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/sci/ - Science & Math


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File: 1.03 MB, 1145x1527, Freeman_Dyson_(2005).jpg [View same] [iqdb] [saucenao] [google]
11425183 No.11425183 [Reply] [Original]

Despite being 96, I feel like he was still young

A whole generation gone

>> No.11425202
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11425202

>Dyson sphere!

>> No.11425224

>>11425183
>it's real
fucking hell
RIP

>> No.11425225

>>11425183

He has finally returned to Valinor.

>> No.11425245

>>11425183
Sad day for physics

>> No.11425271

>>11425202
The idea of complete isolation can cause really wrong things...

Maybe there are different, better sources of energy than stars.

>> No.11425282

>>11425183
Overrated boomer who took credit for real genius Feynman's work.

>> No.11425366

F

>> No.11425393

>>11425202
this, what did he do of actual scientific value? Or is it one of those meme scientists whom r*ddit loves but is actually not very relevant in actual science? Honestly asking, I don't spend my life reading biographies of recent physicists.

>> No.11425394
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11425394

>>11425183

>> No.11425498

What the fuck it's real.
F

>> No.11425545

>>11425393
He seems like kind of a token guy to me, but he had interest takes on mathematics, academia and other things. His interviews are worth watching

>> No.11425572

>>11425393
He'd been a meme scientist for a long time, but not necessarily the bad variety. He wasn't a NDT-tier Reddit lord.
He did some excellent foundational work in QED, and then Oppenheimer gave him a permanent tenured spot at the IAS with zero responsibility in the early 50s. Dyson's reaction to this was more or less
>lol k im just gonna fuck around for the next 70 years then
So he did a lot of meme stuff, especially in later years, because he didn't give a shit about being serious and didn't really have to.

>> No.11425604

>Didnt even have a PhD
literally Neil Degrasse Tyson tier

>> No.11425635
File: 63 KB, 652x462, 2020-02-28 22.25.53.png [View same] [iqdb] [saucenao] [google]
11425635

>>11425572
Thanks, that seems pretty consistent with what I'm reading in his NYT obituary. I mean, wtf am I reading, come on...

>> No.11425681

>pop-sci tier retards shitting on Dyson ITT
He was one one of the founding fathers of QED / renormalization theory and one of the driving forces behind Random Matrix Theory. But I guess I was expecting far too much from /sci/.

>> No.11425688

>>11425183
>Dyson
damn it, I was just thinking about him. One of my favorite physicists.

>> No.11425695

he made a great goddamn vacuum cleaner, i'll tell you what.

>> No.11425936

>>11425183
F

>> No.11426099

>>11425183
This guy was the scientist I looked up to and got me to try my hand at physics, despite going to university late. He proved that there wasn't one path into academia, and that you can follow your own way and still make it. I'm really sad to hear he passed, hit me far harder than Hawking.

>> No.11426108

>>11425393
he did some very important work on QED, but probably most importantly is that he took Feynman Diagrams seriously. Up until him most scientist just thought Feynman was just goofing around with his diagrams, but when Dyson applied rigorous math to them and showed everyone why the diagrams are so helpful (and gave them to equations to go back and forth between the way they were doing QED and the Diagrams) the physics community finally clued into what Feynman was doing and started using them.

>> No.11426109

>>11425572
so basically a /pol/tard

>> No.11426286

>>11426109
well, Dyson was a "climate skeptic" so there is an argument to be made.

but actually our dearly departed Freeman was a progressive in certain ways -- for example he was very strongly opposed to nuclear proliferation and was a huge influence speaking against cold-war warmongering as well as post-cold-war military industrial complex. so in the end he was cool overall.

>> No.11426627

one of his better later talks https://www.youtube.com/watch?v=zq4p2qbE684

>> No.11426991
File: 33 KB, 476x328, Erdos_Budapest.jpg [View same] [iqdb] [saucenao] [google]
11426991

Time, Dr. Freeman? Is it really that time again? It seems as if you only just arrived. You've done a great deal in a small time span.

>> No.11427009

>>11426286
Being anti nuclear is cool.

Lol, ok grandpa.

>> No.11427014

>>11427009
by “nuclear proliferation” i was referring to nuclear weapons

>> No.11427145

>>11425183
he was u unironically the last real physicist left

>> No.11427181

>>11425635
scientists are always retards when they speak about topics outside their domain

>> No.11427185

>>11426286
Feynman was a coomer sex addict

>> No.11427192

>>11425202
>>11425393
Only pseuds lack imagination.

>> No.11427197

>>11425202
>>11425271
>>11425393
>>11425545
>>11425572
So many plebbitor teenagers in this thread. Janitors are fucking wothless.
>>11425681
Don't bother anon, this board has little do with science. It's plebbit lite.

>> No.11427427

>>11425183
is this the guy who made the dyson vacuum?

>> No.11427504

>>11427197
>>11427197
You are a r*dditor, faggot. You worship a popsci figure with an unclear academic contribution, and you had the need to come here and whine about others not thinking the same way as yo. Missing the downboat button?

>> No.11427529

>>11427504
is this the guy who made dyson vacuums faggot? tell me

>> No.11427531

>>11427504
Dyson's academic contributions are only unclear to people who haven't studied any physics from the last seventy years.

>> No.11427538

>>11427197
A lot of what Dyson wrote was straight-up sci-fi dude.
Chill the fuck out, he's dead, we're all sad, that doesn't mean you have to worship him as an unassailable god who never did anything that wasn't serious science in the last 90 years

>> No.11427546

>>11427538
you still haven't told me if he made the dyson vacuum or not you fucking fag

>> No.11427553

>>11427546
>the other 23 people in this thread are all the same person

>> No.11427575

>>11427553
are you stupid

>> No.11427581

>>11427504
>popsci figure
go back to /tv/

>> No.11427582

>>11425183
we still have watson

>> No.11427644

>>11427531
Elighten me then, person who is very proud of having studied

>> No.11427649

>>11427644
>>11425681
read the thread moron

>> No.11427655

>>11427538
>>11427504
I never said Dyson was some God and I certainly don't worship him, but the soulless idiots lacking imagination and a sense of wonder have stifled the creativity of this board.
>>>/x/ !!!!!!
Great minds think beyond the boundaries of what we know possible, it's how we advance scientifically. Dyson has dreams of amazing things, it doesn't even for a moment take away from his abilities as a scientist, in fact, it reinforces them.

>> No.11427658

>>11427644
>https://en.wikipedia.org/wiki/Freeman_Dyson
"Dyson originated several concepts that bear his name, such as Dyson's transform, a fundamental technique in additive number theory,[11] which he developed as part of his proof of Mann's theorem;[12] the Dyson tree, a hypothetical genetically-engineered plant capable of growing in a comet; the Dyson series, a perturbative series where each term is represented by Feynman diagrams; the Dyson sphere, a thought experiment that attempts to explain how a space-faring civilization would meet its energy requirements with a hypothetical megastructure that completely encompasses a star and captures a large percentage of its power output; and Dyson's eternal intelligence, a means by which an immortal society of intelligent beings in an open universe could escape the prospect of the heat death of the universe by extending subjective time to infinity while expending only a finite amount of energy. "
Go be a pseud on plebbit.

>> No.11427661

>>11427649
Alright, he was a key figure in the development of QED apparently. I take back my words of calling him a popsci figure

>> No.11427845
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11427845

>>11425393
>>11425572
>>11427504
>>11427644
>>11427661
Dyson was a great physicist, universally recognized, and Weinberg said he was "fleeced" of the 1965 Nobel prize. His great work on electrodynamics explained the importance of operator dimensions, and he sketched the main reason for renormalizability--- that operators of dimensional analysis dimension 4 are special. This idea is central to modern renormalization theory, and it wasn't there in Feynman or Schwinger.

His dimensionality argument was criticized as insufficiently rigorous, because of the problem of "overlapping divergences", but this problem is superficial--- the overlapping divergences are really separate divergences as was understood in the 1950s by Zimmermann (but alas, nobody understood Zimmermann!), and later in a more transparent way by Wilson in the 1970s, further elaborated by Polchinsky in the 1980s. In mathematics, Zimmermann's ideas transmuted into the Connes Kreimer idea of using Hopf-algebras of point-collisions to organize the perturbation expansion renormalization, but the upshot of all that development is simply that Dyson had the right idea, the operator dimensions are sufficient to establish renormalizability.

Dyson did many other things, in engineering, like Orion, and just general nice thinking, like his ideas about origins of life, floating cities, and various mathematical things like his argument for the divergence of the perturbation series. But I think his immortal contribution was his extension of Wigner's Random Matrix theory into a real mathematical theory. This is where I think he was fleeced: of the 1963 Nobel prize, not the 1965 one, because Random Matrix theory is a much more distinctive unique contribution than the QED stuff, which, great as it was, would have been done by other people much the same way anyway.

>> No.11428041
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11428041

>>11427197
>janitors should delete posts I don't like for not worshipping le based scifi scientist

>>11427655
>lacking imagination and a sense of wonder have stifled the creativity of this board
So you're still talking about nonsensical scifi faggotry, got it. You're proving the point that people care about him because of space tree retardation, not quantum physics breakthroughs.

>>11427658
>Dyson's transform
>Dyson series
real research, presumably, of which you most og you cunts calling others "pseuds" can hardly explain the value

>Dyson tree
>Dyson sphere
>Dyson's eternal intelligence
laughable scifitard bullshit that only amazes easily impressed middlebrow cunts. So 60% of what you quoted is worthless Rick and Morty-tier bullshit.

>> No.11428062
File: 48 KB, 300x348, bully-64a6f548.jpg [View same] [iqdb] [saucenao] [google]
11428062

>>11428041
see >>11427845

>> No.11428256

>>11425202
Retard

>> No.11428616

>>11427014
Ok boomer, did you finish masturbating to Sagan yet?

>> No.11428673

>>11425202
>Dr Freeman
Yes,Gordon Freeman

>> No.11428895

E.O Wilson?!!

NOOOOOOOoooooo

>> No.11429010

>>11425604
>>Didnt even have a PhD
>literally Neil Degrasse Tyson tier
let me know when Oppenheimer appoints you or NDT as lifetime faculty at the IAS. PhDs are cranked out like sausages, Piper Harron got one from Princeton for accomplishing jack shit, and many qualify you to serve coffee at Starbucks. Dyson, OTOH, was the real deal and at such a high tier as to bypass all that bullshit and get down to work making QED and nuclear bomb propelled spaceships.

>> No.11429021
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11429021

>>11429010
>Piper Harrington
Googled her to see what she was up to and the first hit is this:https://www.reddit.com/r/math/comments/5v9sh6/what_are_your_thoughts_on_piper_herron/
Anyone familiar with completely-ineffable? Hes a commie, and it's actually interesting to see the mental gymnastics he employs to deny the fact that Piper is a fucking embarrassment to Princeton

>> No.11429056

>>11425183

I all seriousness I fucking hate Dyson spheres.

It's just a sci-fi concept and species advanced enough to build one most likely will never need it since there must be far better ways of getting energy. Like just shooting lasers at black holes.

>> No.11429262

>>11429056
>Like just shooting lasers at black holes.
that's an even dumber idea, how the fuck are you getting energy out of that?

>> No.11429451

His vacuums are shit and his fans are scam.

>> No.11429478
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11429478

>>11429021
Fucking lmao check her twitter its full of gold

>> No.11429637

>>11425183
F

>> No.11430461
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11430461

>>11429021

>http://www.theliberatedmathematician.com/cv/

lol sounds like Lubos' perfect gf

>> No.11432258

>>11425183
F

>> No.11432653

>>11430461
lol we should make this a meme. piper and luboš has a fling and he went hard-right because she couldn’t last in bed with her, something along those lines

>> No.11432946
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11432946

>>11429021
>>11429478
>>11430461
>>11432653
NEWFAGS GET THE FUCK OUT