[–] 2 points 2 hours ago*

Well, the 48V accessory system instead of 12V is also a good idea. Lets you use much lighter wires to carry the same loads, just requires components practically no one is making compared to 12V. But it would be a good thing for all cars to go to. Would save a some weight and a lot of materials.

But that's about it.

  • source
  • parent
  • context
  • [–] 1 point 2 weeks ago

    I mean, they are airing ads about using their AI like a personal assistant, including to pay bills. So not just knowing financial details, literal approval to spend your money for you. I hope not many people are doing that, but I'm sure some are. Absolutely insane.

  • source
  • parent
  • context
  • [–] 3 points 3 weeks ago (1 child)

    Of course it isn't an energy multiplier. The energy carried as the bullet leaves the barrel will be very very close to the same. The energy it carries will be lost more quickly to air resistance with a less dense round though. Especially since the same powder behind less mass, means more speed, means more air resistance. How much that matters depends on a lot of factors, but it can certainly be enough to matter.

  • source
  • parent
  • context
  • [–] 18 points 3 weeks ago (10 children)

    Lead is very dense, so a bullet the same size delivers more force. Steel was an early alternative, and in addition to being less dense, it also tends not to deform into a mushroom shape during impact like lead and copper do. So a steel bullet can penetrate cleanly through a target leaving a narrower path and have a slower penetration and exit velocity, all combining to do less damage.

    The density benefit is the same reason some high end rounds use tungsten and even depleted uranium. Heavier bullets of the same size fly straighter and hit harder.

    Steel and copper also tend to cause more barrel wear than lead. Probably tungsten does too, but I don't have experience with it, let alone depleted uranium, lol.

    It's still worth switching away from lead though.

  • source
  • parent
  • context
  • [–] 2 points 3 weeks ago (1 child)

    I really need prescription lenses for the Frame, but am hesitating on which to buy.

    Zenni is Steam's recommendation, and was out of stock immediately, with no communication on future availability.

    VR Optician seems like a safe choice quality wise, but it's 3-4 weeks fabrication, then shipping from Germany and clearing customs. Also the most expensive option, but I want quality lenses and would be willing to pay appropriately. I'm just also impatient.

    AMVR is on version 2. AMVR version 1 is the only lens I can find a review of, and it wasn't favorable. The frames for the lenses for both versions are 3D printed, and apparently don't mount very securely. I have a fairly large astigmatism in my dominant eye, so the lens potentially rotating a bit from where it is supposed to be is a significant downside.

    VR-rock is suspicious. Using some pics from the quest, and not very clear about how they are mounted. For other headsets they have a magnetically mounted lens option, which I would go for, but it looks like that isn't available for the Frame, at least right now.

    Anybody who has already gotten a pair of Rx lenses?

  • source
  • view more: next ›