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Cake day: March 23rd, 2025

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  • It’s a broadband bang that can be heard across the whole spectrum. It becomes audible when listening to radio broadcasts.

    Regular radio transmissions are comparatively narrow band, allowing lots of simultaneous transmissions in the same airspace, each on its own frequency. The spark gap transistor is very wide band, so it basically sounds as if you are sending a bang sound across all radio frequencies at the same time.

    It wouldn’t destroy radio equipment, but the radio transmissions. It’s basically as if you’d use a radio jammer as a morse code transmitter.




  • Pretty much the first type of commercially viable radio transmitter was the spark-gap transmitter (“Knallfunkensender” in German). It worked by charging up some capacitors to up to 100kV and then letting them spark. This spark sent a massive banging noise on the whole radio spectrum, which could then be turned into an audible noise using a very simple receiver. That was then used to send morse codes (or similar encodings).

    They went into service around 1900, and by 1920 it was illegal to use these because they would disrupt any and all other radio transmissions in the area with a massive loud bang.


  • This.

    There are often actual limits to what can be done, and there are practical limits. Especially in the early days of a technology it’s really hard to understand which limits are actual limits, practical limits or only short-term limits.

    For example, in the 1800s, people thought that going faster than 30km/h would pose permanent health risks and wouldn’t be practical at all. We now know that 30km/h isn’t fast at all, but we do know that 1300km/h is pretty much the hard speed limit for land travel and that 200-300km/h is the practical limit for land travel (above that it becomes so power-inefficient and so dangerous that there’s hardly a point).

    So when looking at the technology in an early state, it’s really hard to know what kind of limit you have hit.









  • This.

    There are very many shades of “I can’t leave”.

    • I can’t leave because I would lose money/friends/job
    • I can’t leave because I’d have to rebuild everything.
    • I can’t leave because I can’t afford to bring all my stuff.
    • I can’t leave because I physically don’t have the money for a plane ticket, a passport and the immigration process and I’d have to take out a loan
    • I can’t leave because I don’t have the money for the plane ticket, a passport and the immigration process and I cannot take out a loan

    Depending on how urgently you want to leave, some of these reasons are “can’t leave” or turn into “I’ll leave anyway”.


  • It’s not all quite as rosy.

    Yes, Linux is much more capable now than it was 10 years ago and it’s much more capable of being used as a main system. I myself have been using Linux as my main system for a few years now.

    But it’s also a fact that a lot of stuff might not work (even if it works for someone else) and that some things are still more difficult than they should be.

    For example, on my laptop cannot wake from sleep since kernel 6.11. I have manually sourced a 6.10 from an older version of my distro and keep holding it back, so that I can use my laptop as a laptop. For someone without technical skill, this would mean that their laptop just can’t sleep any more. Hibernate also doesn’t work.

    Another example is that LibreOffice still makes a lot of formatting mistakes when it has to open word documents. And sure, everyone could just switch to odf, but it’s not quite as easy to make everyone else switch to odf. It makes it really hard to use LibreOffice in any kind of professional environment. Wouldn’t want to make a powerpoint presentation that then looks like shit when it’s played on a different PC.

    Lastly, Nvidia sucks, but it’s also close to the only option for laptops with dGPUs. When I look for laptops with dGPUs available in my area on a price comparison platform, I find 760 laptops with Nvidia GPUs and only 3 with AMD, all of which are priced at least €500 more than comparable Nvidia devices. So if you want to go for a gaming laptop, Nvidia is pretty much the only option, and under Linux it really sucks. Steam games generally work ok for me, but trying to use Heroic Launcher to play anything from my gigantic library of free Epic/Amazon/GoG games, about 10% of the games I tried actually work. And even with those that work, my laptop sometimes just decides that a slide show with 3 FPS is good enough. That stays even after reboots and resets, and after a few days it returns to normal. Only to go back to slideshow mode a few days later.

    If you just use your laptop to run a browser, I can recommend Linux 100%.

    If you want to do anything else and don’t have any technical skills and/or don’t want to spend hours fixing things that should just work, I can’t fully recommend it.