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Cake day: July 6th, 2023

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  • bouh@lemmy.worldtoScience Memes@mander.xyzBees
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    2 months ago

    It makes it more dangerous : the sting is attach to the venom bag, so the venom bag gets to empty itself whole if it stays. Evolution would have chosen the survival of the hive, not the survival of the bee.

    One thing is weird though : you can extract the sting of a wasp with a pincer. The wasp will live through it. Why do the bee dies when it loses it’s sting and not the wasp?




  • It’s a slippery slope. First it’s either a community they can share anything with, or it is a subject dear to them that they see people give solution to. Then, slowly, one idea at a time, they get litteraly corrupted. Ideas are imprinted through repetition, values are suggested. Then, or before, you imprint the idea that the others are lying. This is key because it seed doubt in everything, but as he is closer from this group, this group get to imprint its own ideas through repetition alone. Distance is built with relatives so that the group is the only group he has. Then if he starts to disagree, he will be kicked, sometimes also punished, and he’ll be left alone, or at least he must be convinced of it. Once there radicalisation is a process that’s hard to stop.

    Doubt, distrust, and a group to be with are the key ingredients. Liberalism is a fertile ground for this because it promotes individualism when humans are social creatures. So it’s very easy to find people in need of a social group that gives belonging. And racism makes the easiest pretense : you belong because of your blood, or because you’re born here.

    For sexism, it’s mostly a reactionary backlash, and secondly this liberalism problem of promoting individualism to humans who seek belonging. Feminism did won, and the old way of treating women is being addressed. But it is a process, and while we know what’s bad, we don’t have much new examples to follow. Yet most people have been trained in the old way, so now they are at lost. It’s not the first reason why they’re alone, liberalism has this place, but it is far easier to blame it on women and feminism than to try to build a new society. And also, it again gives them belonging with men like them that understands them and give explanations and solutions to their problems. Not good ones, but that’s not the point.



  • Vesper. It is imo a good sci-fi movie, but a tough one. The lives of the characters are not easy, but the movie doesn’t tell you that, you discover it through details casually said by the characters. The movie itself is a post apocalyptic movie in a very original setting. It is about biotechnology instead mechanised or AI tech. It is worth it for this alone IMO. It was a great movie imo, but not one to cheer up.



  • bouh@lemmy.worldtoScience Memes@mander.xyzRadioactivity
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    4 months ago

    Ha ! Turns out I’m right after all : radioactivation can happen with all type of radiations. But neutron activation is the lowest energy one.

    You are right that it’s probably a contamination for the book though, and not directly an activation (although carbon can be activated and will be found in the book).


  • bouh@lemmy.worldtoScience Memes@mander.xyzRadioactivity
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    4 months ago

    I know quite a bit about radioactivity thanks to my studies. I was sure all radiations could activate something, but it turns out I was wrong apparently because I can’t find anything but neutron activation.

    I’m pretty sure alpha, beta and gamma rays can stick to a particle, often bringing it in an unstable state that will force it to release something to get into a stable state. That’s particle physics. And that’s why we call them ionising radiations : because they turn atoms into ions. But my memories are definitely fuzzy, and it was not were I was the best.

    Those radiations may only activate for a too short time to be useful maybe? I don’t know.




  • bouh@lemmy.worldtoScience Memes@mander.xyzRadioactivity
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    4 months ago

    Marie Curie studied radioactivity with pure and very active materials with no protection. The radioactivity of the notebook is indirect radioactivity, that is material that becomes radioactive after being exposed to powerful ionizing radiations. It must be noted that the notebook may not be deadly radioactive. And if it will be for 1500 years, it won’t be deadly for 1500 years. For reference, bananas tend to be radioactive too. And you are exposed to ionizing radiations when you take the plane.

    Chernobyl had two reactors burn iirc. Most of the radioactive material was in the reactor, but the fire made smoke out of radioactive materials. The quantity of smoke, in kg, that go out was significant, but it got diluted in the atmosphere and spread. Which means there wasn’t so much dust, in mass, that got in any one place. The dust is also not only uranium, but a combination of uranium and materials that were contaminated like the notebook. With the rain, the dust was washed and distributed more, and with the time, materials become less and less radioactive.

    Both the book and chernobyl are not dangerously radioactive. But because of the nature of radioactivity, care must always be taken.




  • What about the Copenhagen interpretation debate? What about the non-locality?

    These are academic debates, not people ones. Saying that quantum mechanic is intuitive is arrogant at best. You may have a perfect understanding of the current theory and how to use it, and you maybe comfortable using it everyday, but then you should be aware of the limits shouldn’t you?

    Otherwise it’s like alchemy.


  • The problem of quantum mechanic is that the physics it shows us is not intuitive, and it sometimes breaks other laws of physics.

    Quantum intrication means that information travels faster than light for example. Counterfactuality also breaks causality.

    It’s not the maths that are the problem, it’s that it doesn’t make physical sense in the world we currently understand. And the equations explain nothing. They merely describe a a world that doesn’t make sense.

    Quantum mechanic is like having a machine from the future that does cool things, but you don’t understand how it works. It’s like people did chemistry before they understand what chemistry was. We do uber cool things with it, but it is a spotlight on our ignorance at the same time.


  • “might have significantly different and more urgent needs”… You know, a specific situation can always be dealt with specific solutions. Where I live we’re civilized people, we can discuss these things. Like you could also talk about a wounded person or a pregnant woman.

    But unless specified, a handicapped person is a normal person that can wait in the queue like everyone.

    Or it can be like so many people here: an asshole that will enforce its privilege to the expanse of everyone else.


  • It’s not about fighting for any cause. It’s about not making the world a shitty place. Every time you act like a selfish asshole, you make the world a shittier place. That’s all there is.

    The gendered restrooms is about comfort. But at some point, comfort get in the way, so you scrap the useless rules.

    I have been in handicapped restroom. I never had a case of a handicapped guy bypassing the queue for it, but if there was a big queue and he would do it, he would be an asshole.

    You can be selfish and individualistic, or you can try to not be an asshole.