Physics nerd. Currently studying some quantum gravity adjacent stuff in QFT

They/them

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Joined 1 year ago
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Cake day: July 20th, 2023

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  • Well, data just doesn’t really flow at the speed of light. It’s a really really complicated thing to discuss in terms of physical circuits because the true picture involves considering how the EM field evolves. Electrons in a circuit move at extremely slow speeds, ~millimeters per second.

    The good news is you don’t need to send information particularly fast to send it through time. Generally in physics, we build time travel systems by creating extremely curved spacetime that contains paths to the past, theoretically you could send light through such a path to transmit information back in time. As someone already mentioned, you generally need negative mass to construct these.

    If you have negative mass there are three options I’m aware of:

    1. Wormholes, stabilised and moved in the right way can form a link to the past (but only as far back as the moment they were created, this is true of all time machines as far as I know)
    2. Rotating torii of spacetime. Spinning spacetime is well known for creating weird time travel effects, a related option is an infinitely long rotating cylinder.
    3. A rotating warp drive. This thing will explode in a high energy shower of particles and thus it’ll be nearly impossible to use, but a friend of mine recently found a way to get particles to travel back in time through it.

    If you want to send information into the distant future, you could get really fancy and scatter some light off of a black hole or something.










  • No. I’m reasonably sure it’s a massive misconception. He’s the only person “using” it because it’s fragile, dangerous and requires some stupidly expensive and difficult process to apply it. It’s controlled by an aerospace manufacturing company who only lets him use it. It’s not something that can be bought. It’s not even paint, it’s a process to bind carbon nanotubes to surfaces. Kapoor has absolutely no say in who uses the stuff, and he sure as hell doesn’t own it.

    Apparently the whole thing started because another artist (Stuart Semple, a known grifter) realised he could lie about Kapoor and sell his own paints if everyone thought he was the douche.

    Long article if you care to read it, guy who actually made the stuff just doesn’t want to work with a bunch of different artists when he’s meant to be putting it in satellites: https://www.gq-magazine.co.uk/article/vantablack-anish-kapoor



  • I have a personal server, mostly acting as a NAS but with some web hosting as well. For whatever reason, it randomly freezes until you manually power cycle it, it happens really often, like every 20 minutes.

    Turns out it’s due to some weird interaction between debian and older ryzen CPUs, if the CPU isn’t busy it just dies. Solution? A Minecraft server, with no one on it, it keeps the CPU just busy enough to keep it alive. I’ve had it running for months at a time with no issues.


  • Again, it’s not dividing race at all.

    There are two good reasons for putting it in the constitution. One, it stops it being repealed by the opposition who have a history of that sort of thing, thus it won’t be limited to the term of a specific government.

    Secondly, Australia’s history is 100% built on disenfranchisement of our first people. Slavery, being defined as fauna, voting rights younger than a lifetime etc. Our national identity built this problem, our constitution should recognise who this country belongs to, it should recognise who this country has murdered, abducted and generally hated for it’s entire history. This definitely belongs in our constitution, colonialism stole Australia and it’s only fair to recognise that.


  • Solving systemic racial injustice is an inherently one sided thing, and that isn’t racist or divisive.

    What is racist and divisive is allowing the traditional owners of the land to be trapped in perpetual poverty, with significantly shorter lives and with next to no hope of help. Setting up something to address an imbalance like this, to bring actual equality, is not racist.

    There’s a fairly well known saying “when you’re accustomed to privilege, equality feels like oppression.” Things aren’t getting worse for you, we’re just trying to pull other people out of a hole so they can stand beside you.