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  • DIY experimental Redox Flow Battery kit

    Technology technology
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    37 Stimmen
    3 Beiträge
    33 Aufrufe
    C
    The roadmap defines 3 milestone batteries. The first is released, it's a benchtop device that you can relatively easily build on your own. It has an electrode side of 2 x 2cm2. It does not store any significant amount of energy. The second one is being developed right now, it has a cell the size of a small 3d printer bed (20x20cm) and will also not store practical amounts of energy. It will hopefully prove though that they are on the right track and that they can scale it up. The third battery only will store significant amounts of energy but in only due end of the year (probably later). Current Vanadium systems cost approx. 300-600$/kWh according to some random website I found. The goal of this project is to spread the knowledge about Redox Flow Batteries and in the medium term only make them commercially viable. The aniolyth and catholyth are based on the Zink-Iodine system in an aqueous solution. There are a bunch of other systems though, each with their trade offs. The anode and cathode are both graphite felt in the case of the dev kit.
  • AMD warns of new Meltdown, Spectre-like bugs affecting CPUs

    Technology technology
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    69 Aufrufe
    anyoldname3@lemmy.worldA
    This isn't really the same kind of bug. Those bugs made instructions emit the wrong answer, which is obviously really bad, and they're really rare. The bugs in the article make instructions take different amounts of time depending on what else the CPU has done recently, which isn't something anyone would notice except that by asking the kernel to do something and measuring the time to execute affected instructions, an attacker that only had usermode access could learn secrets that should only be available to the kernel.
  • 109 Stimmen
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    57 Aufrufe
    L
    Yeah, I agree. It's a great starting place. Recently I needed a piece of information that I couldn't find anywhere through a regular search. ChatGPT, Claude and Gemini all gave a similar answers, but it was only confirmed when I contacted the company directly which took about 3 business days to reply.
  • Musk's X sues New York state over social media hate speech law

    Technology technology
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    12 Aufrufe
    Niemand hat geantwortet
  • autofocus glasses

    Technology technology
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    53 Beiträge
    251 Aufrufe
    M
    Hm. Checking my glasses I think there is something on the top too. I can see distance ever so slightly clearer looking out the top. If I remember right, I have a minus .25 in one eye. Always been told it didn't need correction, but maybe it is in this pair. I should go get some off the shelf progressive readers and try those.
  • The Internet of Consent

    Technology technology
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    11 Aufrufe
    Niemand hat geantwortet
  • 87 Stimmen
    10 Beiträge
    56 Aufrufe
    T
    If you want to stay on the bleeding edge you've got to be a reversal of Europe, which means allowing innovation and competition. Hence why VT is nearly 70% US.
  • 141 Stimmen
    4 Beiträge
    30 Aufrufe
    P
    The topic is more nuanced, all the logs indicate email/password combos that were compromised. While it is possible this is due to a malware infection, it could be something as simple as a phishing website. In this case, credentials are entered but no "malware" was installed. The point being it doesn't look great that someone has ANY compromises... But again, anyone who's used the Internet a bit has some compromised. For example, in a password manager (especially the one on iPhone), you'll often be notified of all your potentially compromised accounts. [image: 7a5e8350-e47e-4d67-b096-e6e470ec7050.jpeg]