The Unreasonable Effectiveness of Physics in Maths, David Tong

The Unreasonable Effectiveness of Physics in Maths, David Tong | LMS Popular Lectures 2017

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Күн бұрын

For centuries there has been a close relationship between mathematics and theoretical physics. For the most part, this involved physicists gleefully using ideas previously developed by mathematicians. In the past few decades, that relationship has taken a surprising twist: in their quest to understand Nature, physicists have developed new tools, such as quantum field theory and string theory, which provide insight into questions in pure mathematics.
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Пікірлер: 31

@mikeschatz9153 5 жыл бұрын

David Tong should be groomed to present these ideas to the masses. He is much more entertaining and enthusiastic than his famous American counterparts.

@ViceroyoftheDiptera 4 жыл бұрын

I was lucky to have Tong as my lecturer in my undergrad!

@alokeshchakraborty2296 2 жыл бұрын

U r Very lucky

@misbahkhanmd5226 5 жыл бұрын

I can listen to David Tong all day, everyday, and be thoroughly amazed 👌 I wish I could meet him someday

@silverblade3164 2 жыл бұрын

I have met him. He is truly as humble as he is smart.

@JonnyMath 7 ай бұрын

So do I🤩

@usnavycm 6 жыл бұрын

Very good speaker. Always showing energy and enthusiasm.

@teebee5323 5 жыл бұрын

David is a genius, I don't say that because of his particular use of string and quantum fields but because he can relate the concepts at a novice level with lucidity that is a joy to listen to, and not only energetically enthusiastic but humorous as well.

@user-ln5nk7mg4v 4 ай бұрын

The reason Mathematics and Physics are so compatible is they are two of the trinary sciences under Modeling science, the third science in the trinary is Automation science which is yet to be formally recognized as part of the trinary. Automation will come on its own once AGI is achieved.

@RavjiPindoria 5 жыл бұрын

Super presentation, brilliant talk and nice explanation on equations in relation to quantum theory.

@simonhm72 3 жыл бұрын

It’s pretty simple... I see David Tong, I click the link

@Dr10Jeeps 6 жыл бұрын

Excellent! What a fascinating scientist to listen to.

@Simonlont 2 жыл бұрын

What a joy is it to listen to David Tong!

@fabianothulu2712 3 жыл бұрын

I have just discovered a great science speaker..... Prof David Tong

@AlexHop1 5 жыл бұрын

Thank you, Dr. Tong, such an interesting lecture with new ideas! I was particularly struck by the idea that the quantum state can be used in understanding the math of manifolds. And also, in the Q & A, the non-fruitfulness of the multiverse idea, and the final Q about why physicists are not enthusiastic about "realistic interpretations of quantum physics." I'd be interested in learning more about that last Q, especially clarification of the idea of "non-local dynamics" vs entanglement.

@BeatPOWERvomPowerhof 2 жыл бұрын

amazing lecture!

@shubhashismallik1718 Жыл бұрын

Excellent talk.

@robertoweitnauer9878 3 жыл бұрын

Many thanks.

@rustyroche1921 3 жыл бұрын

hippies at the end are the icing on the cake

@narayankhanal5240 2 жыл бұрын

I want to meet my favourite and respected prof.David Tong.

@hannespi2886 Ай бұрын

Biologists: Hold my mushrooms

@alokeshchakraborty2296 2 жыл бұрын

I would like to meet this genius

@Dr10Jeeps 6 жыл бұрын

Maybe the building blocks do progress smaller and smaller into infinity and that may explain the "origin" of the universe.......i.e., it always existed in some "form" and the Big Bang was simply an "accidental" event. (Sorry, I haven't described my point very well but it's late and I'm tired :) ).

@enlongchiou 4 жыл бұрын

String k theory 2*3.14(2-2(3))=-8*3.14 shape landscape of space time by vacuum energy ch symmetry at Planck,proton,atom 3 scale, gravitational potential energy ch equal to gm^2 time sum of 1/n which's zeta function.

@georgeR3Roadster 5 жыл бұрын

I really like all this of course and I try to understand .... yeah I try ... but it is not clearly explained hé : he speaks about the number "g" and says it shows us how fast the spin of the electron changes when influenced by a magnetic field ... ok .... BUT BUT "how fast" ?? what does that mean ?????? after 2.0023 seconds ..... milliseconds ??? it makes a whole turn in 2.0023... milliseconds, it "starts" turning ? very obscure statement .... and what does it have as importance other than experimentation gives a better result ..... ???

@wan3839 5 жыл бұрын

g is dimensionless. If you treat electron as a classical particle e.g. charged sphere and calculate its magnetic moment you'll see it's 2.0023 times smaller than the actual value, that's what g-factor tells you.

@TheMap1997 Жыл бұрын

22:33 that's where the action is

@stevenevans8449 6 ай бұрын

Neither the effectiveness of Maths in Physics nor the effectiveness of Physics in Maths, nor indeed the historical order in which those effectiveness-es appeared are unreasonable. Mathematical intuition is emergent in a brain whose inputs are coarse perceptions of the physical world, and so Euclid and Newton noticed that these intuitions could be used to describe geometry and physics at the coarse level the human brain experiences them (Step 1 Maths is useful in physics). But our perception is coarse so this could not be the end of the story. Further, more precise physical observation and analysis led to concepts not immediately obvious to the human brain (relativity, quantum) and eventually and completely unsurprisingly to new Maths (Step 2 Physics is useful in Maths). tl;dr Maths is the human brain's coarse conception of physics so of course it was useful in early "coarse" physics; more finely observed physics of course then led to new Maths,

@lepidoptera9337 2 ай бұрын

It has nothing to do with the human brain. Mathematical logic is isomorphic to naive set theory. Naive set theory is simply the observation of the behavior of finite numbers of classical objects and their unchangeable properties. In other words, set theory is basic physics. So is finite group theory, which deals with the permutations of objects/physical symmetries of objects. So are finite natural numbers, which are just the cardinal numbers of finite sets (How many marbles in that basket?). All of commutative algebra is basically just applied physics. We can extend this observation all the way to basic calculus, graph theory, number theory etc.. Complex numbers are basically just rotations, so are quaternions. All SU(n) groups are higher dimensional versions of rotations and so on. Mathematicians have ALWAYS taken physical observations and they have generalized them for ever larger numbers of objects. That math works in physics is simply based on the fact that physics came first. Not all of mathematics is derivative, of course, but much of the math that we use in the sciences is.