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Pole user rule
  • In an unarmored context, which applied very often throughout history, the spear is easier to use and especially lighter, which makes it a better and more nimble weapon. Spears can also be much longer than heavier pole arms whilst remaining usable, keeping the danger further away from the user

    The speed at which one can move a spear tip is impressive and getting stabbed by it has large stopping power. The spear can also parry attacks in a large sweeping area, which makes it hard for anything else than another spear to get through

    The more complex pole weapons start to shine in an armored context, where stabbing someone at the end of your long pointy stick becomes harder. Then, the hook-y, chop-y and spike-y bits of the halberd can really help tackle the armor

  • LaTeX Master Race
  • I'm sorry but you can totally control the margin size in LaTeX if you learn the right incantation

    backslash UsEpAcKaGe letterpaper H-maaaaaaargin point seventy-niiiiiine inch brackets GEOOOOOMETRY

    then you spread the entrails slightly and stab towards the sky. Really don't see what the big fuss is all about.

  • Is it possible to replace the wifi card on a Macbook pro 11,2 (Retina, 15-inch, Late 2013)? If so, are there any compatible wifi cards with open source drivers for Linux?
  • I worked on repairing Macs during that period and I suspect that no wifi card except this specific one would fit in the relevant slot of the machine.

    They weren't standard formats as far as I know and couldn't be used across models because the shape of the actual card was never the same. It's possible the connectors didn't change though, or that a third party manufacturer made new cards specifically for that model, although that seems unlikely.

    Another commenter (u/bloodfart) wrote that the connector was a standard mini pcie connector; I can't confirm but that's plausible and would mean it's a lot more likely that an upgrade may be possible

    One note of caution, it was really easy for an uninitiated repair person to sever the antenna wire from its connector when trying to disconnect or reconnect them, the cables are quite thin

  • For centuries, the only way to get purple dye in Europe was by harvesting tens of thousands of murex snails from the ocean. TIL the Mayans discovered this independently
  • I don't really have great knowledge on this topic but my understanding is that it wasn't just because it was purple, it was that the resulting purple dye was excellent; it was bright, beautiful and never faded. You can dye stuff purple with cabbage but it's just not a very good dye in those regards

  • How dense would the atmosphere need to be to result in a cataclysmic chain reaction during a nuclear explosion?
  • I don't know what chain reaction exactly they were thinking of, but from modern fusion research, I believe we can confidently say that the atmosphere would need to be interior-of-a-large-star-level dense, and even then I'm not sure you'd get nitrogen fusing with anything without a lot of hydrogen or helium around. Nitrogen-nitrogen fusion seems extremely implausible for sure

  • A cool guide for the lights!
  • Yeah I would say that one could explain the picture here

    Ultimately, the phenomenon is happening much much higher up in the atmosphere, so being a few kilometers closer vertically won't make a difference; but by being further up on the ground, you could see an aurora from further away and through a lot more molecules that could scatter non-red light

  • A cool guide for the lights!
  • That's a cool photo, thanks for sharing.

    For more context why this wouldn't be related to redshift, redshift is a concept in physics for light that's analogous to the Doppler shift for sound. The typical example of Doppler shift is the EEEEE-OO-UUUUUM sound a car makes when moving fast past you. When the car is speeding away from you, the sound pitch is noticeably lower

    Similarly, when a light emitter moves away from you at extremely fast speeds (i.e. hundreds of millions of meters or yards per second), the light you see reaching you will be shifted down in frequency, towards red in visible light. This can happen in other more complicated relativistic situations too but they are less easy to explain and also not applicable here

    I don't know why the people in the photo see this beautiful red aurora but redshift is almost certainly not a related concept here

  • InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)PH
    phcorcoran @lemmy.world
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