Johan Henriksson
johanhenriksson.bsky.social
Johan Henriksson
@johanhenriksson.bsky.social
Physicist
Reposted by Johan Henriksson
Yang got the Nobel Prize in 1957 and died today. He's behind Yang-Mills theory, which is the basis for the Standard Model, among other things
Chen Ning Yang, Chinese-American physicist and Nobel laureate, dies at 103
Renowned 1957 Nobel prize winner worked on statistical mechanics and symmetry principles in elementary particle physics
www.theguardian.com
October 18, 2025 at 8:17 PM
Reposted by Johan Henriksson
Det här med att separera ärtor och ris i en roterande trumma, det experimentet skulle jag vilja testa. Att de lägger sig i band är lite magiskt, liksom.
What’s the matter with condensed matter? Getting past the relative obscurity of solid-state physics in the public eye – Physics World
James Kakalios on the condensed-matter physics popularity problem and how to fix it
physicsworld.com
September 2, 2025 at 4:13 PM
Reposted by Johan Henriksson
Problemet med resonemanget är att det utgår från att närvaro = påverkan. Twitter dog inte för att "fel" människor lämnade, utan för att plattformens infrastruktur förändrades. Algoritmen, modereringen och ägandet driver den aktivt mot desinformation, högerextrem mobilisering och hat.
Om alla här på Bluesky som hoppat av Twitter hade varit kvar hade det varit en stark kraft i träsket som är Twitter idag. Varför har jag fel?
August 22, 2025 at 7:48 PM
Reposted by Johan Henriksson
My thanks to the generous people at Scientific American, who asked for a piece on the overturning of scientific paradigms and didn't blink when they got a piece about relativity, malaria, surveys of the Great Plains, mammograms, LLMs, climatology, COVID, Back to the Future, and some other stuff.
What Happens When an Entire Scientific Field Changes Its Mind
Total reversals in scientific thinking are rare—but earth-shattering
www.scientificamerican.com
August 21, 2025 at 4:43 PM
Reposted by Johan Henriksson
Globalt investerar Amazon, Microsoft, Meta och Alphabet en summa motsvarande halva Sveriges BNP år 2025 på att bygga elslukande datacenter. Dubbelt så mkt som fjol.
Om 5 år väntas jättarnas serverhallar förbruka lika mkt el som Japan. Ingen klimatkris här inte!
Visst är det viktigt att kunna chatta med en AI-bot! Då får familjers el och bostäder komma i andra hand.
I Dublin slukar techjättars datacenter mer än hälften av all el, det leder till enorma elavgifter och bostadskris för vanligt folk. Och detta är bara början av #AI-boomen.
Sverige nästa!
#SvD
August 9, 2025 at 8:22 AM
Reposted by Johan Henriksson
”Men vad är egentligen problemet? Här kommer en ledtråd på tre ord:

Ingen. Är. Ansvarig.”

Läs Jonas Fröberg, tåg-Sveriges Andreas Cervenka.

www.dn.se/ekonomi/jona...
Jonas Fröberg: Sveriges järnväg kollapsar – och ingen styr tåget
En kommentar av DN:s ekonomireporter Jonas Fröberg om tågen.
www.dn.se
July 27, 2025 at 8:19 AM
Reposted by Johan Henriksson
and the summary plot comparing the new results to previous and theory calculations (screen grep, yes this is live science!)

red points/purple points: experimental data. Yellow points: theory consensus now with lattice QCD (see also difference in size of uncertainties)
June 3, 2025 at 4:56 PM
Reposted by Johan Henriksson
Letzte Chance: JETZT noch der Nutzung der eigenen Kommunikation durch #Meta fürs KI-Training widersprechen (selbst, wenn Ihr den Account anschließend ohnehin löscht). Oder wollt Ihr das Rohmaterial für Zuckerbergs künstliche Freunde liefern? www.spiegel.de/wisse...
May 26, 2025 at 8:18 PM
Reposted by Johan Henriksson
SciPost is at crossroads. Please help @scipost.bsky.social if your organisation can.
jscaux.org/blog/post/20...
Jean-Sébastien Caux: blogpost on SciPost at a crossroads
jscaux.org
May 18, 2025 at 10:27 AM
Reposted by Johan Henriksson
I ett förfluget ögonblick hasplade jag ur mig att jag även skulle upplysa om skillnaden mellan gatsten och kullersten 😁
Varsågoda!
Gatsten är alltså tillhuggen och platt ovanpå. Kullrigare än asfalt, men ändå. Kullersten är rund (tack inlandsisen).
May 8, 2025 at 6:44 AM
Reposted by Johan Henriksson
The LHC experiment collaborations #AtCERN receive Breakthrough Prize

The prize is awarded to ALICE, ATLAS, CMS and LHCb, which unite thousands of researchers from more than 70 countries, and concerns the papers authored based on #LHCRun2 data up to July 2024.

Read more: home.cern/news/press-r...
April 7, 2025 at 6:51 AM
Reposted by Johan Henriksson
Great (and rare!) @wired.com story on the transformative story of Arxiv, and its creator Paul Ginsparg www.wired.com/story/inside...
Inside arXiv—the Most Transformative Platform in All of Science
Modern science wouldn’t exist without the online research repository known as arXiv. Three decades in, its creator still can’t let it go.
www.wired.com
March 27, 2025 at 4:58 PM
Reposted by Johan Henriksson
𝗪𝗲 𝘀𝗲𝗲 𝗖𝗣 𝘃𝗶𝗼𝗹𝗮𝘁𝗶𝗼𝗻 𝗶𝗻 𝗯𝗮𝗿𝘆𝗼𝗻𝘀!

Today the LHCb collaboration posted a #preprint on the first observation of CP violation in baryons. What's the matter?

Spoiler alert: contains bananas 🍌

#thread below
March 25, 2025 at 4:06 PM
Reposted by Johan Henriksson
Once again, the EU has a major, major opportunity to invite US colleges, universities (and their endowments) to set up in small cities and rural towns throughout the continent to do research and science and education freely
The GOP's proposed 21% tax on endowments would be devastating for higher ed, for many a bigger hit than IDC caps.

Result: program closures, higher tuition, less financial aid, donor lawsuits.

If your reaction is "so what, unis have plenty of money" read @epopppp.bsky.social's primer on endowments.
February 26, 2025 at 6:07 PM
Reposted by Johan Henriksson
JÄTTELÄGE för svenska universitet att ragga amerikanska forskarstjärnor inom biomedicin och hälsovetenskap.
February 13, 2025 at 7:00 PM
Reposted by Johan Henriksson
Or pay communally - that way the poor countries can science along too

But that involves high levels of organisation, not every field is as pedantically organised as us particle physicists scoap3.org
SCOAP3 – The Sponsoring Consortium for Open Access Publishing in Particle Physics
scoap3.org
January 27, 2025 at 12:55 PM
Reposted by Johan Henriksson
A Canadian man narrowly avoided being struck by a meteorite that crashed into the walkway outside his home.
The offending space rock has since been bagged & tagged. 🧪

www.cbc.ca/news/canada/...
January 16, 2025 at 3:04 AM