Do you think agents ask eachother how their weekend was?

Vi este mural hoy en la Universidad Nacional y casi que me pongo a llorar de emoción @ringo_ring

You've seen this image do the rounds. The story goes Gas turbines blades - 5 years booked - single crystal blade technology - only 3 companies etc. Yes & No. Here's a no nonsense, first principles breakdown: Firstly, Single crystal blades are used in a gas turbines (power) or a jet engines SPECIFICALLY where temperatures exceed 1,600°C A single crystal blade is a piece of metal made of one continuous grain of nickel superalloy. No grain boundaries, no weak seams. That is why it can survive 1,600°C gas at 10,000 g of centrifugal force for 30 years. But SC blades for Jet engines vs power turbines are very different. Same process but very different. In a jet engine, the single-crystal blade is the Stage 1 rotor of the high-pressure turbine. It is roughly 10 centimetres long and weighs a few hundred grams. It spins at 15,000 to 20,000 RPM. It runs in cycles, takeoff to landing, ten times a day. What kills a jet blade is fatigue i.e - The slow weakening of metal under repeated cycles of stress and temperature change. A power turbine Stage 1 blade is roughly 20 to 30 centimetres long, including the root and shank. It weighs 1.5 to 5 kilograms It spins at a steady 3,000 to 3,600 RPM. It does not cycle, it sits in 1,600°C gas continuously for months. What kills a power turbine blade is creep i.e - The slow stretching of metal under continuous heat and centrifugal force, year after year. Different killer = different alloy. Power turbine blades carry more rhenium for creep resistance. AND Different size means different physics. Growing a defect-free single grain through a 30 cm volume is multiple times harder than through a 10 cm one. Casting yields are lower. That's WHY the number of facilities that can do IGT-grade SC reliably is much smaller than the number that can do aero-grade. EVEN Within gas turbines we have F-class, H-class, J-class and theese Gas turbines for power generation are sorted by firing temperature. Meaning, higher firing temperature means higher efficiency, which means more electricity per cubic metre of gas. 1. F-class (mature, 1990s onwards) fire at around 1,300°C with combined-cycle efficiency of 58 to 60%. 2. H-class / HA-class (2000s onwards) fire at 1,450 to 1,500°C with combined-cycle efficiency of 60 to 63%. 3. J-class / JAC-class fire at around 1,600°C with combined-cycle efficiency of 63 to 64%, using rhenium-rich alloys at the absolute limit of metallurgy. As firing temperature rises, the metallurgy gets harder. The reason customers want H and J, not F is that each generation jump cuts fuel cost by 5 to 8% per MWh. For a 1 GW base-load plant, that is over ~₹1,000 crore in fuel savings every year. Every utility, hyperscaler, and LNG developer specifying new capacity wants H-class or J-class, not F. WHERE IS THE BOTTLENECK TODAY FOR GAS TURBINES? F-class capacity has plenty of headroom. Customers do not want F. H-class and J-class capacity are the constrained ones. Howmet's IGT-grade Stage 1 single-crystal line for H and J class is sold out. The in-house casting lines at GE Auburn, Siemens Berlin, and MHI Takasago are sold out. WHO CAN ACTUALLY MAKE THEM? For aero, capable countries number about 8. For heavy-duty power turbines, the commercial club drops to 3 as far as ROW is concerned. GE Vernova in the US, Siemens Energy in Germany, Mitsubishi Power in Japan China & Russia have turbines that perform with varying performance parameters. Hope this was insightful. If you're still reading. follow and repost. Tc.

🇸🇮 𝑰𝑳 𝑷𝑶𝑮𝑰 𝑫𝑰 𝑺𝑨𝑵𝑹𝑬𝑴𝑶 #MilanoSanremo @CA_Ita

Paris boosting property values and quality of life merely by making streets traffic free

Someone very kindly make a 3D printed version of the Tempest Euro (STARKVIND) available. makerworld.com/en/models/247… (The name use is fine there, I just have to keep it down on social media)

I’m pleased to announce the results of the 2025 State of Clojure Survey! Our 15th edition! Each year, the Clojure community shares about themselves, how they use Clojure, their favorite things, and more. See the highlights, and get the full results at: clojure.org/news/2026/02/18/…

Corpi paramilitari composti da: ~ Veterani arruolati rapidamente ~ Reclute improvvisate senza addestramento adeguato ~ Finanziamento abbondante dal governo ~ Immunità di fatto per le violenze commesse No, non parlo di ICE. Stavo ricordando i Freikorps nella Germania post-Prima Guerra Mondiale (1918-1923).

"Terrible things are happening outside. Poor helpless people are being dragged out of their homes. Families are torn apart. Men, women, and children are separated. Children come home from school to find that their parents have disappeared." Diary of Anne Frank January 13, 1943

> Tailwind lays of 75% of their team because of AI as they underwent a 80% revenue loss > 24 hours later sponsors arrive from big places internet is good

“Europe needs a declaration of independence”. Italy's leading newspaper with a bold call for a United States of Europe. Co-signed by Slavoj Zizek and 53 other prominent Europeans. It calls for treaty reform NOW 🇪🇺

People overestimate what they can do with their health in a month, and underestimate what they can do in a year.

Academic publishing is perhaps the greatest scam perpetrated on intelligent people 1) Write grants (unpaid) 2) Do research 3) Write papers 4) Peer review (unpaid) 5) PAY up to $12K to publish 6) Need publications to get grants (back to step 1) Publishers: 38% profit margins

A little neck repair for this lovely wool sweater! No need to replace something because of a small hole, when you can repair it and give it a new lease of life! #visiblemending #repair #darning #reducewaste #sustainableliving

Yesterday was the last day an AOL modem picked up the line for a dialup customer to log in to the Internet. It is an end of an era and frankly a few hundred still used the service knowingly. I still have a BBS running for dialup AI and Bitcoin access.

I read of the dead trees in the biosphere 35 years ago. Tho not overly intriguing, it remained on my mental microfiche. Now, I find it perplexing how such knowledge, the reaction to stimulus & the necessity of stimulus, is stored in cellular structure.

“The ideal subject of totalitarian rule is not the convinced Nazi or the convinced Communist, but people for whom the distinction between fact and fiction and the distinction between true and false no longer exist.” ― Hannah Arendt, The Origins of Totalitarianism

Everyone needs to be a bit more like Diocletian

NY City's congestion charge after one month: 👻 1 Million cars disappeared ⌚️ Rush hour traffic delays down 59% 🚍 Bus ridership up 6-21% 🚇 Metro ridership up 7-12% 💰 Expected daily revenue of 3 Million $ ♥️ 'We love it!' Source: fastcompany.com/91272434/a-m…

Oh no we hate all these parenthesis (from the clojure haters), in the meanwhile I opened a random OSS rust project and saw this