A backup account for !CanadaPlus@lemmy.sdf.org, and formerly /u/CanadaPlus101 on Reddit.

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Cake day: November 19th, 2023

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  • Cooling by radiation is slower than convection or conduction, but it still happens. The James Webb went from room temperature to deep cryogenic in a few months, and it’s big. As for moisture, things cook off into a vacuum very easily. That’s the foundational to the whole concept of freeze drying, actually.

    Freeze dried wood is absolutely commercially available, if pricey. I have no idea if anyone has used it for musical purposes either. There’s a lot of audiophile-ish magical thinking in that space so it’s possible nobody has bothered.

    Edit: Although, since this is a research project, maybe not freeze drying it first was the point.










  • Yes. People seem to think the bends always happens on exposure to weird pressures, but it just doesn’t. I guess they’re understandably imagining it’s the same as hot or cold.

    (though no idea about the effects on the human body from such a sudden change)

    Well, enough delta p is entirely capable of squishing an entire person through a thumb-sized hole, and while there’s no hole here I image there’d still be some sort of shock wave, and the air already in your lungs returning to normal volume suddenly would be uncomfortable. Don’t go too deep the first time, definitely ease into it.

    Interestingly just 1 atm is fairly harmless. The first time someone got caught in a vacuum chamber they weren’t sure what they’d find, but the guy just got up and said his ears hurt.


  • That’s true, and in this case where the layer is a single molecule thick, pores and even cellular structure will add to it quite a bit. Hell, at that scale it’s probably hard to define any solid boundary to the body at all, since you’ll have things like the surface of evaporating sweat. Once again, we need to know a bit more about how the magic works to give a single answer.

    Our mathematician would have to add a measure on subset boundaries I guess. Or maybe just hand the problem off to a big boy who can handle things in the real world (zing!).



  • CanadaPlus@futurology.todaytoAsklemmy@lemmy.mlWho's winning the war in Ukraine?
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    11 months ago

    Russia should have had the conventional phase all finished in a couple months, so by that measure Ukraine. Russia has also lost territory the whole way past the battle of Kiev, so by that measure also Ukraine. Neither look set to win any time soon, so by that measure (which is probably the important one) it’s a stalemate. The big variables now are Western support and Russian political stability as the conflict drags on. Neither side is close to running out of men.

    The claims that Russia was winning the whole time come from basically the geopolitical version of flat earthers, who believe exactly the opposite of what everyone else does. Or actual Russian agents, but as far as I can tell that’s rare.