• 3 Posts
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Joined 5 years ago
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Cake day: May 31st, 2020

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  • Ephera@lemmy.mltoScience Memes@mander.xyzFictional
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    11 hours ago

    I’m no expert. I probably know too little about the propagation speed of a wave to understand what you mean there.

    But here is a scenario where something is faster than light in the given medium: https://en.wikipedia.org/wiki/Cherenkov_radiation

    As I understand, neutrons and gravitational waves are also bound by the speed of causality, because they have no mass. And I believe, unlike light, they are unaffected by electromagnetic forces that a material exerts, so they would presumably (always?) travel faster than light in that medium.

    I will also say, that from what little I understand of this video: https://www.pbs.org/video/pbs-space-time-speed-light-not-about-light/
    …it sounds like trying to determine the speed of causality by measuring it, is kind of backwards. You’re at best experimentally confirming what has to be a given under our laws of physics.




  • She did the math (with some assumptions), but basically 0.25 mL of lemon juice will turn 500 mL of alkaline water into neutral water:

    This is in the video at 13:16.

    The reason is that pH is a logarithmic scale. Alkaline water has a pH of about 8, which means it has a tenth of the hydrogen ions compared to neutral water at pH 7.
    Lemon juice has a pH value of 2, which is 1,000,000 times more hydrogen ions than there are in pH 8. So, you just need a little bit of lemon juice to increase the hydrogen ions in alkaline water tenfold, which makes it neutral.






  • To me, a big part of it is that I’m tired of commodity art. I don’t care about your pretty pixel soup. I’ve seen other pixel soups before that were similarly pretty.

    And I’ve been tired for many years, long before every middle-manager under the sun could cook up their own pretty pixel soup.
    Back then, it was humans trying to make a living off of their passion and then settling for commodity art to make ends meet. I was cheering them on, because they were passionate humans.

    Now that generative AI has destroyed that branch of humanity, there’s no one to cheer on anymore.
    Even if generative AI never existed in the first place, I’d like to see commodity art being relegated to the sidelines and expressive art coming into the limelight instead.

    Tell me a story with your art. About your struggles or a brainfart you had, or really anything. This comic is great, for example. There’s emotions there and I can see the human through the art. I would’ve chosen a very different illustration for whatever, for example, which tells me a lot about the artist, but also about myself.
    I have never had that kind of introspection with pretty pixel soups.



  • However there are things when the Ai is helpful, especially for writing tests in a restrictive language such as Rust.

    For generating the boilerplate surrounding it, sure.
    But the contents of the tests are your specification. They’re the one part of the code, where you should be thinking what needs to happen and they should be readable.

    A colleague at work generated unit tests and it’s the stupidest code I’ve seen in a long while, with all imports repeated in each test case, as well as tons of random assertions also repeated in each test case, like some shotgun-approach to regression testing.
    It makes it impossible to know which parts of the asserted behaviour are actually intended and which parts just got caught in the crossfire.



  • Ephera@lemmy.mltoComic Strips@lemmy.worldBig Problem 🥀
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    7 days ago

    Personally, I don’t think that more research will particularly change our outlook on that. Anything “geo-” is incredibly political.

    Even if we find a solution that genuinely just reverses the effects of climate change, there’s gonna be some regions that see short-term disadvantages from that. Or even regions that merely imagine some catastrophic weather events were caused by making the planet cooler, even if they would’ve been hit by worse on a warmer planet.

    Those regions may go against all reason to stop the geoengineering from happening.


    It also has to be said that the CO2 in the atmosphere isn’t just pumping up the temperature, it’s also causing ocean acidification. Corals get dissolved by the sea water getting less alkaline. And corals are the basis for a whole lot of life on Earth.

    Which is again one of those points, where I just don’t see research finding much better of a solution than algae and trees. You can hardly beat or improve the efficiency of just letting nature happen.
    I guess, we could start pouring lye into the ocean instead, but we’d need quite a lot of it. So, I’m also not particularly convinced that it’s more cost-effective than letting nature happen, even leaving aside the problems we could cause with lye build-ups.




  • Ephera@lemmy.mltocats@lemmy.worldClose
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    7 days ago

    Is it maybe a burying instinct, like they have with their poop? The carpet might seem more like grass or lose ground, where it is possible to bury it. You don’t really want the puke rotting away on the stone ground of your lion’s den, do ya?



  • Well, as was already said, tooltips don’t work on mobile, at least not unless you write custom code.

    And I’ve seen concepts for various marquee solutions, which attempted to fix the problem of the text start not always being readable, by e.g. only making the marquee scroll once after you click on it.
    If you enjoy these marquee solutions, then more power to you, but the need for custom code is what keeps me away again.

    Just making it horizontally scrollable is a beautifully simple solution in comparison.