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Cake day: July 31st, 2023

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  • crapwittyname@lemm.eetoTechnology@lemmy.world*Permanently Deleted*
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    19 days ago

    Your comment doesn’t stand up. It seems you’ve got something against fusion energy for some reason.
    On cost: it’s a best guess, since we don’t yet have a working fusion reactor. The error bars on the cost estimates are huge, so while it is possible fusion will be more expensive, with current data you absolutely cannot guarantee it. Add to that the decreasing costs as the technology matures, like we’ve seen in wind and especially solar over recent decades.
    On nuclear physics PhDs: that’s no different to any energy generation, you need dozens of experts to build and run any installation.
    On waste: where are you getting this info on the blanket? The old beryllium blanket design has been replaced with tungsten and no longer needs to be replaced. The next step is to test a lithium blanket which will actually generate nuclear fuel as the reaction processes.
    This is the important fact that you have omitted, for some reason.

    Nuclear fusion reactors produce no high activity, long-lived nuclear waste. The activation of components in a fusion reactor is low enough for the materials to be recycled or reused within 100 years

    And that is why it’s so important this technology is developed. It’s incredibly clean and, yes, limitless.

    As for your advice, there was a time not long ago when we didn’t understand how to build fission plants either, and it cost a lot of time and money to learn how. I wonder if people back then were saying we should just stick to burning coal because we know how that works.






  • Physical pain? I’ve had a spinal tap, countless perforated eardrums, dental nerve pain, broken bones and dislocated joints. You might consider me quite unfortunate and each of these is a story in itself. (The burst eardrum is definitely the worst of these, in severity and relentlessness) So anyway, I’m no stranger to physical pain.

    BUT, I’m even more unlucky in that I suffered from a pretty rare condition called recurrent corneal erosion syndrome for three years after somebody poked me in the eye accidentally whilst he was trying to do the Saturday Night Fever move.
    It’s hard to describe the pain, but I’m told it’s a contender for the most painful condition known to medical science. A woman once popped her own eye out with a spoon rather than continue to live with the condition. The cornea (layer of transparent tissue covering the pupil/iris) is pretty bad at repairing itself. Like the other tissues in your body, it attempts to bond with nearby tissue when it’s ruptured. (Think on how a cut on your hand heals). Except with RCE, the cornea preferentially adheres to the eyelid instead of itself. So, when you sleep, the front of your eye “heals” onto the eyelid, and then it tears open when you next open your eyes. Each time you sleep, the wound gets worse, until you can no longer open or close your eyes without agonising pain. So you are utterly sleep deprived, unable to blink for fear of the worst pain you’ve ever experienced every single time you do, and it hurts a good amount constantly anyway. It’s as good an example of your own body torturing you as you could ask for. And it goes on and on and on. There’s only one treatment which works, which is a type of laser eye therapy, for which the expense is very high. So I had to wait 3 years. The only way I managed to continue functioning was when I was allowed anaesthetic eye drops, which became like the air in my lungs. I would have to beg for them regularly, and I never had enough. Every night and morning I had to remember to squirt gel into my eye before closing/opening it, which would stop the healing effect IF I was lucky. Had the laser therapy not worked I don’t know what I would’ve done. It’s been eight years now, but it’s “recurrent”, so there’s no guarantee it’s gone for good. I wear glasses that I don’t strictly need now, to make sure my eye is at least partially protected at all times. Sometimes, especially if I’ve drunk alcohol and I’m dehydrated, I get a little reminder that it’s there. I live in fear.




  • It looks like it given the symbols used. P for pressure, rho for density etc. u-arrow is definitely a vector field, so it could be fluid flow. Otherwise it could be equally anything described by a vector field, like electromagnetism or gravity but they usually have a lot more E and G involved I think. I used to solve these but then I got a certificate so now I don’t have to.


  • There definitely is an element of people just not liking it because it’s new, but there’s also an element of not getting any say in it whatsoever.
    Also, they really do get in the way. They make it harder to get a good seal between your mouth and the bottle at any angle, and at the top they hit your nose. They are slightly harder to use, especially if you’re using one hand for any reason, including if you only have one hand. Removing them without tools results in a sharp bit of plastic which pokes and irritates your skin.
    Finally, this is another patronising effort which makes consumers lives more difficult (by whatever amount) while not doing enough to combat plastic waste.






  • There’s some faulty reasoning here.
    Parent comment challenges the assumption that the marks were made by a female, and you say “you’re the reason the professor felt the need to give this example”, although the example was given in order to challenge assumptions of gender.
    OP is actually learning from the example if anything, since they are challenging gender assumptions.
    On top of that, your use of “you guys”, and your generalisations about men are evidence of the exact type of biased thinking this example is trying to challenge.


  • crapwittyname@lemm.eetoTechnology@lemmy.worldBoeing: Last Week Tonight
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    8 months ago

    It’s not extremely pro aeroplane, because if a plane crashes there are 100x more fatalities than in a car crash. Even so, there are more than 100x more fatalities in cars.
    It makes sense that flying is safer because it’s so strictly regulated. People are able to drive tired/sick/hungover but pilots aren’t. Your car can have a fault that you haven’t noticed where planes can’t.* There’s a crew operating the plane as opposed to a single driver.

    *The exception proves the rule on this one




  • crapwittyname@lemm.eetoTechnology@lemmy.worldBoeing: Last Week Tonight
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    8 months ago

    Commercial flying remains the safest way to travel, and it continues to get safer. That’s not to minimise your reluctance to fly. I get it: if something goes wrong it’s 99.9% sure you’re going to die, and know about it long enough for your last moments to be horrifying. But the facts is the facts and the facts is that you’re way more likely to die on a bicycle journey.