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Cake day: June 22nd, 2023

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  • Ranch water made from Topo Chico lime + Pantalones Tequila. But I prefer the black peppery hints of Don Julio, so I tried dropping a few whole black peppercorns in the bottle of Pantalones, and I think it actually got the flavor closer to where I wanted it. Or maybe it was in my head.

    Anyways, cheers!









  • Based on one of your comments clarifying what you’re wondering, I don’t know that this helps you in what you’re looking for, but the “OMG particle” came to my mind. It was traveling at such high energy when it hit our atmosphere that…

    If the proton originated from a distance of 1.5 billion light years, it would take approximately 1.71 days in the reference frame of the proton to travel that distance.

    The energy of the particle was some 40 million times that of the highest-energy protons that have been produced in any terrestrial particle accelerator.

    In the center-of-mass frame of reference (which moved at almost the speed of light in our frame of reference), the products of the collision [with a particle in our atmosphere ] would therefore have had around 2900 TeV of energy, enough to transform the nucleus into many particles, moving apart at almost the speed of light even in this center-of-mass frame of reference. As with other cosmic rays, this generated a cascade of relativistic particles as the particles interacted with other nuclei.

    I don’t know if that cascade is the same as the Cherenkov radiation it produced, but that radiation is how they detected this particle, and it’s interesting a.f.

    [It is] emitted when a charged particle (such as an electron) passes through a dielectric medium (such as distilled water) at a speed greater than the phase velocity (speed of propagation of a wavefront in a medium) of light in that medium. … Its cause is similar to the cause of a sonic boom…

    I.e., (layman’s understanding here) the particle, having a dual particle- and wave-like nature, is propagating through the vacuum of space “close” to the max speed of propagation of causality itself. As it encounters a medium, our atmosphere, it is going faster than causality itself can possibly propagate through that medium. But the energy is still there and isn’t going to just vanish, so it has to split out into multiple particles that would, with their fraction of the original energy, then be able to propagate through the medium. Or something amazing like that?

    Edit: My layman’s understanding of Cherenkov radiation requires a bigger disclaimer, like a strike-through. :)



  • I hitched my horse to just what I consider the basics–zip and unzip–and that has made it easy for me. But I’ve been stuck on those.

    Extract anything:

    tar xf <archive_file>
    

    Create a tbz2 archive:

    tar cjf <archive_file.tbz2> <stuff to put in it>
    

    (And tossing in a -v is pretty universal, if that’s your thing.)

    Some day, instead of commenting on a reddit Lemmy post, I think I’ll Google how to tell it to use .xz.

    Ok, you know what? Today is finally that day. It’s just capital -J instead of lower-case -j! That’s easy enough to remember, I guess.


  • atx_aquarian@lemmy.worldtoTechnology@lemmy.worldTikTok sues the US government over ban
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    2 months ago

    What would give them standing? They’d have to be an entity protected by the constitution to claim that protection was harmed. Is it this (Wikipedia)?

    TikTok Ltd was incorporated in the Cayman Islands and is based in both Singapore and Los Angeles. source

    I guess I’ve never thought about what makes an entity have rights here. Buckingham Palace couldn’t just open shop here and start suing our government, right?