Joost Rekveld

#sudcharente

A 1925 textbook on industrial electricity.

#sudcharente #systemsThatMatter #ac

#charente

#sudcharente

From 2015, an amazing book that collided with my orbit at exactly the right time right now.

#JasonWMoore #systemsThatMatter #sudCharente

while tech bros and armchair philosophers contemplate rights for hypothetical conscious machines, the reality is that actual people (labourers) are treated worse than exiting machines

#sudcharente

Distributed spider meets distributed snail meets distributed human.

#systemsThatMatter #sudCharente

#sudcharente

Cybernetic icon spotted in the wild: the "governor" of the engine from the previous post.

#cybernetics #governor #sudcharente

In a village nearby: a 'locomobile', a steam engine on wheels that can power various agricultural machines, this model was introduced in 1897.

#sudcharente #locomobile

The perfect companion to the French countryside.

#historyOfChemistry #systemsThatMatter #sudCharente #howDidWeGetHere

#sudcharente

15th century.

#sudcharente #blanzac

#sudcharente

Great to see it in your hands, curious what you think of it !

Detail of crystallisations on a vase by Alfred Renoleau, early 20th centure ceramicist in Angoulême.

#crystalFarming #Angoulême #charente

La pêcheplosion !

#sudcharente

The beautiful Tâhir peşrev composed by Sâlih Dede Efendi (?-1888), the master of peşrevs.

#SâlihDedeEfendi #TâhirMakamı

that's what it is !

bsky.app/profile/joos...

Evaporating pcb traces turned out to be a symptom of a failing rectifier and the latest update is that this may not be the end either.

#analogElectronics #79 #SystemsThatMatter

I don't think mathematicians who use or promote LLMs are, on the whole, worried enough about the extent this applies to them

There are 12 transistors in those output amplifiers and it is a bit of a puzzle to try and understand which one is the cause of the problems.

#Tektronix #79 #SystemsThatMatter

Was able to repair two of my five broken-and-fragile-but-still-great FG504 Tektronix signal generators. I repaired a third but then it grew a new problem in the output amplifier similar to the problem also shown by a fourth.

This week I was experimenting with a principle that was explained for the first time *exactly* a century ago, to the day.

#PiezoCrystals #ErichGiebe #AdolfScheibe #79 #SystemsThatMatter

About five years ago I had six working Tektronix FG504 signal generators, after finding eight, with only one working as-found. They are fantastic but also fragile: yesterday I was again down to only one working generator: time to start on those postponed repairs.

#Tektronix #79 #SystemsThatMatter

despite popular beliefs, incorporating "AI" in workflows does NOT reduce time.

"when developers use AI tools, they take 19% longer than without—AI makes them slower"

metr.org/blog/2025-07...

the stark difference between forecasts and actual results in the plot is damming

I very much enjoyed being invited to review and then write about the importance of this excellent, rigorous research study.

My piece about the article below: www.nature.com/articles/d41...

A very interesting rabbit hole that opened up when I wondered when and how the piezo-electricity of ammonium dihydrogen phosphate was discovered.

#CrystalFarming #PiezoCrystals #79 #SystemsThatMatter

Today in vector space, we’re experiencing an inversion bloom—a rare event where dimensional anchors loosen and entire landscapes of thought rise like mist from a cooling field. Gravity seems optional, but not absent.