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The Nobel Prize in Physics 2020

nobelprize.org

71–80 of 153 posts

Re: The Nobel Prize in Physics 2020

#71

Earlier quoted context omitted.

The PR seems like a double dig on Hawking. "Nothing, not even light, can escape." except Hawking radiation?

Hawking radiation is emitted from the outside, if you start beyond the barrier it's usually not counted as an escape.

i thought that a black hole could eventually disappear through Hawking radiation.

Eventually being a really long time.

Re: The Nobel Prize in Physics 2020

#72
post #52

I'm not a physicist but have been reading up on this topic (gravity, general relativity etc.,). Could someone please ELI5 to me why hasn't Schwarzschild been awarded Nobel prize? I read that his work played a big role in discovery of Black Hole and the concept in general. Heck, his name even appears no less than 19 times in the Nobel Committee's article [1]!! [1] https://www.nobelprize.org/uploads/2020/10/advanced-ph…

Nobels are not awarded posthumously, and he died in WWI. On that subject, “Einstein’s War” is an interesting read on the interplay between WWI and the development of general relativity.

What a supreme loss to physics.

Re: The Nobel Prize in Physics 2020

#73
post #70

It's funny when you know of a scientist and their work, but years later you find out what you knew them for isn't what they did best or what they're famous for... I only knew Penrose from Penrose tilings and as the author of The Emporer's New Mind. Black holes? Who knew.

[deleted]

Re: The Nobel Prize in Physics 2020

#74
post #64

Such a joy to see Sir Roger Penrose awarded with this honor. One of my favorite contemporary intellectuals. If anyone hasn't seen it, I recommend his recent appearance on the Lex Fridman podcast: https://www.youtube.com/watch?v=orMtwOz6Db0

I somehow always had the impression that Roger Penrose was a numerical computation guy (Moore-Penrose pseudoinverse). I did not realize he had this vast of scope of a contributions in physics. Certainly quite impressive.

He has also written a few books.

https://www.amazon.com/Roger-Penrose/e/B000AQ045A%3Fref=dbs_...

Re: The Nobel Prize in Physics 2020

#75
Penrose has written the best science book I've ever read. "The Road to Reality". I read it some ten years ago, and it renewed my interest in physics. I must have read at least three dozen of the books in its bibliography since.

Re: The Nobel Prize in Physics 2020

#76
post #71

Earlier quoted context omitted.

Hawking radiation is emitted from the outside, if you start beyond the barrier it's usually not counted as an escape.

i thought that a black hole could eventually disappear through Hawking radiation. Eventually being a really long time.

Yes, it could, and yes, it theoretically [in some models] contains/radiates information.

But the "radiation" happens right at the event horizon, the particles that get emerge have been "created" on the outer side.

https://www.youtube.com/watch?v=XT_iZ7QEit8

Re: The Nobel Prize in Physics 2020

#77

I'm not a physicist but have been reading up on this topic (gravity, general relativity etc.,). Could someone please ELI5 to me why hasn't Schwarzschild been awarded Nobel prize? I read that his work played a big role in discovery of Black Hole and the concept in general. Heck, his name even appears no less than 19 times in the Nobel Committee's article [1]!! [1] https://www.nobelprize.org/uploads/2020/10/advanced-ph…

At the time of Schwarzschild, black holes were only a purely theoretical concept. We only started to get evidence that they exist in the 80s and later.

Re: The Nobel Prize in Physics 2020

#78

Earlier quoted context omitted.

I've always thought Nobel prizes are awarded based on the winners' works in that particular year so this came as huge surprise. Too late for Hawking indeed, he could've very well been one of the winners today.

There's a huge backlog of people who deserve Nobel prizes. The committee is also conservative, and doesn't want to give out a prize for something that turns out to be wrong. Both factors mean that it takes years from discovery to the awarding of a Nobel prize.

It's one thing to allow enough time to pass before a given theory/experiment can be considered as "accepted" by science, and therefore eligible to the award.

However, the Nobel committee's rules can be considered archaic to a fault: 3 winners at most, all winners must be living at the time of the award.

If you want an egregious example of exclusion, look at the 2013 Nobel prize for the discovery of the Higgs boson. The prize was given to Higgs and Englert [0], but by any measure it should have been awarded to the five living scientists who made the discovery [1].

Was there really any reason to exclude Guralnik, Hagen and Kibble, who were all alive at the time of the award, other than a strict adherence to the "rule of three"?

[0]: https://web.archive.org/web/20131008193310/http://www.nobelp...

[1]: https://en.wikipedia.org/wiki/1964_PRL_symmetry_breaking_pap...

Re: The Nobel Prize in Physics 2020

#79

Very much deserved, but why does it take so long to award this prize? Clearly they could have valued this research 20 years ago?

The Nobel is awarded for actual experimental discoveries and validation of theories, not just unproven theoretical speculation.

Weinberg, Glashow, Salaam (1979) were theoreticians, but their theories for electroweak unification had been validated in many experiments during the 1970's, especially weak neutral currents at CERN in 1973.

Higgs & Englert (2013) had to wait for 50 years for their theory to be validated. The ATLAS & CMS experimentalists who discovered the Higgs particle were passed over, but they outnumbered them ~1,000:1, and only up to 3 people are allowed to get the prize in one year.

https://physicsworld.com/a/overlooked-for-a-nobel-the-cern-p...

https://www.theguardian.com/science/life-and-physics/2013/oc...

However, Rubbia & van der Meer (1984) got the prize for discovering the W and Z (ultimate proof of electroweak unification) on behalf of the large CERN SPS collaboration.

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