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Joined 1 year ago
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Cake day: July 20th, 2023

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  • I’m not a meteorologist, but I do know a thing or two about plasma.

    Plasma is very short lived. Think on the order of microseconds at atmospheric pressures. So unless there was a massive linear source of power along the whole length, this isn’t plasma.

    The visual effects probably have to do with the fact that the sun was very low. I’m guessing the particle size distribution in that line is notably different from the size of particles in the clouds surrounding it, leading to much stronger reflection of evening light.

    I am curious as to the meteoroligical explanation for the line though.


  • Did you measure voltage drop across the pump while it’s trying to start up? The voltage will only drop when there’s current being drawn. So with the pump off you would see full supply volts even on a highly resistive line. You could try lugging a battery down to the pump, and jump it to get it started, then remove the battery jumpers but keep the pump running on your main run, then measure the volts across the pump.

    Or you could try to measure the resistance of your wiring with your meter. You would disconnect it from your 12v source, then short the pump side, then measure the ohms across the pair at the source side. Also measure the resistance across your pump windings when it is disconnected, but with the switch on.

    I’ll throw out some example numbers. Say you have a pump that says it needs 6 Amps. Chances are the inrush current is more like 12A. If you measure across the terminals with the pump disconnected from power with the switch closed, you might measure around 1 Ohm. Now if you measure your very long supply line and get 2 Ohms. Then you would only get 12V/(1+2 )Ohms = 4 Amps through the whole system. With the pump drawing 4 Amps you would only see 4V at the pump terminals when it is already running.







  • All of the OP’s points could be said about church sermons as well, and yet there’s still thousands of church gatherings every week.

    So I think your point hits the nail on the head. People don’t go to these large gatherings because they’re looking for a presentation of convincing arguments, books and recordings are better for that. They go to experience the sense that they are part of something bigger than themselves. They want to feel like they are contributing to something important, and a large crowd all in unison makes them feel that way. Rallies aren’t meant to change minds, they’re meant to get the base excited to donate/ volunteer/ talk to anyone who will listen.






  • I definitely agree with you, however, I think needing to become self sustaining on earth is a goal that would be well served by trying to design a self sufficient system for mars.

    Earth is big enough that it’s really easy to forget we’re all in the same fish bowl. Entire cities can flush their shit down the river and as far as they are concerned, nothing bad ever happens to them. The scale of earth makes us blind to the problems our actions and methods cause. The ecosystems also do quite a bit to protect us from our own actions

    You can’t ignore externalities in a space colony. Everything must be accounted for. That is what makes it so difficult to design for. Any small amount of waste will still accumulate over time and eventually becomes a problem.

    The tighter scope and strict requirements of a space colony would make it easier to actually objectively measure how sustainable it is. You would know exactly how much external inputs you are delivering each year. We can then take the lessons and technologies that are absolutely required in a space settlement and use them to inform how to better be sustainable on earth. For example, solar cells used to only really be used on satellites, not because they were great on satellites, but because they were pretty much the only option that could stay operational for years. Now PV power generation is helping countries all over the world become a little more sustainable. The harsh requirements of space make us better at problem solving.

    I totally agree that earth is our only option for species survival though. Anyone selling Mars as a “backup” for humanity is either delusional or a con man. I think developing the capability to keep a settlement on Mars is a worthwhile endeavor, but there is no way for humanity to thrive there. Any large scale catastrophe on earth will still be more survivable in select pockets on earth than anywhere on Mars.


  • Fermion@feddit.nltoTechnology@lemmy.world*Permanently Deleted*
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    15 days ago

    There’s no risk for a factory condition unit. This rumor started after people with units that had been dissasembled and reassembled had issues with vertical orientation. It turned out that it’s very easy to mess up the seals that keep the liquid metal thermal interface in place. So units that had been previously taken apart had liquid metal slowly leak, causing overheating and/or shorting.

    If you haven’t taken the cooler off the mainboard, using the vertical stand is just fine. I haven’t seen any evidence of factory assembled units suffering leaking. It does imply that user servicing of ps5’s is a bit risky, and you might need to be wary of used units where you don’t necessarily know the service history.

    To avoid unnecessary confusion, taking the covers off to add an m.2 ssd does not add any risk.





  • Fermion@feddit.nltoAsklemmy@lemmy.mlAm I insane?
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    17 days ago

    Do you want some discouragement?

    Stainless steel is stains less not rusts never. You would need additional measures to keep the stand from degrading over thousands of years. Your local archeology department could give you some pointers on how to accomplish that.

    Or maybe you design the stand in such a way that the tungsten object is held firmly, but still easily visible in rusty stainless jaws.