• merde alors@sh.itjust.works
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    5 days ago

    Because of its narcotic effect at high pressure, nitrogen shouldn’t be breathed by humans at depths below about 60 meters. So, at 200 meters, the breathing mix in the habitat will be 2 percent oxygen and 98 percent helium. But because of its very high thermal conductivity, “we need to heat helium to 31–32 °C to get a normal 21–22 °C internal temperature environment,”

    😮

      • NaibofTabr@infosec.pub
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        5 days ago

        Hmm… maybe not? The low density of helium at 1 atm is what causes the amplification of higher frequencies in the voicebox, but in a pressurized container the gas would be higher density so it might offset the effect… I think?

      • BastingChemina@slrpnk.net
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        4 days ago

        Apparently when doing saturation diving like that you can’t even understand what the other person says, between the helium and the pressure the voice is too distorted to be intelligible.

        You can communicate with a computer that transforms your voice to be intelligible but it is really not a pleasant conversation so you can stay there for weeks without having a conversation except for the bare minimum.

    • Echo Dot@feddit.uk
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      5 days ago

      What they mean is they will need to use the amount of energy that you would normally put into air to get it to 31° C, but the helium will only get to 21° C. At no point will the helium actually be 31° C.

  • KillerTofu@lemmy.world
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    5 days ago

    Is a man not entitled to the sweat of his brow? ‘No!’ says the man in Washington, ‘It belongs to the poor.’ ‘No!’ says the man in the Vatican, ‘It belongs to God.’ ‘No!’ says the man in Moscow, ‘It belongs to everyone.’ I rejected those answers; instead, I chose something different. I chose the impossible. I chose… Rapture, a city where the artist would not fear the censor, where the scientist would not be bound by petty morality, Where the great would not be constrained by the small! And with the sweat of your brow, Rapture can become your city as well.

  • werefreeatlast@lemmy.world
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    4 days ago

    Ocean horizons 2.0 I hope.

    Elon is probably the only superhero who could actually go there an show them all! Definitely not just any rich guy could do it.

          • Saik0@lemmy.saik0.com
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            4 days ago

            I now wonder if part of the reason that all happened is because the controller battery died, so they couldn’t ascend.

            • theneverfox@pawb.social
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              4 days ago

              Nah, the shell cracked, pretty much instant death. Dodgy tech works until it doesn’t, only the first critical failure matters

              • Saik0@lemmy.saik0.com
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                4 days ago

                Well duh? I’ve read the reports. I mean that maybe they went too deep because the controller died. Eg, dude holds button that tells controllers to go deeper. Controller dies… Sub just takes last input and keeps going deeper until it hits the catastrophic depth.

                Guy was an idiot for sure, I just wonder if the controller played ANY role at all.

                • theneverfox@pawb.social
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                  3 days ago

                  It seems unlikely… The vessel wasn’t up to the challenge of anywhere near that depth, and they intended to go that deep from the get go.

                  I mean, it could be, but Bluetooth shouldn’t work like that - it’s a digital signal with a bunch of failure modes in the spec. You’d have to code it particularly stupidly to have that kind of problem - it’s a very time-synched protocol, even a sudden disconnect with no disconnect signal is something a coder would have to confront explicitly if they were using off the shelf components

                  I’m not one to bet against bad code, but the decompression seemed to be pretty much instant and within the planned trip, it just seems like it doesn’t survive oscams razor

                • bstix@feddit.dk
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                  4 days ago

                  The plan was to go to the Titanic, which is on the bottom of the sea. Controller malfunction or not, the hull was the issue.

  • cyd@lemmy.world
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    5 days ago

    The trouble with all these schemes is that it’s totally contrary to poweful real world trends. The surface of the Earth has an overwhelming abundance of rural land that is incredibly hospitable to life. And these places are depopulating because people prefer living in cities. How are you gonna get people to move to the bottom of the sea, or Mars, if they don’t even want to move to West Virginia?

    • shalafi@lemmy.world
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      4 days ago

      West Virginia is the very opposite of barren, just poverty stricken. Nevada would be a better example.

    • Echo Dot@feddit.uk
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      5 days ago

      People don’t really want to live in the cities they just want to live where they can get a job. Largely rural communities don’t really have an overabundance of employment opportunities, tend to have crap internet, and most of the properties are already owned by rich people who want a second home, so house prices are completely insane.

    • LovableSidekick@lemmy.world
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      5 days ago

      The trouble with these commenters is that they don’t read the articles. This one isn’t at all about getting people to move underwater, it’s very specifically about habitats for ocean researchers to live in, rather than spending enormous amounts of time decompressing after relatively short dives.

  • WhatSay@slrpnk.net
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    4 days ago

    I’ve been playing lots of Oxygen not Included, so… Yeah good luck, what could go wrong?

      • Furbag@lemmy.world
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        3 days ago

        Add in “But harvesting it angered the psychic primordial shark that we worship as a god.” And you’ve got the rough plot for the water planet from Kotor 1.

  • rottingleaf@lemmy.world
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    4 days ago

    Ocean is tough. Tougher than floating cities. Which are more realistic as real habitable environment.

    I vote for Stanford torus stations in various L points.

    Or, naturally, Mars.

    Before that, of course, there are plenty of locations on Earth hard to live in, but not as hard as underwater domes. They should try that.