The Big Bang just doesn’t make much sense. We don’t have any real idea what was before (or rather ‘beyond’) it, but some of our best guesses involve quantum fluctuations and chance. While this makes intuitive sense, it leads to some statistical consequences #science #bigbang #quantum #boltzmannbrain …
“I like to say that physics is hard because physics is easy, by which I mean we actually think about physics as students.”
Up next, The Multiverse is real. Just not in the way you think it is. ► • The Multiverse is real. Just not in the wa…
Physics seems complicated, until you realize why it works so well, says physicist Sean Carroll, revealing the basis of the field’s greatest successes: Radical simplicity.
Carroll takes us from Newton’s clockwork universe to Laplace’s demon, to Einstein’s spacetime revolution, exploring the historical shockwaves each breakthrough caused. If you’ve wondered how stripping the world down to its simplest parts can reveal deeper truths, this is where that story begins.
00:00:00 Radical simplicity in physics.
00:00:55 Chapter 1: The physics of free will.
00:04:55 Laplace’s Demon.
00:06:27 The clockwork universe paradigm.
00:07:41 Determinism and compatibilism.
00:08:45 Chapter 2: The invention of spacetime.
00:17:30: Einstein’s general theory of relativity.
00:24:27 Chapter 3: The quantum revolution.
00:28:05 The 2 biggest ideas in physics.
00:32:27 Visualizing physics.
00:38:17 Quantum field theory.
00:46:51 The Higgs boson particle.
00:47:28 The standard model of particle physics.
00:52:53 The core theory of physics.
01:02:03 The measurement problem.
01:13:47 Chapter 4: The power of collective genius.
01:16:19 A timeline of the theories of physics.
Is math something humans invent—or something we discover? And why does it describe the universe so uncannily well?
In this episode of Uncommon Knowledge, Peter Robinson sits down with mathematicians David Berlinski, Sergiu Klainerman, and Stephen Meyer to explore one of the deepest mysteries in science and philosophy: the reality of mathematics.
From the simple certainty that 2 + 2 = 4 to the mind-bending mathematics behind black holes and quantum physics, the conversation asks why abstract numbers—created in the human mind—map so perfectly onto the physical world. Is mathematics purely logical, or does it point to a deeper structure of reality that isn’t material at all? Along the way, the panel explores beauty in science, the “unreasonable effectiveness” of math, and whether the concept of materialism can really explain the world we live in.
This wide-ranging discussion blends mathematics, physics, philosophy, and metaphysics into a fascinating conversation about truth, beauty, and the nature of reality itself.
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The opinions expressed are those of the authors and do not necessarily reflect the opinions of the Hoover Institution or Stanford University.
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Time is the one thing every human being experiences identically, or so we assume.
Physicist Jim Al-Khalili dismantles that assumption, explaining how velocity and gravity don’t just affect clocks but actually alter the rate at which time passes for the person experiencing it.
Preorder Jim Al-Khalili’s forthcoming book, On Time: The Physics That Makes the Universe, here: https://www.amazon.com/Time-Physics-T?tag=lifeboatfound-20…
About Jim Al-Khalili: Jim is a multiple award-winning science communicator renowned for his public engagement around the world through writing and broadcasting and a leading academic making fundamental contributions to theoretical physics, particularly in nuclear reaction theory, quantum effects in biology, open quantum systems and the foundations of quantum mechanics. Jim is a theoretical physicist at the University of Surrey where he holds a Distinguished Chair in physics as well as a university chair in the public engagement in science. He received his PhD in nuclear reaction theory in 1989 and has published widely in the field. His current interest is in open quantum systems and the application of quantum mechanics in biology.
About Jim Al-Khalili:
What do we mean with the ‘Big Bang’? Why are the properties of our universe so special? What is cosmological inflation? How can we test cosmological inflation and what do the latest observations tell us? Can we probe string theory using cosmology?
How did our universe come into existence? This basic and ancient question still remains one of the biggest mysteries in science. Ever since Einstein discovered that gravity can be understood as the stretching and bending of space and time, cosmology, which studies the properties, evolution and origin of the universe as a hole, became a proper and honest scientific subject, in which theoretical constructs can be confronted with (cosmological) observations.
What we have learned since then, in less than a century, about the origin and properties of our universe, is spectacular and at the same time mysterious. Our universe appears to be very special. In an attempt to explain these remarkable features a small group of theoretical cosmologists developed the paradigm of cosmological inflation in the eighties. What is cosmological inflation? An what do the latest observations tell us about this fascinating proposal in which all structures in our universe find their origin in small primordial quantum fluctuations? And what are the implications of cosmological inflation for conjectured theories of quantum gravity, such as string theory?
String theorist Jan Pieter van der Schaar argues that cosmology in general, and the cosmological paradigm of inflation in particular, is our best (and perhaps only) bet to probe and test the microscopic quantum description of space and time.
An Pieter van der Schaar is a string theorist by training, with a Ph.D. at the University of Groningen in 2000. After postdoctoral research stints at the University of Michigan, the Cern theory group, and Columbia University, he developed into a theoretical cosmologist with a particular interest to connect cosmological models to string theory and vice versa. Jan Pieter has been a member of the string theory and cosmology group at the Institute of Physics of the University of Amsterdam since 2006. Since 2013 he is the coordinator of the Delta Institute for Theoretical Physics and as of 2022 he is heading the ‘Building Blocks of Matter and Foundations of Space-time’ route as part of the Nationale Wetenschapsagenda.
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Some of the world’s leading physicists believe they have found startling new evidence showing the existence of universes other than our own. See more in Season 3, Episode 2, \.
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Ever wish you could travel backward in time and do things differently? Good news: the laws of physics seem to say traveling backward in time is the same as traveling forwards. So why do we seem to be stuck in this inexorable flow towards the future? It’s time to begin our journey towards really understanding time.
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https://mailchi.mp/1a6eb8f2717d/space… by Matt O’Dowd Written by Matt O’Dowd Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski Directed by: Andrew Kornhaber Assistant Producer: Setare Gholipour Executive Producers: Eric Brown & Andrew Kornhaber End Credits Music by J.R.S. Schattenberg: / @julesschattenberg Special Thanks to Our Patreon Producers Big Bang Supporters Sean Maddox Marty Yudkovitz Brodie Rao Scott Gray Ahmad Jodeh Radu Negulescu Alexander Tamas Morgan Hough Juan Benet Fabrice Eap Mark Rosenthal David Nicklas Quasar Supporters Justin Lloyd Christina Oegren Mark Heising Vinnie Falco Hypernova Supporters William Bryan L. Wayne Ausbrooks Nicholas Newlin Mark Matthew Bosko Justin Jermyn Jason Finn Антон Кочков Alec S-L Julian Tyacke John R. Slavik Mathew Danton Spivey Donal Botkin John Pollock Edmund Fokschaner Joseph Salomone Matthew O’Connor chuck zegar Jordan Young m0nk Hank S John Hofmann Timothy McCulloch Gamma Ray Burst Daniel Jennings Cameron Sampson Pratik Mukherjee Geoffrey Clarion Astronauticist Nate Darren Duncan Lily kawaii Russ Creech Jeremy Reed Max Bernard Bill Blair Eric Webster Steven Sartore DrJYou David Johnston J. King Michael Barton Christopher Barron James Ramsey Mr T Andrew Mann Jeremiah Johnson fieldsa eleanory Peter Mertz Kevin O’Connell Richard Deighton Isaac Suttell Devon Rosenthal Oliver Flanagan Dawn M Fink Bleys Goodson Darryl J Lyle Robert Walter Bruce B Ismael Montecel Andrew Richmond Simon Oliphant Mirik Gogri David Hughes Mark Daniel Cohen Brandon Lattin Yannick Weyns Nickolas Andrew Freeman Brian Blanchard Shane Calimlim Tybie Fitzhugh Robert Ilardi Astaurus Eric Kiebler Craig Stonaha Martin Skans Michael Conroy Graydon Goss Frederic Simon Greg Smith Sean Warniaha Tonyface John Robinson A G Kevin Lee Adrian Hatch Yurii Konovaliuk John Funai Cass Costello Geoffrey Short Bradley Jenkins Kyle Hofer Tim Stephani Luaan AlecZero Malte Ubl Nick Virtue Scott Gossett Martin J Lollar Dan Warren Patrick Sutton John Griffith Daniel Lyons DFaulk Kevin Warne Andreas Nautsch Brandon labonte Lucas Morgan.
Hosted by Matt O’Dowd.
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🚨 THE UNIVERSE NEVER FORGETS. NOT A SINGLE MOMENT. You burned a book. The words are gone. The pages are ash. But physics says every letter still exists — scattered across trillions of particles, encoded in the quantum state of reality. And it’s not just books. Every breath you’ve ever taken. Every word you’ve ever spoken. Every person you’ve ever lost. The information is still here. Right now. Permanently.
🔴 WHAT YOU’LL DISCOVER:
🔴 Why burning something doesn’t destroy its information.
🔴 How Stephen Hawking lost the biggest bet in physics history.
🔴 The black hole war that nearly broke quantum mechanics.
🔴 Why spacetime itself is made of information.
🔴 What this means about death — and why nothing truly disappears.
⚠️ WARNING: After this video, you will never look at destruction the same way again.
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physics, quantum mechanics, information paradox, black holes, Hawking radiation, holographic principle, entropy, universe, science, reality, quantum information, spacetime, Leonard Susskind, Stephen Hawking, ER EPR.