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Joined 1 year ago
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Cake day: June 30th, 2023

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  • In your previous artworks, I really enjoyed your themes of reusing/repurposing things from an earlier time. So the first thing that came to mind for me was an offshore platform (one of those shallow water ones that’s anchored to the seabed) repurposed as living space, research area, or a hub for an offshore wind farm.

    I don’t know of the technology level in your setting could accommodate this, but I also thought about nuclear powered cargo ships. Lots of safety and environmental considerations, but the potential to vastly reduce emissions (since cargo ships switch to the cheapest, nastiest, most bottom-of-the-barrel bunker oil sludge they can get their hands on as soon as they’re in international waters).




  • CommissarVulpin@lemmy.worldtoScience Memes@mander.xyzRadioactivity
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    3 months ago

    So there’s four types of radiation: alpha, beta, gamma, and neutron. When you’re talking about radioactive materials, it’s almost exclusively the first three. In addition to the inherent danger of the object itself, there’s also the danger of radioactive contamination: not making other things radioactive, but shedding bits of themselves as dust and then that dust getting on other things, or getting ingested/inhaled by humans.

    Active fission reactions, like what goes on in the core of a nuclear reactor (or perhaps messing around with some plutonium and a screwdriver), produce neutron radiation. Neutrons can make other things radioactive, via a process called “neutron activation”, whereby the neutrons bind to the material and change some of the atoms into radioactive isotopes.

    I hope that helps, and feel free to ask me anything else about radiation. I have some education about it thanks to my job, and I’m always happy to help other people understand it more as well.


  • More or less. The difference is that, if they really wanted to, they could very thoroughly clean the notebook and take most of the contamination off. I’m guessing they won’t because a) It’s a historical artifact and they don’t want to risk damaging it, b) the contamination is so low-level that it’s not dangerous as long as you don’t lick it or something, and/or c) there’s a bit of a shock factor in watching a scientist’s notebook make a Geiger counter freak out.





  • Cheetahs are quite a bit more fragile since they’re optimized for speed. Any injury could hamper their ability to hunt, so as a result they’re more skittish and flighty than the other big cats. In zoos they often raise cheetahs alongside dogs, giving them a service animal of sorts so they are calmer around the weird hairless monkeys and don’t get stressed out as much.





  • CommissarVulpin@lemmy.worldtoScience Memes@mander.xyzSoup
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    5 months ago

    Fun fact! During the Apollo flights to and from the Moon, the spacecraft would perform “Passive Thermal Control” or “barbecue roll” where it would rotate around its long axis about once per hour, to distribute the thermal load from the sun and keep one side from heating up too much