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Roberto Baginski

@rbbs.bsky.social
371 followers 832 following 191 posts

Physics Professor from Brazil

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Roberto Baginski @rbbs.bsky.social · 5h
Ele não consegue viver sem mentir? sbtnews.sbt.com.br/colunas/colu...
sbtnews.sbt.com.br
Flávio promete a aliados rever ou derrubar fim da 6x1 | Coluna do Túlio | SBT News
Apesar de anunciar voto favorável, candidato do PL sinalizou nos bastidores que pretende atender a demandas do empresariado e alterar a medida após a aprovação
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Roberto Baginski @rbbs.bsky.social · 12/10/2026
@canaltech.bsky.social precisa corrigir a manchete. Amazon não está dando "Kindle de graça." Está apenas trocando produto que vendeu com defeito. canaltech.com.br/e-reader/ama...
canaltech.com.br
Amazon dá Kindle de graça para quem comprou modelo com tela defeituosa
A Amazon reconheceu um defeito de fabricação que afeta os primeiros lotes do Kindle básico de 2026 e está oferecendo unidades de reposição gratuitas para os c...
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Randall Munroe @xkcd.com · 08/10/2026
Juice xkcd.com/3308/
4-panel comic. (1) [Two people, one with a ponytail, sitting and typing at terminals opposite each other. A sign on the wall reads “Juice Mission Control,” with JUICE in huge letters.] PERSON 1: Jupiter Icy Moons Exploder checkin is complete. All systems nominal. (2) PERSON 2 with ponytail. [People turn to look at each other.] PERSON 1: What? PERSON 2: Jupiter Icy Moons *Explorer*. (3) [Person 1 turns back to his terminal.] (4) PERON 1: Control, everything is fine, but I need to schedule an urgent spacecraft update. [Person 2 facepalms] PERSON 2: Oh no.
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Dr. Peter Paul Rubens @peterpaulrubens.bsky.social · 07/10/2026
Fra Filippo Lippi & Fra Angelico together produce a marvelous Adoration of the Magi in c. 1450.
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Roberto Baginski @rbbs.bsky.social · 07/10/2026
iclnoticias.com.br/proibicao-be...
iclnoticias.com.br
Proibição das bets deixa R$ 6,5 bilhões longe das apostas em 10 dias
Proibição das bets impede que R$ 6,5 bilhões sejam destinados às apostas em 10 dias, segundo dados obtidos em primeira mão pelo ICL.
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Karl Bode @karlbode.com · 06/10/2026
over at the newsletter I wrote about the useful bogeyman that is "polarization":
karlbode.com
The Problem Is Right Wing Extremism, Not 'Polarization'
Ambiguous media whining about "polarization" or "partisan tribalism" redirects attention away from the real cause of modern U.S. division: violent right wing extremism.
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Dr. Peter Paul Rubens @peterpaulrubens.bsky.social · 05/10/2026
Portrait of Anton Hundertpfund, looking surprised at all the fuss, in 1526. By Wolf Huber of (mostly) Passau, whose day is today.
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c0nc0rdance @c0nc0rdance.bsky.social · 01/10/2026
You can sort of see it shift in & out of whatever algorithmic "this is how humans write" pattern it has preset: "K-562 lysates were separated by SDS-PAGE gel, transferred to a PVDF membrane & analyze by Western blotting. Here's what that revealed:" Looking forward to "One weird trick" papers.
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derek guy @dieworkwear.bsky.social · 28/09/2026
The Pope reminds me of a version of Catholicism I knew growing up as a young man attending anti-war and anti-death penalty protests, where I met elderly Catholics who shared their version of faith with me. I learned that Catholicism was about love and mercy for the weak, the condemned, and the poor.
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Laerte @laertecoutinho.bsky.social · 27/09/2026
(com descrição)
Tira em 4 quadrinhos. 
1) Homem de negócios, com papéis sobre a mesa e ar deprimido. Voz fora de cena pergunta: “Ó empresário, por que estás tão triste?”
2) Homem responde: “É que descobriram uma fraudezinha contábil aí…”
3) Voz pergunta: “Não foi a camélia que caiu do galho, deu 2 suspiros e depois…?” - o homem interrompe: “Não.”
4) Homem coloca óculos escuros, adota um ar auto-confiante e diz: “A camélia está num lugar seguro.”
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Mark Copelovitch @mcopelov.bsky.social · 25/09/2026
The kids these days will hardly believe it, but a mere two years ago, the mental & physical (lack of) acuity of Elderly Presidents was the Great Issue of Our Time. Someone should tell Jake Tapper & Alex Thompson, so they can write a book on it.
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Dr. Peter Paul Rubens @peterpaulrubens.bsky.social · 26/09/2026
Most glorious Annunciation ever. Yet Mary is clearly not convinced! Painted in 1333 by Simone Martini of Siena, whose day is today, with some help from Lippo Memmi.
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Roberto Baginski @rbbs.bsky.social · 25/09/2026
New paper published: "Radiation Effects in p-GaN/AlGaN/GaN HEMTs: A Cross-Source Investigation" ieeexplore.ieee.org/document/116...
ieeexplore.ieee.org
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Erick Lee @theericklee.bsky.social · 19/09/2026
Math teacher at the gym... on the eliptical machine listening to New Order's Blue Monday and thinking, "I could re-create this animation on @desmos.com." Here is the result www.desmos.com/calculator/k... #ITeachMath
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Atila Iamarino @atila.bsky.social · 19/09/2026
Expectativa/o que empresas de IA vendem: IA da Skynet adquire consciência e declara 3a Guerra Mundial Realidade: Fulano sem usar a própria inteligência começa 3a Guerra Mundial pq acreditou em IA tosca que navio chinês aleatório tinha armas nucleares.
cnn.com
Exclusive: US military had close call after using AI for false intelligence report, sources say | CNN Politics
The episode shows the risks of using this new, relatively poorly understood technology in the middle of the Iran war
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Zach Weinersmith @zachweinersmith.bsky.social · 13/08/2026
Reading final proofs for the new parenting-themed compilation and accidentally made myself sad
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Aki Vehtari @avehtari.bsky.social · 13/08/2026
All four books I've co-authored are freely available online for non-commercial use: - Bayesian Workflow at avehtari.github.io/Bayesian-Wor... Links to other three books are in the quoted post 👇 (too many books to fit in one post!)
avehtari.github.io
Bayesian Workflow book: Website – Bayesian Workflow book
Website for the Bayesian Workflow book by Gelman, Vehtari, McElreath, et al. — case studies, code, and exercises in R and Stan.
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Laerte @laertecoutinho.bsky.social · 24/07/2026
Saiu na Folha @folha.com
Tira de Laerte, em 3 quadrinhos, com o título: “FÁBULAS PUTATIVAS - O URSO E OS ÁCAROS”
1) Um urso segura uma caneta e uma folha de papel e fala: “Quem com ácaros hiberna…”
2) Três ácaros do tamanho do urso se aproximam e dizem, como quem sugere: “…acorda coçando a perna.” - “…muda logo de caverna.”
3) O urso se aborrece e diz: “Ácaro não sabe fazer poesia!” - a seu lado chega um tardígrado, também do tamanho dele, e pergunta: “Prefere tardígrado?”
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Greg Egan @gregegansf.bsky.social · 23/07/2026
Just how annoying this was to Meissner has not been recorded.
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evacide @evacide.bsky.social · 28/06/2026
Ford rehires "greybeard" engineers after its push for AI automation backfires. "Mistakenly, we thought that by just introducing artificial intelligence and ingesting the design requirements that we had, that that would produce a high-quality product." www.the-independent.com/tech/ford-ai...
the-independent.com
Ford hired AI and sacked humans. It backfired badly
‘We didn’t pay as much attention as we should have to the experience of our most knowledgeable engineers,’ says automaker
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Roberto Baginski @rbbs.bsky.social · 09/06/2026
Novo artigo publicado - www.sciencedirect.com/science/arti...
sciencedirect.com
Resilience of the physicochemical properties of graphene-based materials for applications in harsh radiation environments
The development of radiation-tolerant materials capable of maintaining structural, electrical, and thermal stability in extreme, radiation-rich enviro…
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Roberto Baginski @rbbs.bsky.social · 01/06/2026
New preprint on arXiv: doi.org/10.48550/arX...
doi.org
Resilience of the physicochemical properties of graphene-based materials for applications in harsh radiation environments
The development of radiation-tolerant materials capable of maintaining structural, electrical, and thermal stability in extreme, radiation-rich environments remains a critical challenge in materials s...
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John C. Baez @johncarlosbaez.bsky.social · 17/05/2026
If you start with the great icosahedron and apply the Galois transformation, you get a regular icosahedron. If you apply the Galois transformation a second time, you make the icosahedron great again.
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The Congress Man @manthecongress.bsky.social · 29/05/2026
He also made Neil Armstrong do 157 takes of the “one small step for man” line, and then used the first one.
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Clément Canonne @ccanonne.github.io · 28/04/2026
Government officials lobbying for small celestial objects to be reclassified as planets? Yeah, that's a Plutocracy for you
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Hugo Gordon @hugogordon.bsky.social · 22/03/2026
One of my favourite facts is that the spiky tail of a stegosaurus didn't used to have a specific name, until Gary Larson published this Far Side cartoon, at which point "thagomizer" was adopted by paleontologists.
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Filipe Campante @filipecampante.bsky.social · 21/02/2026
Americans would be surprised to learn that, outside a handful of countries, no one has the faintest idea of their beloved “Miracle on Ice”…
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John C. Baez @johncarlosbaez.bsky.social · 29/12/2025
As a college student, Isaac Newton tried to figure out a scale where all the frequency ratios are simple fractions. How did it work, and how does it compare to the scales invented by Mercator, Mersenne and Euler? I'll explain 174,240 such scales. johncarlosbaez.wordpress.com/2025/12/29/j...
johncarlosbaez.wordpress.com
Just Intonation (Part 6)
In this series I’ve been explaining 12-tone scales in just intonation—or more precisely, ‘5-limit’ just intonation, where all the frequency ratios are integer powers of the …
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Roberto Baginski @rbbs.bsky.social · 05/09/2025
An applictaion of a quantum machine learning method to the well known Titanic passenger dataset - arxiv.org/abs/2509.00916
arxiv.org
Quantum Machine Learning Applied to the Sinking of the Titanic
This work investigates the performance of hybrid quantum-classical variational classifiers applied to a supervised learning task involving the titanic3 dataset. Quantum models were constructed using P...
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Zoe Holmes @qzoeholmes.bsky.social · 22/07/2025
Here's a new perspective on why Grover’s algorithm algorithm works: Unstructured search can be written as ground state problem. Then Grover's is just a product formula approximation of imaginary-time evolution or, equivalently, a Riemannian gradient flow on SU(d) to find this ground state.
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Phil PlAIt @philplait.bsky.social · 03/07/2025
An alien visitor is whizzing through our solar system at VERY high speed! Called 3I/ATLAS, I have everything we know about this odd object so far. badastronomy.beehiiv.com/p/another-al... 🧪 🔭
badastronomy.beehiiv.com
Another alien visitor to our solar system!
3I/ATLAS is the third interstellar object seen zipping through our neighborhood
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Rebecca Sear @rebeccasear.bsky.social · 16/06/2025
“Historically, no one lived past age 35” "I’ve heard *so* many versions of this claim, including recently from a menopause doctor (implying menopause is not “natural” because noone lived long enough to go through it). Every time someone states this “fact,” a demographer loses a piece of their soul"
jenndowd.substack.com
There Were Still Old People When Life Expectancy Was 35.
A demography myth that won't die
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Journal of Art in Society @artinsociety.bsky.social · 31/05/2025
Forget all the annoying stuff in the world for a few seconds and enjoy the natural beauty of Brazil’s Seven-coloured Tanager (Tangara fastuosa) Photo: Luiz Cavalcanti Damasceno
small pert bird perches on wire fencing, black eye and bill, with feathers in shades of blue, purple, yellow & orange
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Randall Munroe @xkcd.com · 29/05/2025
Mass Spec xkcd.com/3094/
[Person with ponytail wearing lab coat hands balloon to another person in front of a springboard, a magnet hanging from above, and then a target] PERSON WITH PONYTAIL to Person 2: Rub this balloon against your head, then go jump past that magnet toward the target on the wall. [caption] Before the bathroom scale was invented, the only way to weigh people was mass spectrometry.
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Fr. Robert Ballecer, SJ @padresj.bsky.social · 25/05/2025
When you walk into work in the morning, dangerously low on caffeine, and the office Karen is already at 11. 😂
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Gene Repórter @genereporter.bsky.social · 25/05/2025
"O que é divulgação científica? Resposta de biólogos*? Depende." genereporter.blogspot.com/2025/05/o-qu...
genereporter.blogspot.com
O que é divulgação científica? Resposta de biólogos*? Depende.
Saiu um artigo do Prof. Dr. Marcelo Valério , docente da UFPR , com que tive a honra de colaborar, de revisão conceitual e proposta de defin...
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Roberto Baginski @rbbs.bsky.social · 19/04/2025
g1.globo.com/ciencia/noti...
g1.globo.com
Vida em outro planeta? O que se sabe sobre planeta K2-18 b
Cientistas usando o telescópio espacial James Webb obtiveram o que chamam de sinais mais fortes até agora de possível vida fora da Terra.
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Brent Toderian @brenttoderian.bsky.social · 13/04/2025
“In Finland, the number of homeless people has fallen sharply. Those affected receive a small apartment & counselling with no preconditions. 4 out of 5 people affected make their way back into a stable life. And all this is CHEAPER than accepting homelessness.” It costs less to house people.
thebetter.news
Finland ends homelessness and provides shelter for all in need - scoop.me
In Finland, the number of homeless people has fallen sharply. Why? The country applies the "Housing First" concept agains homelessness.
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Moudhy Al-Rashid (she/her) @moudhy.bsky.social · 10/04/2025
"Stop procrastinating" in cuneiform: "Why don't you write your tablet and do your homework? If you don't, they will say: "Is *this* the sister of Sheru'a-eṭirat, eldest daughter of the Succession Palace of Ashur-etel-ilani-mukinni, the great king, mighty king, king of the world, king of Assyria?"
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