xkcd #3141: Mantle Model

Title text:

Mantle plumes explain Hawaii, Yellowstone, Iceland, the East African Rift, the Adirondack uplift, the Permian extinction, the decline of Rome, the DB Cooper hijacking, and the balrog in Moria. Those little hills of sand in your yard are caused by antle plumes.

Transcript:

Transcript will show once it’s been added to explainxkcd.com

Source: https://xkcd.com/3141/

explainxkcd for #3141

  • panda_abyss@lemmy.ca
    link
    fedilink
    English
    arrow-up
    18
    arrow-down
    5
    ·
    3 days ago

    This is how I feel about the double slit experiment.

    Lights not a wave and a particle depending on whether you observe it. Something else is going on, that’s bullshit.

    • niktemadur@lemmy.world
      link
      fedilink
      English
      arrow-up
      4
      ·
      edit-2
      2 days ago

      I have a hard time wrapping my head around the concept of how an observer is inextricably intertwined with the object/particle being observed, as part of the framework for the equations to flow, so to speak.

      Then there’s the fact that Newton’s equations assume an infinite speed of light, until physicists of the 19th century that pinned it down, then Einstein established it as a constant.
      If you try and use lightspeed at the atomic level, many values blow up to infinity, the math stops working, the answers become like static noise.

      Recently I found out that Schrödinger’s famous equation is written in the framework of classical, newtonian physics, not in quantum terms. Like using a star screwdriver to flat screws, yet it seems to do an admirable job up to a point. And you have a whole lot of infinities to sweep under the rug and ignore, what is it called, Normalization or Renormalization? One of the two.

      It’s all incredibly complex and abstract, the numbers being measured by the guys in the lab were strange to the point of absurd, and if you think it’s weird for us now, imagine how they saw it then.

      So yeah, the math says that the observer is not passive from afar, the observer is part of the equation itself of what is trying to be measured.
      Then the closer you look, the blurrier things get, like a greased pig you can’t get it to hold still, not even for an instant, particularly at the smaller scales, things don’t behave the way they do at our sensory and mental level. Things behaving as if going backwards through time. Particles and anti-particles popping in and out of existence. Particles transforming into other particles. Particles going through walls. The list goes on and on and on.

      Weird stuff has to be conjured up to try and make any sense of this.
      Light or electrons as amplitudes of probability waves. Axes of imaginary numbers, eigenvalues in Hilbert spaces, wave-particle duality, etc.

      Reality is extraordinary, it will keep on always surpassing our expectations and imaginations. It just keeps on happening this way, wherever we poke at.

    • Cethin@lemmy.zip
      link
      fedilink
      English
      arrow-up
      4
      ·
      3 days ago

      The problem is the word “observation.” Most people interpret that to mean a person look at it. This isn’t the case. What it means is if it interacted with something where knowledge of its position is required. If this happens then the waveform collapses and a specific position is set. Before then it doesn’t have a fixed position and the position is described as a probability distribution.

    • lemonskate@lemmy.world
      link
      fedilink
      English
      arrow-up
      7
      ·
      3 days ago

      You’re right that light is not “a wave and a particle depending on whether you observe it”. Instead, light is a quantized field. It is a field because it exists at every point and allows for wave-like behavior such as superposition and interference (both things seen in all fields, like waves in water or radio, etc.). But it is quantized because when the field interacts it does so via photons which can only exist in integer quantities. This quantization of interaction of the underlying continuous field gives us all the “weirdness” we see. Okay, not quite all of it, there are still even weirder parts of quantum mechanics, but it does explain the double slit experiment.

      • Dragon Rider (drag)@lemmy.nz
        link
        fedilink
        English
        arrow-up
        2
        arrow-down
        3
        ·
        3 days ago

        Still doesn’t explain how superpositions can collapse from interaction. Drag doesn’t believe it, drag thinks they stay in superposition and whatever interacted with them is also in superposition now.

    • four@lemmy.zip
      link
      fedilink
      English
      arrow-up
      2
      arrow-down
      6
      ·
      3 days ago

      I’m with you on that one. I don’t care what the scientists say, there’s no way quantum physics is random, we just don’t know where to look yet. And entanglement? Nah, you made this one up.

      Anyway, I didn’t get into a university, but I’m not bitter about it, no.

  • NoSpotOfGround@lemmy.world
    link
    fedilink
    English
    arrow-up
    5
    ·
    3 days ago

    I… I don’t understand what the joke is here. Not even the explainxkcd mentions any kind of humor outside of the alt text. What am I missing?

    • Chronographs@lemmy.zip
      link
      fedilink
      English
      arrow-up
      22
      ·
      3 days ago

      It’s implying that every time we don’t know why there’s land somewhere we don’t expect geologists are just like “uhhhh mantle plume”