elihu

56 ms·

571.
by elihu 4y ago
I suppose I should have clarified that I meant "lake Mead if at capacity" which it isn't. Stored energy (in a fixed gravitational field) is the product of height and mass. Hoover dam has a "hydraulic height" of 576
572.
by elihu 4y ago
At least Morocco/Algeria/Libya/Egypt/Tunisia don't have nuclear weapons or large conventional militaries and aren't generally much of a threat to anyone but themselves and sometimes their immediate neighbors. T
573.
by elihu 4y ago
The grid can be balanced by the application of market forces. (If there's an electrical shortage, prices go up. If there's a surplus, prices go down. The incentives are all there to encourage producers to produce power during s
574.
by elihu 4y ago
I'd imagine we'll probably continue to store power the same way the vast majority of power is stored now, using pumped hydroelectric storage.
575.
by elihu 4y ago
It'd be expensive, but it's technically feasible. I'd also expect there's economies of scale involved; building a cable with twice the capacity doesn't cost twice as much; you might even just use the same cable and
576.
by elihu 4y ago
Now that the paperwork has been done once, does that mean it'll be a lot cheaper/easier/faster to build additional plants with the same design?
577.
by elihu 4y ago
Pumped hydro storage, batteries, and/or long-distance grid interconnection. It's not often overcast in the Sahara, as far as I know, and solar power imported from far to the east and west can mitigate the day/night cycle pro
578.
by elihu 4y ago
Batteries will probably be cheaper, but pumped hydro storage will probably cost about the same since it's a mature technology. I could see Norway or Switzerland being major players in pumped hydro storage, given their geography. Awhile
579.
by elihu 4y ago
I think it's fine if governments pay for and operate power generation facilities, but at the same time I don't think private companies should be prohibited from building power generation facilities if they want to and they think t
580.
by elihu 4y ago
> Once operating, the two new units, which will be clean energy sources that produce zero air pollution, are expected to power more than 500,000 homes and businesses. I wondered how much actual power that was. More context is on wikiped
581.
by elihu 4y ago
An interesting bit from the article: > Ironically, as the world reduces coal burning to curb the carbon dioxide emissions that cause global warming, we’ll also be eliminating the sulfur dioxide emissions that mask some of that warming. &
582.
by elihu 4y ago
You could. That would be a reasonable thing to do. I suppose you could even do an iterative process: rescale, remove the lowest-scoring candidate, rescale, remove the lowest-scoring candidate, and so on until there's a winner. That&#
583.
by elihu 4y ago
I'd heard of Kuril islands dispute. The "northern territories" are apparently the four of the Kuril islands that Japan claims as their own but Russia occupies. https://en.wikipedia.org/wiki/Kuril_Islands
584.
by elihu 4y ago
> "And, more importantly, RCV is a stepping stone to multi-member district STV proportional voting" I agree that proportional representation is a huge deal, but I suspect we can do better than STV by changing what the election
585.
by elihu 4y ago
> "I also thought that having a borda count as the method of eliminating the "last place" choice in each IRV round would be kinda nifty." That is a real thing. I don't remember the name for it though.
586.
by elihu 4y ago
Score voting (also known as range voting) is not a very good system to use in a real election because there's a huge risk that, on a scale of 1 to 10, the extremists will all give their candidate a score of 10 and everyone else 1, wher
587.
by elihu 4y ago
"Bullet voting" (voting for only one candidate) isn't usually even a smart strategy to maximize your influence in an approval voting election, despite fairvote.org's claims that it is.
588.
by elihu 4y ago
> There was a site posted to HN years back that mathematically analyzed a ton of these voting schemes, I cannot seem to find it on Google but it was some sort of hybrid scheme that apparently has the best overall outcomes. It might have
589.
by elihu 4y ago
The problem with RCV is there's a big difference between giving an honest opinion and voting tactically. In RCV it's safe to put your first choice first if either they're an overwhelming favorite to win, or they're so we
590.
by elihu 4y ago
It really depends on how far you are from the nearest blasts, and how big they were, and which way the winds are blowing. Even in a massive nuclear exchange, there will still be places in the United States hundreds of miles from the neares
591.
by elihu 4y ago
Nuclear War Survival Skills (1987) has a lot of suggestions about what to do: https://ia800501.us.archive.org/35/items/NuclearWarSurvivalS... I'm no expert, but I think the general idea is: don't be caug
592.
by elihu 4y ago
I agree it makes sense for ships to use hydrogen. You might have a point about power density of fuel cells being too low for aviation. I don't think batteries will work for aviation except for very short flights, unless there's
593.
by elihu 4y ago
I bought a bunch of LFP cells a couple years ago to do an EV conversion of a Mazda RX-8. After a couple years of literally just sitting there, they went from about 3.2 volts to about 3.1 volts. Tesla cell chemistry is different (unless you
594.
by elihu 4y ago
I think the point is that if battery technology is good enough, it's not the limiting factor. Being able to deliver that much power becomes a bottleneck. At some point the owner of the parking lot will have to upgrade their electrica
595.
by elihu 4y ago
Nearly all houses these days have electrical outlets. A 110 volt 20 amp circuit isn't the most ideal way to charge an EV, but it can work. Most houses have 220 outlets, and adding one to the garage is no big deal. Few people will ev
596.
by elihu 4y ago
Hydrogen fuel cells can't compete with battery EVs on energy efficiency, if the hydrogen is produced from electricity by electrolysis. (Most hydrogen is made from natural gas.) Hydrogen beats batteries in terms of energy density, so m
597.
by elihu 4y ago
Because an opinion by itself doesn't add much to the discussion, if we don't know why that opinion is held. As far as I understand it and as stated the post text up top, the protesters are protesting because a woman died in the cu
598.
by elihu 4y ago
I think it was more about Germany being able to buy gas straight from Russia without having to pay fees to Poland/Ukraine/Belarus/whoever for transporting gas through their territory.
599.
by elihu 4y ago
> Would some special forces with diving equipment and a fishing boat be enough? Might not even need divers. Just a fishing boat, a GPS, a limpet mine, and a few hundred feet of rope. Dangle the mine in the water at the right depth as y
600.
by elihu 4y ago
There's a theory I've seen that Russia could have sabotaged Nord Stream to evade breach-of-contract penalties for shutting off gas. I don't know how credible that theory is though, and there are plenty of alternative parties

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