moment of Um, and Forever Ago. Visit www.smartypass.org to get your Smarty Pass today!

Or wait... is it a special episode on General Relativity? Find out! Dr. Bryan Gillis takes us through some fascinating history on the discoveries and experiments that ultimately led to Einstein's Theory of Relativity. How did they measure the speed of light in like 18 dickety 2 or whatever? Impossible. Also why is faster than light travel equivalent to time travel? So much fun. Are you an expert in something and want to be on the show? Apply here! Please please pretty please support the show on patreon! You get ad free episodes, early episodes, and other bonus content!

What is the shape of spacetime? Neil deGrasse Tyson and comedian Chuck Nice discover the structure of the universe, spacetime geometry, and relativity with theoretical physicist at Princeton Gravity Initiative, Delilah Gates. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free.Thanks to our Patrons Anna Jeter, Logan Green, Kathy McConnell, Glen A. Axberg, and dan wres for supporting us this week.Photo Credit: