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Cake day: June 6th, 2023

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  • tetris11@lemmy.mltoScience Memes@mander.xyzY tho
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    29 days ago

    The magnet on the bonnet is pulling the car forwards as much as the magnet hanging on the wire is pulling backwards towards the car, and since they share the same root object (the car) the net motion is zero.

    If either of those magnets were rooted on the ground, the car would move (albeit not very far)






  • Different distirbutrions subscribe to different “key servers” (is that the right term?) to validate that the packages they’re getting have been signed by the right people, and not by Dick Dastardly and his crew. LibreWolf isn’t your typical Linux package, but probably on the same trustworthy level as some of “extra” packages found in other repos. My guess would be Mint subscribes to the key server where the LibreWolf dev’s key exists, and Ubuntu doesn’t because Ubuntu has a very Ubuntu™ way of doing things (I’m being a snob here).

    So I think if you really want to use LibreWolf, you will have to manually subscribe to the keyserver where the LibreWolf’s dev key is, or manually import the key yourself to validate the package.

    Anyway, welcome to the wacky races







  • tetris11@lemmy.mltoScience Memes@mander.xyzdata transfer
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    2 months ago

    3 billion nucleotides, but each nucleotide can be one of 4 bases, meaning that it’s 6 billion bits of info, or (6e9 / 8) = 750 MB of data.

    But if all of the sequence was used for data, then the sperm wouldn’t be a sperm. If we keep the 20,000 coding genes making up ~ 2% of the genome, that still leaves us with (750 * 0.98) 735 MB.

    But an organism is more than its gene templates, it also has functional regions where things bind and block things and join other things, and we’re not entirely sure what percentage of the non-coding regions this is. I’m gonna go with 80%, and that leaves us with (750 * 0.18) = 135MB

    Since the sperm cell is haploid data, it has 23 chromosomes instead of the 46 (23 pairs), so it has half the data redundancy of normal DNA. We might also need to add our own error correcting codes which will reduce some of the space. I’m gonna pull a factor of 3.6 out of my ass, and thus (135 / 3.6) - voila - 37.5 MB