scythe

37 ms·

511.
by scythe 3y ago
>You bring up an interesting point: why don’t developers build walkable communities in the suburbs or exurbs, or even in brand new cities? Well, it's California, so one part of the answer is probably water rights. In fact you can bu
512.
by scythe 3y ago
Singapore has some serious geographic headwinds. The population density of the whole country is higher than the city of San Francisco. The fact that they are not in constant crisis is already an achievement.
513.
by scythe 3y ago
It is an epistemic error to say "we did something about X, therefore X is not a problem". There are always characteristics of a population that aren't modeled. This is why randomization is considered so important.
514.
by scythe 3y ago
I don't understand. You don't need to fully coat the wall with shotcrete in order to stabilize the rocks. There could still be holes.
515.
by scythe 3y ago
IIRC you can buy titanium foil that you can just make stuff out of at home.
516.
by scythe 3y ago
Wikipedia: >4340 steel is an ultra-high strength steel https://en.wikipedia.org/wiki/4340_steel The alloy composition calls for 0.2-0.3% molybdenum and expects accuracy to within a few per mille for ten elements. Mo
517.
by scythe 3y ago
Steel has a range of strengths. The "most commonly used steel" is probably just mild steel and yeah Ti-6Al-4V is going to be the rough equal of mild steel on strength broadly assessed. But a high strength steel alloy will be three
518.
by scythe 3y ago
Currently the DoE or some other USG agency has been doing a lot of modeling of just pumping CO2 into underground caverns. (It was in Physics Today .)
519.
by scythe 3y ago
Jobs was really unusual in that he was not only a good leader, but also an ideologue with the right obsession at the right time. (Some people like the word "visionary".) That obsession being "user experience". Today it&#
520.
by scythe 3y ago
The article does not describe the cycle life of the battery. This has been a common problem with sodium-ion batteries, so the lack of any statement on this matter is concerning.
521.
by scythe 3y ago
This paper describes Tiamat's battery as Na3V2(PO4)2F3: https://chemistry-europe.onlinelibrary.wiley.com/doi/pdf/10....
522.
by scythe 3y ago
Worth noting that Tiamat's battery is sodium vanadium fluoride phosphate, not sodium ferrocyanide. So, these are not quite the same technology. Vanadium costs a similar amount as nickel and has a higher abundance, but the present-day a
523.
by scythe 3y ago
It's my understanding that weathering steels are avoided for structural applications, since while the corrosion behavior is usually pretty good, it can still be variable and unsatisfactory. There are a few high-profile cases of struc
524.
by scythe 3y ago
As a physicist, I am often in danger of doing this: https://xkcd.com/793/ So: it seems like one of the more obvious faults of pylons is that they are the wrong color. Usually, they are white or grey (etc) which does no
525.
by scythe 3y ago
- cperciva (also submitter of this post) now head of the releng team
526.
by scythe 3y ago
I can't help but notice the resemblance to https://h2fly.de/ -- do you have any major differentiators in mind, or are you planning to try to beat them head-on?
527.
by scythe 3y ago
Microsoft is not just any huge, lumbering company, though. It has probably the best history of research of any pure software company (leaving aside IBM etc): Microsoft Research funded Haskell behind the scenes for years, they had a quantu
528.
by scythe 3y ago
Microsoft? Not a walled garden? I think it only seems that way because the open-source world has worked much harder to break into that garden. Apple put a .mp4 gate around your music library. Microsoft put a .doc gate around your business
529.
by scythe 3y ago
There is no solid evidence that Setskever instigated the firing beyond speculation by friends who suggest that he had disagreements with Altman. It could just as well have been any of the other board members, or even a simple case of groupt
530.
by scythe 3y ago
Understanding the particular meaning of each balance-sheet category is hardly pedantry at the level of business management. It's like knowing what the controls do when you're driving a car. Profit is money that ends up in the bank
531.
by scythe 3y ago
The last time that Israel was seriously threatened by the Arab countries was in the Yom Kippur War of 1973. Anyone old enough to remember that clearly is also old enough to retire. Since then the pattern has been that Israel retaliates mass
532.
29.9%-efficient, commercially viable perovskite/CIS thin-film tandem solar cells(sciencedirect.com)
1 points by scythe 3y ago|0 comments
533.
by scythe 3y ago
The authors are rather unfair to modafinil, also, lumping it in with the other two even though the negative "effects" of modafinil were not statistically significant (except in the rather dubious case of the rank testing of "
534.
by scythe 3y ago
>If I recall correctly, the terrorists attacked the US because they "don't like freedom". The funny part is how close, and yet how far, this is to/from the truth. You know that old quip about freedom versus security?
535.
by scythe 3y ago
> Far right white supremacism; libertarianism for white men, forced birth for white women. Eugenics for everyone else. Writing tip: don't make laughably false claims above the fold. You expect me to believe that the prevailing opini
536.
by scythe 3y ago
"We went to the moon" is a historical claim, not a scientific one. Correspondingly, my belief in it is similar to my belief in the rest of history: it seems like the more difficult lie. Getting everyone involved in faking the moon
537.
by scythe 3y ago
>However, the type of uranium fuel those reactors use is not going to cut it for the advanced reactors expected to go on line in the coming years If you're like me, you read this sentence and thought: "hey, wasn't that can
538.
Underfloor heating with latent heat storage(journals.sagepub.com)
3 points by scythe 3y ago|0 comments
539.
by scythe 3y ago
I used to work in radiation oncology and I was treated with chemotherapy for testicular cancer. This study specifically states that the diet was used after the patient was treated with radiation and chemo. Anyone who has ever been anywher
540.
by scythe 3y ago
It depends on the ambient temperature. Heat pumps can obtain a coefficient of performance of about 2.5 in very cold conditions (-20 C) or as much as 5 in warmer conditions (+5 C). In theory, you could get even better performance by using a

More ›