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Any physicists around who can help me understand something?
How should I picture neutrinos in a QFT context? If particles are ripples in their field, and we can detect only a teeny-tiny fraction of neutrinos, what does that say about their field? Is it somehow quiet, and only ripples when we make a chance detection of a neutrino? Is it constantly rippling, but so noisily we can hardly ever detect a signal in it?
Or have I got this all wrong?
(Boosts OK, of course.)
@grork “We’re gonna be like a startup” is just rationalization for layoffs.
Oh, you’re gonna be lean like a startup eh? Will the workers be getting significant equity in addition to their pay too, or just more work? Cause startup workers get equity.
alternativeto.net/news/2024/11…
Dear Patreon subscribers,
For All Mankind is 5 years old today, and to celebrate, here's a list of all the spaceships, with concept art. 👌
The more time passes in this alternative timeline, the more impressive the machines become.
patreon.com/posts/for-all-mank…
Friends, what #email client are you running on #Linux these days?
I've been running #Thunderbird since... the beginning?
The last few weeks I've tried a few other clients. #Evolution is decent but the GUI is stuck in the past, rough edges, clunky.
#Geary is ok. More modern but a little simplistic and I can't seem to find a way to disable threading (do not like). Graphically slow as well it seems.
What graphical client are you using that you like? What is it that you like about it?
Boost?
My favourite e-mail client is KMail, as part of KDE Kontact PIM suite
kontact.kde.org/
kontact.kde.org/components/kma…
#email #PIM #OpenSource #FreeSoftware #Linux #KDE
Tech Cyborg reshared this.
Umstieg auf macOS, ChromeOS oder Linux: Hauptsache weg von Windows | c’t uplink | Heise Online
Windows nervt, macOS ist teuer, ChromeOS speichert alles bei Google, Linux ist kompliziert? Stimmt das noch? Wir berichten im Podcast von unseren Umzügen.
heise.de/news/Umstieg-auf-macO…
Crazy weather in Mediterranean Spain. I had decided to spend the couple weeks seeing the southwest coast, haven't had much more than annoying quantities of drizzle.
The storm has gone very badly. So much devastation in the area around Valencia.
An animation from EUMETSAT’s satellite "Meteosat Third Generation – Imager 1" showing how the storm takes Mediterranean humidity and just dumps it out onto the land, with the same spots just getting more and more rain.
The animation is from 0 UTC Oct 29 to 10:00 UTC Oct 30th.
Mon frangin qui crapahute en Australie me fait découvrir cette étonnante bestiole... Devinerez-vous ce que c'est ?
Koh Kong Cambodia. Wonderful place. Too bad so far away for us. Took 11 hours getting there. Then three days of beach. Waterfalls. Eating and drinking. If you visit it's worth going.
#kohkong #cambodia #photography
The Arizona AG is investigating Trump’s “guns trained on her face” comment about Liz Cheney as a death threat.
His violent and demeaning rhetoric implicitly gave some PA citizens permission to have a Halloween parade entry with a woman dressed like Kamala Harris “shackled.”
Violent rhetoric is a virus.
themoderatevoice.com/trump-esc…
#USPolitics
#Election2024
#trump
#violence
Supreme Court allows Pennsylvania voters who sent defective mail-in ballots to cast provisional ones in person (Lawrence Hurley/NBC News)
nbcnews.com/politics/supreme-c…
memeorandum.com/241102/p3#a241…
The final undecided voters could sway the election. They're not wild about the choice. (NBC News)
nbcnews.com/politics/2024-elec…
memeorandum.com/241102/p2#a241…
Python in Visual Studio Code – November 2024 Release
The November 2024 release of the Python and Jupyter extensions for Visual Studio Code are now available. This month's updates include docstring template generation with Pylance, Fold/Unfold All Docstrings commands, a variable view with the Native REPL and more!
devblogs.microsoft.com/python/…
By: Courtney Webster
John Carlos Baez
in reply to Florian Haas • • •- To say that in quantum mechanics things aren't really there until we see them is more confusing than helpful, in my opinion. It's an attitude you can take, but it's not required. Most physicists DON'T say neutrinos only exist when we interact with them. Doing so would raise a lot of weird questions, like "why do we interact with them if they don't exist until we do?" or better "how exactly are we supposed to calculate the probability that an interaction happens, if nothing is going on until it does?"
So I think you should imagine this. The Sun puts out lots of antineutrinos due to fusion. So it shoots out lots of little ripples in the antineutrino field, but very rarely do these interact with neutrons here on Earth, which are big complicated ripples in the quark fields. Most of them go through.
And you don't need to talk about this using quantum field theory unless that actually helps - like if you're doing calculations that use quantum field theory. You can just say there are lots of antineutrinos zipping about, made by the Sun for example, and the chance that any o
... show more- To say that in quantum mechanics things aren't really there until we see them is more confusing than helpful, in my opinion. It's an attitude you can take, but it's not required. Most physicists DON'T say neutrinos only exist when we interact with them. Doing so would raise a lot of weird questions, like "why do we interact with them if they don't exist until we do?" or better "how exactly are we supposed to calculate the probability that an interaction happens, if nothing is going on until it does?"
So I think you should imagine this. The Sun puts out lots of antineutrinos due to fusion. So it shoots out lots of little ripples in the antineutrino field, but very rarely do these interact with neutrons here on Earth, which are big complicated ripples in the quark fields. Most of them go through.
And you don't need to talk about this using quantum field theory unless that actually helps - like if you're doing calculations that use quantum field theory. You can just say there are lots of antineutrinos zipping about, made by the Sun for example, and the chance that any one of them hits a neutron and turns it into a proton and electron is very low. Most of them just sail through us.