hendrik

A software developer and Linux nerd, living in Germany. I’m usually a chill dude but my online persona doesn’t always reflect my true personality. Take what I say with a grain of salt, I usually try to be nice and give good advice, though.

I’m into Free Software, selfhosting, microcontrollers and electronics, freedom, privacy and the usual stuff. And a few select other random things, too.

  • 2 Posts
  • 466 Comments
Joined 4 months ago
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Cake day: June 25th, 2024

  • hendriktoTechnology@lemmy.worldGoogle signs deal for nuclear energy to power AI datacenters.English
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    Btw, wind turbines aren’t made of concrete, the towers are metal tubes. But the blades are problematic, since they’re made from fiberglass. And solar panels aren’t concrete either. While - if I drive past a nuclear power plant, those are really huge concrete structures. And the problematic things about hydro plants are the reservoirs. It’s flooding a vast area to build a new reservoir and changing the flow in the river that destroys ecosystems. The plant itself isn’t that bad. So ideally you build it into an existing flow of water or use tidal energy instead of building a new dam. I’m not an expert on north american geography, but I bet there are some opportunities left for power plants with a lesser impact on the ecosystem.



  • The question is, why do we look at recycling solar panels, but compare that to nuclear and ignore that these have to be decomissioned and dismantled, too? And the whole process of mining uranium etc. While it may be true that the depleted uranium is low in volume, that’s far from being the actual amount of waste in the end. You’d have to compare the entire lifecycle of the plant to the entire lifecycle of a solar panel. (And solar isn’t the best option anyways.) Also who’s paying for 40.000 years of storage of those 3 cubic meters? The power companies certainly aren’t.


  • hendriktoTechnology@lemmy.worldGoogle signs deal for nuclear energy to power AI datacenters.English
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    Lol. Seems the nuclear lobby is here and down-voting everyone who likes progress.

    I read renewable energy is way cheaper than nuclear energy. And it comes with a low carbon footprint and without nuclear waste. (We have some actual historical numbers in the World Nuclear Report P. 293 which show nuclear is pretty expensive compared to renewable these days.)

    So the solution is pretty obvious. Sign a contract over a few billion dollars with renewable energy instead of nuclear. It’ll be cheaper anyways. And has the added benefit that it’s available now. Whereas the SMR startups still have to figure out a few engineering challenges. And we’d avoid all the nuclear waste that’ll become a problem for future generations. And I mean it’s not that uranium or the other ores are super abundant anyways. Nuclear fission is a temporary solution in the first place. And not a particularly good one.

    And investing in renewable will then grow that industry and make the energy even cheaper.

    Only downside I see is: you can’t build renewable (and the datacentre) anywhere. It’d have to be for example in Texas for solar, or close to the mountains or some water flow for hydro. Or somewhere windy or at the shore for wind energy. The latter two have the benefit that they’re available during the night, too. And I guess the USA has some potential for thermal energy, too. But I don’t consider this a major issue since we have internet pretty much everywhere. They’d just need to lay some more fibre network to the site.


  • I mean they seem to be still figuring this out But isn’t the whole SMR harardous waste after it got decommissioned? That depends a bit on the technology used. But that’d be a huge pile of mildly radioactive steel, plumbing and concrete in addition to the depleted fuel, which is highly radioactive. And as far as I know the re-use to get the rest of the energy out also isn’t solved yet. I mean obviously that should be done. Only taking out parts of the energy and wasting the rest isn’t very efficient.


  • hendriktoTechnology@lemmy.worldGoogle signs deal for nuclear energy to power AI datacenters.English
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    A nuclear fission power plant generates about as much CO2 as wind turbines if you have a look at it’s whole lifecycle. That’s because just operation doesn’t generate CO2. But nonetheless that power plant is made from materials like lots of concrete. It needs to be built, decommissioned, etc. You need to mine the uranium ore, All of that generates quite some CO2. So it’s far off from being carbon neutral. And we already have alternatives that are in the same ballpark as a nuclear power plant with that. Just that the fission also generates this additional nuclear waste that is a nightmare to deal with. And SMRs are less efficient than big nuclear power plants. So they’ll be considerably less “clean” than for example regenerative energy. I’d say they’re definitely not amongst the cleanest energy sources we have today. That’d be something like a hydroelectric power. However, it’s way better than oil or natural gas or coal. At least if comparing CO2 emissions.


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    I’m not so sure about that. We already had to pay a lot of taxpayers’ money to fix bad issues with those storage facilities. And it’s just been a few decades with at least tens of thousands of years to go. That could become very, very expensive. And nasty to deal with for future generations.

    I’d say just burying your waste where no one can see it isn’t a good solution. Neither is just dumping it into the ocean. And knowing a worse alternative doesn’t make it right.

    You’re correct, burning yet more oil and coal and putting that CO2 into the atmosphere isn’t a viable option either. That’d ruin the climate and be unhealthy for us.



  • Since you’re asking for feedback:

    Very good intro and analogy to email.

    I’d delete the sentence with “focusing on Lemmy”, since you’re going ahead and talking about the Fediverse in general in the next sentence, and then Mastodon. And the article is more broad and not really focusing on Lemmy, one paragraph aside.

    There are quite some good paragraphs. Explaining the concepts very well, and without the need for prior knowledge. You also mention protocols, give examples. I think it’s written very well and good to understand.

    I’d add a bit more info on how federation works and the consequences. Earlier on in the text to clarify the terminology. That instances are the interconnected nodes that make up the network. In the background the information gets forwarded between them. Every instance can have it’s own rules and perspective on the network. Cater to specific interests or have a unique design.

    The paragraph on “Openness and Choice” isn’t entirely correct. Users can miss out on posts. Not all posts are visible from all instances.

    I’d add a paragraph that it’s made by the people, for the people. And not for some corporate interests.

    I like you also mention the downsides. I think you should rename “Monitization” into “Funding”. And especially the “slow innovation” is some downside that might not be very obvious. It’s nice to mention that.

    You could also mention the “network effect” because that’s also something we regularly struggle with.

    And that this happens to be powered by Free Software. And we can choose which server software to use and everyone is invited to participate or change things to their liking.





  • I don’t think it’s necessary to distance oneself from doing said roleplay. I bet society is looking down on individuals doing it. But I think it’s perfectly fine. As long as it stays somewhat healthy and no one gets harmed.

    There is a considerable group of people who do roleplay with AI. Or have “virtual girlfriends” or companions. It all started with Replika AI. Nowadays there are other services for that. And these LLMs are made to be lewd and suggestive. Including all kinds of niche interests. You’ll find several articles about it if you google virtual grilfrends or AI companions. It’s more or less being discussed in some niche areas of the internet, since there is a stigma to it.





  • hendriktoAsk Lemmy@lemmy.worldWhat technology purchase felt like a major upgrade in your life?English
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    Sure. I don’t know why they design most of them like that I really can’t be bothered to tap nine times to turn it on. I went to quite some stores and decided on one with two capacitive slider fields. That’s perfectly fine. I just tap somewhere at that slider and it’ll be 1-9 (boost) depending on how far left or right I touch it. Or I swipe. Main thing being, it just takes one tap. Except if I use more than 2 pans, then I have to choose which plate the sliders apply to. Yeah and it’s still the same inconvenience as with every capacitive control field and you can’t place a box of pizzas or anything wet or metal on top of the controls or it’ll complain and start beeping. I learned to place things behind the controls, but guests regularly get scolded by the cooktop.



  • Yeah, cast iron should work well. I also like the usual stainless steel or non-stick pans. I mean these get hot and cold almost immediately and I have good control over temperature. A heavy cast iron thing is made to store the heat and not do that. Depends on what someone is trying to achieve.

    And something that doesn’t work are things that aren’t flat at the bottom. You just can’t have a wok that is completely round and put that on a flat surface. And also thin metals don’t work. So maybe use another cooktop for that. We own a wok that has a flattened bottom. But I don’t really like cooking with that thing. Not sure if it’s me or the wok.


  • hendriktoAsk Lemmy@lemmy.worldWhat technology purchase felt like a major upgrade in your life?English
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    induction cooktop? I’d say dishwasher but that’s probably more plumbing and pumps than “technology”.

    With all the other gadgets, I’m not so sure. I’ve had computers, laptops, phones for ages. Of course my first everything back in the 90s or 00s was a big thing. But since then it’s just the newest generation, a bit faster and with more extras, but noting substancially different.