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Joined 1 year ago
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Cake day: July 8th, 2023

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  • DaddleDew@lemmy.worldtoScience Memes@mander.xyzjealousy
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    9 days ago

    Before we cut our food in perfectly sized bites with utensils our ancestors used to do it by biting into large pieces of food with their front teeth. That would wear them down evenly to form a nice flat bite.

    I wouldn’t be surprised if that’s the skeleton of someone who died way younger than we think as well.


  • DaddleDew@lemmy.worldtoScience Memes@mander.xyzDeficiencies
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    1 month ago

    NGL, I’ve spent a decade wondering why I couldn’t sleep at night and couldn’t concentrate all day, only to finally realize I was constantly low on electrolytes because of my intense exercise routine.

    And if anyone is wondering, sports drinks are worthless sugary drinks shrouded in “sporty” marketing. Vitamin D, Calcium and Magnesium is what helped me (and are far more cost efficient than sports drinks). Consult a doctor.






  • DaddleDew@lemmy.worldtoScience Memes@mander.xyzWhales
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    3 months ago

    As sound travels through a water layer where the speed through which it travels varies with depth, the sound will tend to refract towards where it is the slowest.

    A layer where temperature decreases as depth increases will refract sound downwards. A layer that has the inverse temperature properties will do the opposite. A layer that is isothermal (where the temperature remains constant as depth changes), will still tend to refract sound upwards because the increase in pressure also increases velocity, although not as strongly as temperature does, which is why temperature differences can easily overcome this effect where the water is not isothermal.

    If you have a layer that refracts sound downwards on top of a layer that refracts sound upwards, you just created a sound channel, which acts as a wave guide in which sound will remain trapped and travel far longer distances horizontally before dissipating.

    Ultimately you can’t really put a number on the required temperature differences because there are many other factors to take into account like how steeply the speed of sound changes, how tall the layer(s) are, what is the frequency of the sound, or how much of it you want to remain “trapped” in the sound channel.


  • DaddleDew@lemmy.worldtoScience Memes@mander.xyzWhales
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    3 months ago

    How well sound propagates through water is highly dependent on the water temperature variations over depth. There can be conditions in which sounds can be trapped between two different horizontal “layers” and travel far greater distances than 80km.




  • If you look back at the sci-fi movies that came out soon after lasers were invented, you could see that people had all sorts of crazy ideas of what a laser could be used to do and that a lot of them had absolutely no idea of what a laser really did. Ultimately, we’ve found out that most of those imagined uses were pure bullshit or extremely impractical, at least with the current state of the technology. It didn’t mean that the technology was useless. We ended up finding all sorts of useful purposes for it that they had never imagined, like disk players or barcode scanners. It only means that it took time for people to better understand what the real world applications of the new technology was and a lot of the initial assumptions were dead wrong.

    AI is going through the same process. It will take time before the technology’s strengths and weaknesses are better understood by the masses so it can be better applied to more realistic uses. And for the commercialization of snake-oil applications for it remains confined to fringe markets.


  • DaddleDew@lemmy.worldtoScience Memes@mander.xyzbugs
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    5 months ago

    That’s a typical case of someone who is so eager to sounds right in an argument that they will not bother double checking to see if they missed the original point or true meaning before replying.

    There are a lot of people like that on Reddit. Well, I assume there still are I deleted my account a while ago. What a toxic place.


  • I was hesitant for a long while and ended up installing Linux Mint on an old SSD I had laying around this way there was no commitment.

    Now I’m realizing I haven’t booted up my regular windows 10 drive ever since and am considering getting rid of it altogether.

    On a side note I created a virtual machine on the Linux side that runs Windows 10 LTSC on it for a few other programs I sometimes need that would be very difficult or impossible to make work on Linux like Inventor, Office and Photoshop. It lives trapped in the box and isn’t allowed to connect to the internet. If I need to download something for it I download it on Linux and drag and drop it into the box. It’s like having a little pet Windows that you keep locked in a pen, so it works for you and only for you and it can’t escape to go into your house to spy on you and shit bloatware all over your carpet.





  • I have a Lexmark black and white laser printer which I’ve used lightly for years (went through one and a half paper packs so far) and it’s still going strong with the original toner cassette. And when I’ll need to replace it I know there are third party cassettes available on the market for it which are substantially cheaper than OEM. I bought it to replace a Brother inkjet printer which was just an ink/money pit despite being a Brother. Inkjet is absolute crap no matter the brand. HP makes it even worse with a ton of assholeish DRM layered on top.

    Ultimately there are two big things to avoid: inkjet and HP. Look up a laser printer and make sure that there is third party cassette support for it before you buy. Brother is apparently good in laser but don’t necessarily limit yourself to that brand.