“Supersósolido”
🚨 ÚLTIMA HORA: Por primera vez, científicos italianos del CNR lograron que la luz se comporte como un sólido (¡un supersólido fotónico!).
Publicado en Nature (5 marzo 2025): crearon un estado exótico donde la luz tiene estructura cristalina rígida y fluye sin fricción.
Lo hicieron con polaritones (híbridos luz-materia) en un cristal fotónico de semiconductor. Los polaritones formaron un condensado cuántico que se organiza como un cristal pero se mueve como superfluido.
No es “congelar” la luz literal en el vacío, sino hacer que exhiba propiedades de materia sólida y líquida al mismo tiempo. Un avance en física cuántica que abre puertas a nueva fotónica y computación óptica.
Paper: “Emerging supersolidity in photonic-crystal polariton condensates” (DOI: 10.1038/s41586-025-08616-9).
¡La frontera entre luz y materia se difumina! ¿Revolucionario? 🔥
#Ciencia #FísicaCuántica #Nature #Supersólido
🚨🇮🇱 EL MOSSAD HA SIDO HACKEADO 🇮🇱🚨
Un grupo d hackers autodenominado «Anonymous for Justice» afirma haber hackeado bases d datos,laboratorios y planos d armas israelíes.
El grupo también publicó archivos con documentos y fotos q pertenecen a oficiales y científicos israelíes.
I watched a junior admin fix a permission error.
He logged into the server.
He ran chmod 777 /var/app.
The error stopped.
He shrugged and said it just needed to work.
I asked him if he enjoyed living dangerously or just hated the principle of least privilege.
He looked confused and said chmod 777 was standard for dev.
I told him 777 means anyone can write. A typo in the wrong directory and the whole server is compromised. He wouldn't know which user actually needed access.
I showed him ls -la.
The file was owned by the wrong user. chown fixed it without 777.
I told him chmod 777 costs us a compliance violation waiting to happen.
I made him recite the principle of least privilege before lunch for a week.
Hoy hablaremos de la importancia de los algoritmos y HASH en las agregaciones de enlaces (LAG), y de paso, desmitificaremos eso de que los enlaces se "suman", ya que sí... pero no... aunque puede... con matices... 🥳
super🧶, ponte cómodo/a...
More languages, more insights!
A few interesting takeaways:
* Java and Kotlin are quick! Possible explanation: Google is heavily invested in performance here.
* Js is really fast as far as interpreted / jit languages go.
* Python is quite slow without things like PyPy.
𝐖𝐡𝐚𝐭 𝐀𝐫𝐞 𝐭𝐡𝐞 𝐆𝐫𝐞𝐞𝐧𝐞𝐬𝐭 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬?
The study below runs 10 benchmark problems in 28 languages [1]. It measures the runtime, memory usage, and energy consumption of each language. The abstract of the paper is shown below.
“This paper presents a study of the runtime, memory usage and energy consumption of twenty seven well-known software languages. We monitor the performance of such languages using ten different programming problems, expressed in each of the languages. Our results show interesting findings, such as, slower/faster languages consuming less/more energy, and how memory usage influences energy consumption. We show how to use our results to provide software engineers support to decide which language to use when energy efficiency is a concern”. [2]
𝐌𝐨𝐬𝐭 𝐞𝐧𝐯𝐢𝐫𝐨𝐧𝐦𝐞𝐧𝐭𝐚𝐥𝐥𝐲 𝐟𝐫𝐢𝐞𝐧𝐝𝐥𝐲 𝐥𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬: 𝐂, 𝐑𝐮𝐬𝐭, 𝐚𝐧𝐝 𝐂++
𝐋𝐞𝐚𝐬𝐭 𝐞𝐧𝐯𝐢𝐫𝐨𝐧𝐦𝐞𝐧𝐭𝐚𝐥𝐥𝐲-𝐟𝐫𝐢𝐞𝐧𝐝𝐥𝐲 𝐥𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬: 𝐑𝐮𝐛𝐲, 𝐏𝐲𝐭𝐡𝐨𝐧, 𝐏𝐞𝐫𝐥
[1] https://t.co/rPD6Sw5mJn
[2] https://t.co/TDM72hEci4
Over to you: What do you think of the accuracy of this analysis?
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Hay equipo, recuerden la seguridad es lo más importante, tanto para sus criptos como para las aplicaciones de su vida diaria!!!!!
Dos @Ledger X (uno de backup)
Dos @Trezor T y One (uno de backup)
Dos @Yubico (siempre dos)
Las Yubikey protegen cuentas de: ICloud, Gmail, Protonmail, Twitter, @binance, @okx y @Bitwarden@Authy queda para la cuentas que no aceptan llaves físicas.
No puede faltar la multisig, en mi caso elegí @safe
Y por supuesto las seed en papel 😉