FoxQuirk 🦊 @quirk@computerfairi.es

”Going into schools, I meet thousands of children a year and every day I become more certain that, if justice for all is to be our organising principle, AI is not for children and not for young people. … It risks halting learning before it can take flight. Studies show, over and over, that when we engage in AI-assisted learning we give up sooner. … We undergo not just cognitive offloading, but cognitive surrender: we forget what was possible.”
—K. Rundell
https://www.theguardian.com/books/ng-interactive/2026/aug/08/i-hate-what-ai-is-doing-to-the-minds-and-happiness-of-the-young-katherine-rundell-on-the-view-from-the-classroom
#ai #learning

MEMENTO MORI

guitar strings are a cruel reminder of mortality

@foone so, antennas need to radiate photons. An antenna is "just" an arrangement of components that turns a changing electrical stimulus into enough of an electric/magnetic field flux that it emits photons.

Anything can radiate photons. Yes, people have hooked up bed springs and lightbulbs to HF radios to emit shortwave frequencies.

It's a question of what's in phase, what's out of phase, and how much is radiated versus reflected back down the antenna versus converted into heat.

(ctd)

maybe it's just more/less coiled? in which case... why?

I know it's folly to try to understand RF, which is all obscure magic, but one part I thought I understood was that frequency and antenna size were correlated, right?

but I got a pile of 433mhz transmitters and receivers, which have different sized antennas.

Isn't transmitting and receiving symmetric? wouldn't you need the same size antennas?