fox [comrade/them]

  • 0 Posts
  • 21 Comments
Joined 4 years ago
cake
Cake day: July 30th, 2021

help-circle

  • fox [comrade/them]@hexbear.nettoScience Memes@mander.xyzwell?
    link
    fedilink
    English
    arrow-up
    8
    ·
    edit-2
    13 days ago

    Firstly, a black hole isn’t an object, really. If you manage to compress enough mass in one place, gravity becomes the dominant force and the mass collapses into itself, eternally compressing and densifying. This is the singularity at the center of a black hole, and we use the term singularity because it’s describing a single unmeasurable point in spacetime.

    Next point: high gravity curves space. Light only travels in straight lines if it can get away with it, so when light bends in space it’s because the space being traversed is deformed by gravity. Like, the Earth is, as far as it cares, going in a straight line that happens to curve back to where it started. If gravity is strong enough in a region, all possible “paths” through space become bent inwards to higher gravity. Like, even a perfectly straight line away from the black hole will be forced inwards again. That’s the event horizon, the region in space around the singularity where nothing can escape anymore: all paths go deeper into the black hole.

    Third point: weird shit happens inside the event horizon. We’re well into Math now because we can’t actually see inside these things, but we can use math to theorize and describe the inside of a black hole. Basically, time and space switch places inside the event horizon. Because every possible direction you can move in only takes you deeper, that means the future is the singularity, and as you move forward in time you move closer in space to it.

    So in net: they’re not really holes and they’re not really physical objects: they’re regions where every path in space is forced into going towards the singularity, which is itself infinitely small and infinitely dense.

    Anyways, you can accurately calculate the precise size of the region. It’s called the Schwarzschild Radius, and it’s the size of the black hole that any particular amount of mass, if forced to collapse, would become. Turns out that if you calculate the size of the black hole that contains all of the mass and energy in the universe, it would be about the size of the universe, but not quite precisely. That’s all that’s been calculated.


  • The only places it seemed to work were those that were already established as the centers of capital and were thus benefiting from the expanding frontier of exploitation. Capitalism has run out of land and run out of people outside the imperial core to further exploit and so turns inwards to devour its once-beneficiaries. Internationally and especially in the global south it has served no purpose, ever, except to brutally oppress and exploit.
















  • What, is the AI going to dump a trillion tons of carbon dioxide into the air to cause a catastrophic runaway greenhouse effect, making huge swathes of the earths prime agricultural regions uninhabitable and forcing hundreds of millions of people to flee to other countries, emboldening fascist movements that seize on the fear of migrants and the strain on local resources, while increasing heat means more frequent super storms that destroy infrastructure while much of the global coasts are submerged, crippling international trade and driving famines and resource shortages on critical goods like medicine?