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See upcoming dates at: https://briancoxlive.co.uk/#tour
“Quantum mechanics and quantum entanglement are becoming very real. We’re beginning to be able to access this tremendously complicated configuration space to do useful things.”
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With a topic as seemingly complicated as quantum physics, where can you start if you want to build your understanding?
In just 22 minutes, physicist and professor Brian Cox unpacks the subatomic world, beginning with the theories as we understand them today.
0:00 The subatomic world
1:23 A shift in teaching quantum mechanics
2:48 Quantum mechanics vs. classic theory
6:07 The double slit experiment
11:31 Complex numbers
13:53 Sub-atomic vs. perceivable world
16:40 Quantum entanglement
Read the video transcript ► https://bigthink.com/series/the-big-think-interview/brian-cox-quantum-physics/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description
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About Brian Cox:
Brian Cox obtained a first class honors degree in physics from the University of Manchester in 1995 and in 1998 a Ph.D. in High Energy Particle Physics at the DESY laboratory in Hamburg. He is now Professor of Particle Physics at the University of Manchester, The Royal Society Professor for Public Engagement in Science and a Fellow of the Royal Society.
Brian is widely recognized as the foremost communicator for all things scientific, having presented a number of highly acclaimed science programs for the BBC watched by billions internationally including ‘Adventures in Space and Time’ (2021), ‘Universe’ (2021), ‘The Planets’ (2018), ‘Forces of Nature’ (2016), ‘Human Universe’ (2014), ‘Wonders of Life’ (2012), ‘Wonders of the Universe’ (2011) and ‘Wonders of the Solar System’ (2010).
As an author, Brian has also sold over a million books worldwide including ‘Black Holes’, ‘Universal: A Guide to the Cosmos’, ‘Quantum Universe’ and ‘Why Does E=mc2?’ with co-author Professor Jeffrey Forshaw. He has set several world records for his sell-out live tours, including his most recent tour Horizons which has taken in venues across the globe.
Source
If the quantum world,, reacts depending on who's watching, can we manipulate by purposely ignoring certain molecules? At certain times?
Pretending to understand or forcing to accept metaphorical parallels of things like coins flipping and probabilities with physical reality of matter is not helping simple people like me. That coin oversimplification creates a gap in understanding by forcing people to pretend to understand. Physiscists should remove that coin noise from their supposed explanation and try to use a more close to reality example. From one side you have an uncomprehensible physical phenomenon and from the other the silliest and most disconnected coin flip story. They don not much but help to pretend.
Big think is funded by oil tycoons and warprofiteers they contribute to misinformation on global warming and other kinds of misinformation
Maybe
"If you think you understand quantum mechanics you don't understand quantum mechanics." Richard Feynman, Nobel Laureate in Physics
Beautiful, no extra comments or emojis or anything likethat, its just beautiful
"Complex numbers are like little clocks"???
"So we've got a system, a state, and it's up, down, plus down, up let's say." ???
"But if it's up, down plus down, up…" ???
Is that the Contra code that gives you 30 extra lives? No attempt to explain what that meant at all.
Honestly this is just gibberish to anyone that doesn't already understand it. Just read a book. You'll never learn quantum mechanics from a youtube video. It's all dumbed down so much that's it becomes meaningless.
Quantum mechanics is NOT INCOMPLETE, instead:
Quantum mechanics is PARTIALLY CORRECT thanks to the Schrödinger self adjoint Hamiltonian Energy operator
H=-(hbar^2/2m)nabla^2 + V
Quantum mechanics is PARTIALLY INCORRECT due to the Schrödinger linear unitary evolution equation
partialpsi/partial t =–iH(psi)
In order to make H work properly the unitary evolution has to be replaced by a non-linear evolution equation equivalent to the quotient of the Neumann equation for H, with antipodal wave functions identified to each other.
A similar Neumann quotient can be defined for free photons in “empty” space. These two quotient Neumann systems are then made to interact resulting in a completely causal, continuous, not uncertain, wave collapse compliant and deterministic description of quantization, absorption and radiation of energy.
With cordial regards
Daniel Crespin
His nonsensical ideas match his nonsensical, grandma’s haircut
Why does this female keep showing up in my YoutTube ?
Maybe I'm strange, and this makes sense to me. Not in the classical sense I was taught in school, more in an intuitive sense. It always has, since the first time I heard of it.
LOL… come back in 10 years and they will have another explanation! In reality, they don’t have a clue because they use mathematics as though it’s infallible. In reality, mathematics was invented by humans to explain the world around them. Newtonian physics to explain gravity is the classic example. It’s close but fundamentally wrong.
I have a headache. I think I'll go take a nap
He is keanu reeves of physics
Complex numbers. 4+2i good enough?
MATH IS HARD , IT HURTS MY BRAIN
I propose that in U.F.T. ; Universe is transactional , QFT as accountant , Gravity as banker, QM as bookie . If we use a cd player , all of it's mechanisms , as well as the medium as metaphor, we start with the speakers sound ( selected , subjective history) and work our way backwards. It becomes apparent that QM requires an actuary to sync to GR in larger scales if Gravity is as banker but what is the formula for actuary (in this case) and what variables to use? A.I. is sycophant terrible because it's like.."That's a DAC ; Dude!" Yea ; I wish that the BIG Reality worked as smoothly as that. No wonder the others copped out and call it "SIMULATION" which it is not. Thank you though Brian for a truth.. Some of us just make stuff that works super well, regardless of what the expected outcome or spec's suggest.
It means that we don’t really understand it completely. Take ten people who look at an object and learn the color of that object. How do we know they are all seeing the same color. How do we know how their brain actually sees it. They have just learned it.
Hello everyone,
I’ve come up with a new Interpretation of Quantum Mechanics, and it truly is new.
I’d like your expert opinion as I’ve thought through in every way and appears to be objectively correct.
I believe it answers the idea of particles existing in every position simultaneously, the magical “collapse” of the wave function, and double split. AI tried to stump me with every scenario but couldn’t.
TIMELESS QUANTUM DOMAIN VS TIMED CLASSICAL WORLD:
I’ve been thinking about the measurement problem and superposition, and I believe the standard language (“collapse of the wave function upon observation”) is unnecessarily mystical. Here is a simpler, more intuitive model:
Core Idea:
• Time = Change. In the classical world, things age, decay, and move sequentially. In the quantum world, fundamental particles (photons, electrons, etc.) do not experience meaningful change or decay. By this definition, the quantum domain is timeless.
• In this timeless quantum domain, a particle can genuinely explore every possible state and path simultaneously. There is no time constraining it, so all possibilities exist at once. This naturally produces wave-like interference (as seen in the double-slit experiment when unobserved).
• When we measure the particle from our timed classical world, we are not magically collapsing anything. We are simply reaching from a domain with time/change into a timeless domain. The detector catches the particle in one single definite state — whichever path it happened to be on at the exact moment our timed observation intersects the timeless system.
Analogy:
Imagine I am a particle in a lab with 10 scientists. I have a device that freezes their time completely. While they are frozen, I can go left, right, up, down, through every possible path in the lab simultaneously — because time doesn’t constrain me. From their perspective (if they could somehow perceive it), I would appear to be doing everything at once.
When they “measure” me by restarting their time, they don’t collapse my wave function through observation. They simply catch me in one single position at that moment — whichever state I happened to be in when their time resumed. They see a particle, not the full wave.
This removes the spooky “consciousness collapses reality” element. The transition is simply the boundary between a timeless quantum domain and our timed classical world.
I believe this model explains the double-slit experiment cleanly without mysticism and aligns with ideas like emergent time in quantum gravity.
What do you think? Has anyone explored something similar?
Enjoy the mystery we may never realise.
Enjoy that we are but a temporary quantum pattern,
having a conscious experience,
talking to other quantum patterns,
on a spinning planet,
in a galaxy,
in a Universe that appears infinite but may not be.
The Quantum Reality we do not yet know,
but only see it with mathematics and logic.
I saw a recent article about a new finding on the double slit experiment with light. Some titles even claiming Einstein was wrong. It was this year 2026, and quite recently. When I google results in the last month, there are plenty of articles to choose from.
I think I read the article at the time, but I can't remember it. I guess I only lightly read it.
Good video though. Helped.
OUR BRAINS ARE BASED ON QUANTUM MECHANICS, BUILT BY QUANTUM MECHANICS, USING QUANTUM MECHANISMS
There is nothing I can say. I can only absorb as much as I can.
How can you claim to explain something you don't fully understand message me if you want a real explanation
Arkansas Barbee here, subliminally i think anyone with a British Accent is smart😂
To be born with science is the most beautiful genius to serve humanity on board this rock "Mother Earth".
I helped change that way of thinking I believe so 😂 not egotistical but as a scientific experiment , either way thank you for sharing you’re insights and wisdom 👨🔬
How many atoms are there in the. universe?
Mr. Kox I must say that your though stream is totally outside of my range of expertise 😊
JESUS IS GOD, the sooner you realize this the better
I have still never heard you say anything that isnt obvious. You always only recite basic knowledge without any kind of originality. But I guess you are a good teacher at a lower level.
I AM WRITING ABOUT QUANTUM EVOLUTION – THERE IS NO PROBELM – FIRST YOU HAVE TO CONFRONT RALAIVITY – IT IS NO MORE THEORY IT IS ACTIVE WHICH CAUSES QUANTUM ENTAGLEMENT UND CONFUSION – THE ISSUE YOU ARE DISCUSSING – IT IS UNFORTUNATE THAT NOT EVERYONE WANTS TO FACE OFF AND ACHEIVE THAT LEVEL GRASPING THE IDEA DUE TO CORRUPTION – GREED – ENVY – LAZINESS – CRIMES – FOCUSING ON ONE LEVEL OR LET US SAY FEW LEVELS OF THE REALITIES AT HAND DEOS NOT GET YOU ANYWHERE EXCEPT TO MAKE YOU MORE CONFUSED STUCK WITH TANGENT – IN ORDER TO COMPREHEND – IT IS A NEVER FIXED STATUS IT IS ON GOING IT IS [INFINITE] QUANTUM EVOLUTION ONE HAS TO BE CLEAR FROM ANY CORRUPTION ON ALL LEVELS AT ONCE PSYCHE CONGNITIVE MENTAL SPIRITUAL PHYSICAL AWARE OF OTHER SYSTEMS – [TRUTHFULNESS – HONEST – JUST – JUSTICE FOR ALL] IT IS SIMPLE YET SUFFISTICATED ALL AT ONCE!
Time and again, quantum physicians fail to explain what they have learned in an applicable manner, yet still the media seeks to make it sexy. I can't understand why the experts don't use applicable examples to show quantum physics at work and I suspect it's because their ducks just aren't lined up yet. Quantum computing provides a nice lab where numbers and formulas can exist in controlled environments with little environmental context, but that only helps the computing sector. I'd expect to see the physicists start to show that their work is applied with say weather or power or chemistry, and maybe some theory from this century. I have no problem with the challenge of a science that is not mature, but then, we have similarly important and unsolved complexes in tangible spaces like soil science, atmosphere, and marine ecology, which I would expect channels like this to take a little more interest in.
If i get a bucket of water out of a lake,is that a particle of the waves on the lake.?
I'm 71 and was hopeless at Maths and the Sciences at school. When I read that Feynman said "I think I can safely say that nobody understands quantum mechanics." I felt much better. And I've read enough to know that he was going to mention the double slit experiment.
outer wilds reference!
22.4