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@ rtxn @lemmy.world

Posts
9
Comments
479
Joined
3 yr. ago

Partisanship is a cancer. Inaction is a choice.

Singular they. Or whatever you like, I won't take offence.Proud member of the Banned By Tesseract Club.

  • If something is Nuclear enough it can generate heat

    That's an extreme oversimplification. RTGs don't use nuclear waste. Spent reactor fuel still emits a large amount of gamma and neutron radiation, but not with enough intensity to be useful in a reactor. The amount of shielding required makes any kind of non-terrestrial application impossible.

    The most common RTG fuel is plutonium (238Pu, usually as PuO2), which emits mostly alpha and beta particles, and can be used with minimal shielding. It can't be produced by reprocessing spent reactor fuel. In 2024, only Russia is manufacturing it. Polonium (210Po) is also an excellent fuel with a very high energy density, but it has a prohibitively short half-life of just over a hundred days. It also has to be manufactured and can't be extracted.

    90Sr (strontium) can be extracted from nuclear fuel, and was used by early Soviet RTGs, but only terrestrially because the gamma emission requires heavy shielding. Strontium is also a very reactive alkaline metal. It isn't used as RTG fuel today.

  • It's all fun and games until somebody mixes up pinus contorta with the ol' dick twist.

  • I'm both fat and tall. None of my fucking clothes have consistent sizes that fit. I'm not the least bit surprised that the clothing industry's greatest minds were defeated by breasts.

  • Visual Studio for live .NET debugging and the WPF live editor.

  • Leaded fuel. Avgas is 100-octane leaded gasoline that is still being used by most small aircraft piston engines. Lead-free alternatives exist, but production and supply infrastructure is nonexistent.

  • You'll encounter math eventually. It could be as simple as implementing linear interpolation for a custom type, or understanding why a type is not suited for a particular application (e.g. never use floating points to represent money). If you delve into low-level networking, you'll need a good understanding of binary/decimal/hexadecimal conversions and operations. If you go into game development or graphics, you won't survive without a deep understanding of vectors, matrices, and quaternions. Any kind of data science is just math translated to a machine-readable language.

    In my opinion, knowledge of the basic concepts is more important than being good at actually performing mathematics with pen and paper. For example, if you need to apply a transformation to a vector, nobody expects you to whip up a program that does the thing. Instead, you should immediately know:

    • what a transformation is (translation, rotation, scaling, projection, etc),
    • that each transformation has a corresponding transformation matrix,
    • that you'll have to deal with inhomogeneous and homogeneous coordinates, and
    • that you'll have to combine the transformation matrices and the original vector.

    That abstract knowledge will give you a starting point. Then you can look up the particulars -- the corresponding transformation matrices, the method to convert between inhomogeneous and homogeneous coordinates, and the process of matrix multiplication. I know because I failed calculus.

  • I despise micro-USB with a passion. Even more than mini-USB. It is so flimsy, it's always been the first thing to die on my wireless devices, including my older phones.

    If a device charges through USB, I consider not having USB-C to be a deal breaker. Right now I'm waiting for a USB-C socket breakout panel because I want to convert my Xbox One controller from micro to C.

  • I'd be very concerned about the state and safety of those rails.

  • It's not markdown, those are different unicode characters. https://cursivegenerator.net/

    By the way, you can view the markdown source of comments and text posts. There's a "view source" button that looks like a document icon on the stock Lemmy UI.

  • The virgin .NET:

     c#
        
    Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.InvariantCulture;
    Thread.CurrentThread.CurrentUICulture = System.Globalization.CultureInfo.InvariantCulture;
    
      

    The chad POSIX: LANG=C

  • You can call it 𝓜𝓮𝓻𝓭𝓮, but it'll still taste like shit.

  • Woah, tone down that rhetoric, Yosif!

    /s

  • Self-hosters:

  • Thanks, but that's the same one that I found. It removes the power button from the start menu and disables the shutdown command, but the computer still responds to ACPI and even the keyboard's power-off button.

  • It makes sense if you represent complex numbers as (a, b) pairs, where a is the real part and b is the imaginary part (just like the popular a + bi representation that can be expanded to a * (1, 0) + b * (0, 1)). AB's length is (1, 0), AC's length is (0, 1), and BC's length will also be a complex number.

    I think.

  • There are use-cases where a computer should not be turned off by its user for the purpose of remote management. I'm dealing with one just as I'm writing this comment.

    There's an exam in a classroom. In 20 minutes I'll have to run an ansible script to remove this group's work, clean up the project directory, and rollback two VMs to the prepared snapshot to get ready for the next group. I've put a big-ass banner on the wallpaper telling the students not to shut down the computer, and already half of them are off.