Avslutat föreläsning i Uppsala, i multipolutveckling av potentialer i teoretisk elektroteknik. Skärpta andraårsteknologer på teknisk fysik. Det finns gott om hopp för framtiden med den generationen!

Årets kvalitetsauktion i Gotlands Radioamatörklubb är igång! Själv har just ropat in en Drake R7A i fint skick. Perfekt SAQ-mottagare! Ping @hc_becker #föreningsliv #hamradio

The tragicomic part of the russian/soviet word ”мир” (”mir”) is its dual meaning of ”peace” and ”world”, with the latter all too often being interpreted by the russians as ”our russian world”. #SlavaUkraïni 🇺🇦

Being an avid fan of version control systems like CVS or Git, it is for sure a fresh experience using Overleaf with multiple authors working on the same document simultaneously. In this case watching the real-time editing by my thesis workers on their report on partial coherence.

EPA-kulturen ändå. ❤️

På väg mot Fårö för 70-årskalas!

Tävling i militär snabbmatch i Slite PK ikväll. Spridda skurar i träffbilden men riktigt kul. #föreningsliv

Min egen ödmjukhet förbjuder mig att nämna namnet på fotografen som tagit detta eminenta omslagsfoto på Gotlands Radioamatörklubb SK1BL. Sveriges bästa förening! #föreningsliv #hamradio

Ge blod du också. #blodgivare

I’m usually an avid proponent of using plain TeX (not LaTeX), just the way D. E. Knuth himself always intended, but frankly - the verbatim import of code into documents is a real pa*n in the *rse. No gentle way of putting this. Macros finally in place though. #TeX #TeamEmacs

Dirac Quantization Condition ✍️ Paul Dirac was a brilliant physicist who noticed something strange about the universe. Every charged particle carries charge in exact whole numbers, never fractions or random values. Nobody could explain why. In 1931, Dirac had a radical idea: what if a particle existed that was just a lone magnetic pole, like a north pole without a south pole? We call this a magnetic monopole. Using quantum mechanics, he showed that if even one of these monopoles existed anywhere in the universe, it would force every electric charge everywhere to fall into neat, whole-number values. This happens because quantum mechanics requires particles to behave consistently when they travel around a monopole. The only way to guarantee that consistency is if charges come in discrete, organized steps. So one single magnetic monopole, just one anywhere in the entire cosmos, would explain why all charge in the universe is quantized. The remarkable thing is that no one has ever actually found a magnetic monopole. Yet the idea remains one of the most elegant in all of physics, as it takes one of nature's deepest mysteries and solves it with a single beautiful logical argument.

Fixed it!

Somewhat interesting that the recently published ”Magnifica humanitas”, the first encyclical of Pope Leo XIV, on ”preserving the human person in the age of artificial intelligence”, quotes J.R.R. Tolkien but neither ’Blade Runner’ nor ’The Terminator’. vatican.va/content/leo-xiv/e…

A 1972 promotional photograph for the Hewlett-Packard HP-35, featuring Karen Cambria, an HP employee from the Automatic Measurement Division. Shot by photographer Norton Pearl in early 1972. #RPN #JanŁukasiewicz

Seriematch Slite mot När ikväll. Som alltid trevlig stämning. #föreningsliv

Se vad brevbäraren hade med sig! Verkar vara en riktigt trevlig årsbok 2026-27, @MatsDjurberg och @Sjohistoriska!

Måndag kväll och lite zen-meditation i Slite PK. #föreningsliv

Igor and Vera Stravinsky playing Scrabble at home in Hollywood, California, 1967.