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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 depends. There are riots in England currently because some racists don’t want anymore immigration. I’m pretty sure you can easily have a very heated debate with these guys. You may talk with a jew about Israel these days too.

    If you avoid hit topic with the wrong person, you won’t find strong opinions. But Internet bring people together, especially when they want to fight eachother.



  • 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 weakened religion is a long process going from the middle age to the modern world. It starts with the pope wars. It peaks with the religion wars in the XVIIth century. By this point the religious power was a political power like any other, but merely with a cultural hold on European populations. Which was the nail in the coffin.

    During this period, the Church radicalised itself as a defense mode. Which solidified the laïcal mindset of the Lumières. Basically the church entered a cultural war against science because it feared it would lose controle.

    Then the XIXth century happened. Monarchies got destroyed. And the Catholic Church got humiliated and destroyed as a political power. Socialism and communism appeared, and to state how progressive they were, they put the church in the same reactionary bag as the royalists.

    In the middle of this are the liberals who don’t care much about anything but profits. Si when democracy is on the rise, they are democrats. When royalty comes back, they praise the king. At least as long as they let them make good profits. And that’s what the church doesn’t let them do. Morale goes in the way of profit. It forbid slavery and exploitation. It’s against science. It promotes charity. That sucks balls for the liberals. But order is good, so why not being a believer but without the problems?

    It’s not science that made religion recess. It’s bad political decisions and alliances. Many renowned scientists were believers. Many still are. But somehow the religions are rejecting science because it doesn’t go into litteraly what their old fantasy book wrote. It’s a shame because religions could easily make a humanist evolution if they had the political will to do it.


  • I must be clear that the problem is not that it rakes time to do the things if you have the right recipe to do them. It takes time to find it when you make a mistake.

    The good way is simple: you need a system that’s well updated, so debian stable is not ideal and that was my first mistake. You need to use Proton on steam, or heroic game launcher for gog. And that’s it.

    The setup for these things is straightforward, simply follow a guide for your OS.

    Things got better and better in the last 2 years, and they’re still improving. I would argue that today Windows is not better. People learned how to install graphic drivers on windows, and any setup on Linux now is not harder than that.