Q&A - Quantum Fields: The Real Building Blocks of the Universe - with David Tong

According to our best theories of physics, the fundamental building blocks of matter are not particles, but continuous fluid-like substances known as 'quantum fields'. David Tong explains what we know about these fields, and how they fit into our understanding of the Universe. He covers topics from the Big Bang to the latest developments in particle physics from CERN.

[glenn-younger]

Who else is in love with David Tong's style? Bring him again and again, please.

[RUTARAN]

Why did this have to stop!! Absolutely fantastic lecture.

[yvbwzfn]

Please more video content from professor Tong! He possesses the rare gift of radiating enthusiasm and excitement for things that are often left hidden away behind a wall of technical words, mathematical intricacy anda seemingly impregnable stock of foreknowledge! These videos and his lecture notes are golden.

[Hyporama]

don't believe ever watched a video where the presenter was so conversant and approachable in such an exotic subject.

[seatown]

Not to be an asshole, but is there a possibility in the future to see where his laser pointer is pointing? I love these lectures but it would help a dummy like me follow along lol. Thank you! It's been for a great privlage to watch these lectures!

[matthewwheatley]

Hey RI; thanks for the video. It would be great if when he refers to slides in the questions, or also in the main presentation with his laser pointer, that you put that fullscreen with the pertinent information underlined.

Thanks

[robertschlesinger]

Excellent lecture and Q & A session. I look forward to more lectures by Professor David Tong.

[davidchou]

"Dust"...and the one guy in the history of the world who devoted his life to studying it, dashing the hopes of theoretical physcists worldwide!!

[sekoivu]

That's just amazing to see the intellectual excitemen of the David Thong. He's really encouraging young scientist. That's the way, that's the way!

[Ginanity]

What a wonderful speaker and topic. I love his style: friendly, direct, informed, but taking no prisoners :).

[AnthonyJones-zody]

As an observation - he would make a fantastic Dr. Who... and would probably be able to create his own Tardis and be able to put it in an old fashion British style phone both... Love his presentation and lecture... All the (continued) VERY BEST!

[cesarjom]

Really like Prof Tong's answer that the solutions of QM equation are discrete but the underlying fields are themselves continuous. However there are many who would argue that our reality comes through in those solutions only, when we observe the system of QM states (collapsing to a single observable quantum state), and we cannot ever know the underlying continuous nature of a system much less our universe.

[TheSuperAtheist]

I have found a new favorite physicist. This is a good day

[chetan]

6:37, Harry Potter has questions about QFT

[indiaview]

There must be a noble prize give to that person who will solve that exponential terms including integration and other terms of that equation..

[keepitreal]

Thanks for publishing this most enjoyable talk!

[TheRetroEngine]

Came from the brilliant lecture and even his QA session works wonders. Going look around for more David Tong lectures. Pure passion and excitement. I flippin' love it.

[deltango]

I feel very lucky for getting to this video. Delicious stuff!

[biketyson]

David Tong is the greatest speaker. Just amazing.

[bertpineapple]

Excellent, my perception just went up up. David Tong is my new favourite science communicator. I wonder if he has a brother called Pete?