Rules:

*You can teleport into and out of it at will

*It has a couple of plug sockets and can connect to internet from the region you teleported in from

*You can take objects and people with you

*As already stated, it is 3m^3. The walls are plain plaster with a light in the middle of the ceiling. The pocket dimension is topologically toroidal, so if there weren’t walls and a ceiling/floor (which you can actually destroy) you would loop if you went more than 3m in any direction. Gravity, then, is artificial and can be altered to anywhere from 0 to 2g from a dial on the wall.

  • Inductor@feddit.de
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    8 months ago

    Can I take one end of a cable with me?

    What’s the max power I can get from the sockets?

    Where does the eject button dump people and can it be set to dump things other than people as well?

    Does time continue inside the pocket dimension if no one is inside?

    What’s the internal temperature/humidity? Is it regulated?

    Can I choose what I take with me, or is it just everything im wearing/carrying?


    Questions aside, I would fill it with all sorts of stuff that I might need at some point, but leave enough space for a bed and a desk.

  • Dharma Curious@startrek.website
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    8 months ago

    Okay, after reading the comments I have determined that this is a magic pocket dimension, not a sci-fi pocket dimension. That’s important. Sci-fi pocket dimension gas too many restrictions, but OP has been kind enough to gift us a magic pocket dimension. If I pop in on a flight, I don’t fall to my death when I leave.

    So, I set it up as a space for living in tight quarters. Like an RV, I guess. I make sure it has some exercise equipment, and I give it to my mom to use. She’s disabled, and can’t move a lot under normal conditions, and for reasons I won’t go into, also can’t do aqua therapy anymore. Low g exercise could help her, and we could slowly increase the gravity. Eventually, she could be healthy enough for surgeries that could get her to a better standard of life.

    Book cheap flights, cruises, et cetera. Teleport into the room, and back out at the end. Travel the world. If possible, teleport my mom in whenever somewhere is not wheelchair accessible, and then back out once we’ve passed that point.

    Make money to support the travel lifestyle by being a magician, or smuggler. Whenever possible use the pocket dimension to help people escape bad situations. Teleport in someone while in my car, drive to safety, teleport out. They’re coming out relative to the vehicle, not the vehicle’s position. Excellent for helping refugees, domestic violence victims, et cetera.

  • noride@lemm.ee
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    8 months ago

    Can I only teleport back to where I teleported in from, or can I teleport out of the cube to anywhere I want?

  • pingveno@lemmy.ml
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    8 months ago

    Okay, first things first, this talk of making it my living space? Nix that. That works well enough for a single person eating microwave dinners, but I like cooking and having people over. But travel? Yeah, that would be awesome. I’m thinking:

    • Bunk beds
    • Desk with a computer
    • Very efficient use of shelving
    • Fridge, hot plate

    My only concern then becomes a toilet and shower. I guess you could move water in, but the water pressure is going to be crap.

  • CanadaPlus@futurology.today
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    8 months ago

    It becomes my house. Now all I have to worry about is food, water and a few incidentals. To shower, I could probably exploit the geometry for endless water pressure instead of using a pump, then I’d just need a little heater and a filter of some kind.

    The first thing I do, of course, is dick with the gravity dial. See how low I can get it before I lose my lunch, see how high I can turn it and still do everything I need. Maybe I stick something heavy to the side of the dial so it turns itself and so on.

    Maybe to raise the rest of what I need, I’ll start a moving company.

    The weird geometry could also have some engineering uses that are pretty unique. For example, you could make a magnetic bottle for plasma that doesn’t leak as it wouldn’t need ends, or a laser in a frequency of light that’s hard to reflect.

  • CaptainBasculin@lemmy.ml
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    8 months ago

    break top

    break bottom

    insert shit ton of rocks

    set gravity to 2g for faster gravitational acceleration

    I have acquired rocks that can keep falling and build up velocity forever.

    live life as usual; when I’m old enough to near death, aim for anywhere within the planet with said rocks.

    Assuming I fill the 3x3x3 box half to half with sandstone and air; its weight will be 33kg.

    If I live for 70 years more, assuming the gravitational acceleration is 19.72 m/s^2; I can generate stones that can go up to 156.8 billion km/s (or 145 times the speed of light)

    I’m pretty sure this will be enough to destroy a huge chunk of the existing universe and in the end I’ll be the person to go out of the world with the biggest bang.

    Well, specifics about the big bang is not known; but I’ll be its closest contender if it is correct.

    • JackGreenEarth@lemm.eeOP
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      8 months ago

      They wouldn’t go faster than terminal velocity if you keep air in the chamber, and even if you remove it, they won’t go faster than c. They’ll still go pretty fast, though.

        • InnerScientist@lemmy.world
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          8 months ago

          According to special relativity, the energy of an object with rest mass m and speed v is given by γmc2, where γ is the Lorentz factor defined above^1. […] The γ factor approaches infinity as v approaches c, and it would take an infinite amount of energy to accelerate an object with mass to the speed of light. The speed of light is the upper limit for the speeds of objects with positive rest mass[…] This is experimentally established in many tests of relativistic energy and momentum.

          More generally, it is impossible for signals or energy to travel faster than c. One argument for this follows from the counter-intuitive implication of special relativity known as the relativity of simultaneity. If the spatial distance between two events A and B is greater than the time interval between them multiplied by c then there are frames of reference in which A precedes B, others in which B precedes A, and others in which they are simultaneous. As a result, if something were travelling faster than c relative to an inertial frame of reference, it would be travelling backwards in time relative to another frame, and causality would be violated. In such a frame of reference, an “effect” could be observed before its “cause”. Such a violation of causality has never been recorded, and would lead to paradoxes such as the tachyonic antitelephone.

          More info here

          1 γ = (1 − v2/c2)−1/2

          • idiomaddict@feddit.de
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            8 months ago

            What about quantum entanglement sending a signal faster than light?

            (I’m just some schmo who watched an extra credit history series on quantum computing, so there’s every chance in the world that I don’t have it right. )

            • absGeekNZ@lemmy.nz
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              8 months ago

              While the entanglement “signal” is near instantaneous, for various reasons no meaningful information can be deciphered faster than C.

              Assuming our quantum theory, while not complete, is not wrong. We will not be able to engineer our way around this limit. A lot of funky shit becomes possible if you can break causality even with “just” information.

              • idiomaddict@feddit.de
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                8 months ago

                I thought the reason quantum theory is so controversial is because it does break causality. Like, currently we can’t decipher it, but is that supposed to be a permanent state- that quantum information is indecipherable until it would no longer transmit information faster than light?

                • absGeekNZ@lemmy.nz
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                  8 months ago

                  Quantum theory is only “controversial” to the general public, mainly because we haven’t found a way to explain in simple terms things like superposition, entanglement, quantum tunneling. Quantum theory is spectacularly successful, though incomplete.

                  Even the “simple” stuff like the uncertainty principle takes a detailed understanding to properly grasp why there are pairs of properties that are inherently linked, and that information about one dictates how much you can know about the other. e.g. position/momentum and energy/time.

                • Mossy Feathers (They/Them)@pawb.social
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                  8 months ago

                  I might be wrong, but iirc quantum theory just straight up doesn’t give a shit about causality. Where everything else requires the cause to be observable before effect (something travelling faster than light would result in effect being potentially observed before cause), quantum theory says, “why does the universe give a fuck whether or not we can see it? If it happened, it happened, regardless of whether or not we observed cause before or after effect.”

                • cynar@lemmy.world
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                  8 months ago

                  You can transmit something, but it has a noise added to it. To decode it, you need to send the readings to the other end, via normal means. Basically, the receiver can tell, in hindsight, that a message was sent, but only once its other half has been received via normal means. The best you can do is get a timestamp of when the message was sent, as well as a message channel that is impossible to intercept.

                  The problem comes when QM meets relativity. With instant communication, you can send information into its own past. E.g. A and B are 2 planets. C is a ship, passing planet B at relativistic speeds. Planet A sends a message to B, over the FTL link. B then sends it to C, over a normal link. C, finally sends it back to A over FTL. Due to the ‘tilt’ of C’s light cone, the “now” of A-C is behind the “now” of A-B. This allows for paradoxical situations. The maths of Relativity implies that you can’t form a closed time loop like this. Such behaviours tend to imply some deeper rule, even if we haven’t found its cause yet.

                  Quantum mechanics has a lot of strangeness. It also seems to play fast, but not loose with causality. E.g. objects can move backwards in time, but still obey causality. Others can be smeared over time space, but still collapse to a causality obeying state. Etc

            • InnerScientist@lemmy.world
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              8 months ago

              Basically as far as we can tell there there is no information traveling at FTL speed so it just works? All information that is traveling is just as fast as c or slower.

              “Certain phenomena in quantum mechanics, such as quantum entanglement, might give the superficial impression of allowing communication of information faster than light. According to the no-communication theorem these phenomena do not allow true communication; they only let two observers in different locations see the same system simultaneously, without any way of controlling what either sees.” link

              “In physics, the no-communication theorem or no-signaling principle is a no-go theorem from quantum information theory which states that, during measurement of an entangled quantum state, it is not possible for one observer, by making a measurement of a subsystem of the total state, to communicate information to another observer.” link

              • idiomaddict@feddit.de
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                8 months ago

                Thank you for this, by the way. I was thinking of the two entangled electrons as communicating with each other, rather than people communicating with each other through the entangled electrons, which I think makes a difference, because it doesn’t rely on interpretation, but obviously we can’t measure how or if electrons “communicate.” Is it correct that one of the limitations is in interpretation or am I reading this wrong?

                • InnerScientist@lemmy.world
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                  8 months ago

                  Well, yes. We don’t know if the measurement we take is the result of a wave form collapse (we caused it) or the result of someone else having measured it, which would giving us the oposite value that they measured. We can’t tell if someone “sent” information or if it was the random result and we have no way to chose what value we (or the other end) gets when we collapse it.

                  This isn’t easy to explain over text so I’d recommend watching this video, specifically chapter “How to exploit?” as the visuals make it easier to understand.

          • Krzd@lemmy.world
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            8 months ago

            Hmmmmmmmm, now, how much energy does the box have to generate that constant 2g of acceleration? In this hypothetical the box appears to have an infinite amount of energy to generate that force though…

            • InnerScientist@lemmy.world
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              8 months ago

              Yes it seems to have infinite energy but the throughput is limited to 2g of acceleration, unless you give it infinite time as well it will not reach c, though it would approach it.

              Doing some calculation the final speed of 33kg, falling in 2g, for 70 years, without friction is “only” 0.9977% the speed of light.

      • BreakDecks@lemmy.ml
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        8 months ago

        Any energy lost to air friction would be transferred into the air. In a closed looped system with constant acceleration a single falling brick would eventually stir the air up into a light-speed wind.

      • Sadbutdru@sopuli.xyz
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        8 months ago

        I don’t think the drag force due to air would work the same in a system with such a high concentration of rocks. It’s not like one object falling through undisturbed fluid, which then has to get out of the way, in this case the air would gradually start to move along with the rocks.

        This might be better modelled as turbulent flow of a mixed solid/air suspension. But there’s no ‘edges’ to the flow due to the looped dimension, so the viscous forces are pretty uniform… There would still be a terminal velocity, but much much higher than a rock falling through an atmosphere

        Also I imagine the rocks would quickly grind themselves to very fine dust, once they pick up a bit of kinetic energy, so then it would behave more like a fluid with uniform density… Could it even end up as laminar flow?

        • Krzd@lemmy.world
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          8 months ago

          i don’t think they would grind themselves to dust, as they’re all moving in the same direction therefore their reaktive Velocity compared to each other would be (near) 0, not giving them much energy

          • Sadbutdru@sopuli.xyz
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            8 months ago

            It’s a really interesting question, I would love it if someone who understands this kind of physics properly would chime in!

            By my understanding of Reynolds number etc, the faster they go, the more turbulent the flow, so the rocks would be constantly hitting against each other sideways, and surely grind to dust in the constantly accelerating scenario.

            But maybe the infinite (looped) nature of this ‘dimension’ means that this logic doesn’t apply. What would even be the ‘characteristic length’? Are we thinking about established flow at the centre of an infinitely wide pipe? Am I wrong to think of constantly accelerating rocks with air in between as a type of fluid flow?

            • Krzd@lemmy.world
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              8 months ago

              No I think you’re right about the fluid dynamics aspect, as we do have an indefinitely long pipe, but in the prompt the walls do still exist, so they’ll probably do create some friction. The question is, would the rocks build up some sort of boundary layer of slower flowing particles near the wall, and how much do the boundary layer and “main” center flow mix?

              Thinking about it, it isn’t even an indefinitely long pipe really, as there are no “new” sections of wall coming up, instead it’s constantly passing the same section of wall, and same section of boundary layer…

              If someone knows how to simulate this in a physics engine or virtual air tunnel I’d be really interested in that!

    • isyasad@lemmy.world
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      8 months ago

      A half room full of sandstone is 33kg? 27m³ room filled half with sandstone? By my calculation it’s more like 31,400 kg

    • brianorca@lemmy.world
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      8 months ago

      You can’t pull things out of the pocket without going in there first, which would be deadly in your situation. (OP says you can go in and out, and you can take things with you.)

      • CaptainBasculin@lemmy.ml
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        8 months ago

        There is an eject button for those inside to get out if something happens to you

        In this case, when i die; the button will immeadiately get summoned inside the box only to be presssed an instant later

  • iceonfire1@lemmy.world
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    8 months ago

    *You can only teleport out to where you teleported in from.

    Does this mean you get dropped into outer space if you stay inside for more than checks notes ~4 minutes?

    • JackGreenEarth@lemm.eeOP
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      8 months ago

      No, it’s relative to a more sensible object than the sun, of Sagittarius A* or whatever you were imagining. Probably something like the closest planet/moon to you is what it’s actually relative to.

      • boatswain@infosec.pub
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        8 months ago

        So does it just stay at the same point relative to the gravitational center of Earth? What about the day/night cycle; does the Earth keep rotating under it? And how big a mass is needed to lock it in place? It’d be pretty sweet for long plane trips if it traveled with the plane.

        • JackGreenEarth@lemm.eeOP
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          8 months ago

          It stays relative to a reasonable thing, how humans would expect it to. If you were on a plane, it would stay relative to that, if you were on the ground of on the moon, similarly.

  • Punkie@lemmy.world
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    8 months ago

    No mention of external dimensions, so I am going to assume that it exists in the abstract since you mention teleportation. Like you just think about it and teleport there, not carry it upon your person like a portable hole in D&D.

    Like others mentioned, a living space of some kind. I’d worry at first where I teleport inside, like hopefully not inside my mattress. Also, when I teleport back out, where is that? Where I teleported in? What if that gets replaced, like say I popped out while in an empty parking garage, but popped back in and a car is now parked where I left off? Might be nice if I pop back out anywhere I choose. Pop in while in New York, pop out in London.

    Man, I’d save so much on rent. Or at least storage.