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Cake day: June 12th, 2023

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  • If you fully submerge an object, you displace its VOLUME of water. It will always be the same amount (imagine a bowling ball and a soccer ball). You might need to push it.

    When you relate that to its weight, you get the density.

    Imagine you have two 1kg lumps of steel. Out of one you make a bowl with thin walls the out of the other a metal ball. Afterwards they still have (about) the same weight, volume and density - as it’s still steel.

    But put the bowl onto the basin and with a little luck it will float like a boat *, put in the steel ball it will sink.

    But when you put in the bowl sideways without splashing it will displace about the same amount of water than the ball. And it will still weigh 1kg.

    *= The thing with floating people remember from school: The floating bowl will displace as much water as it weighs - that’s the thing Archimedes found out. So our 1kg bowl will displace 1kg of water - which is incidentally about 1 liter, because the density of water is about 1kg/l (it was intentionally defined that way, some guys in the French revolution used water to define mass by volume)



  • froh42@lemmy.worldtomemes@lemmy.worldOK
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    13 days ago

    This test diagnosed me as 20% German (haben die Lack gesoffen?) and 40% Autistic - which I feel should also a bit higher for the overlap of some symptoms of ADHD and autism.

    Scheißtest. And it hasn’t the obligatory humor markers that are required on humor on the internet by the Digitalhumorerkennungsvorschrift, so I’m not even sure if I should laugh or not.






  • Last year I was reading a bit about Mozilla, all that google money, their spendings, their CEO and got really really angry looking on how shit the Firefox is I use daily.

    The reason Firefox still exists is that Google can prove it’s not a Chrome monopoly. Now this is just me forming conspiracy theories, but I do believe that Google would stop these payments the day Firefox would really out-innovate Chrome and get more market share.

    I do believe all that Google money is not keeping Firefox alive, it’s keeping it dead.

    At that moment I rage-donated money to Servo. Monthly. Didn’t regret it, yet. Found their transparency records what they use it for. Up to now they use their money very responsibly.


  • I’m not a Playstation fan, I just want to play on the sofa, so I bought it just for that. It was a PS1, PS3, PS4, PS5… ooh wait, in fact I did have nearly all of them

    PS6? No way. For me the PS always was a good offer for couch gaming.

    Unless Sony changes course, a future PS6 looks mighty unattractive, price and usage-wise.

    My next “console” will be something with Steamos or Bazzite or any wine/proton install. Maybe something that I can also use for running LLMs when I work.

    If memory wasn’t so expensive, I’d already have ordered a 128G Strix Halo box (good enough for most games, good enough for a lot of local models)


  • it was an old mechanism in Unix & Linux that flushed “disk writes” to disk. Writes would normally go to the buffer cache in ram and a process called “sync” every 30s to flush out writes to disk. (writing out EVERY change would result in a lot of redundant writes and be very slow, so this was a very simple kind of collecting work until it makes sense to really do it)

    We still write async writes to ram first and then write them to disk later, the mechanism is much more advanced nowadays - and also quicker to start writing.

    Still, on the shell there’s a command called sync which invokes the system call, asking the kernel to flush out all asynchronous writtes.

    (And yes, there’s more than async writes, used by databases for example, but that would require a lot more of explanations)


  • Amazing. I did the same on my 2012 macbook air, and a friend’s Asus notebook. My 2019 Lenovo is still going strong, I expect to get 10y of lifetime out of it. Oh, and Lenovo spare parts are dime a dozen. I have rebuilt old Lenovos multiple times in my life, typically by buying a broken donor machine.

    So exactly what is the business case for buying a Framework Notebook?

    (Yes, they are really beautiful, cool and I’d WANT one. But there always was a better option to buy, for one reason - price: used Lenovo, portability: MacBook Air)



  • I still remember when I managed to rm -rf / foo (I accidentally typed a space between / and foo) on my very early linux box on the 90s. 80486, 16 mb

    I pressed enter. Saw what I did. Remembered that sync ran at every 30s* Pressed the power button.

    *= those were simple times, but not better times

    So I rm -rf ed my root fs and my box survived it due to the quick power off.







  • Ok, but please DO NOT EVER go down to pure energy. Last time I did this, my experiment exploded, now it takes a whole lotta space, complex atoms and life and all the shit along with more or less intelligence. I’d feel really bad to shut it all down now, so I let it just run on its own.