scythe

47 ms·

661.
by scythe 3y ago
I would suggest reading the high-ranked Google Scholar results rather than a highly fraught and questionably influenced Wikipedia talk page or a blog by a highly opinionated author. http://scholar.google.com/scholar?q=younge
662.
by scythe 3y ago
Copper sulfide's diamagnetism is not that high. It would be notable if it were. So that isn't a possible explanation. Cu2S was suggested as a culprit for the observed conductivity changes. The preprint reporting the high value of
663.
by scythe 3y ago
One of the papers that argued that LK-99's levitation was due to mixed diamagnetism and weak ferromagnetism also assigned it a very strong diamagnetism: -2•10^-4, which would make it the second-strongest such material known, beating ou
664.
by scythe 3y ago
>In almost all applications of superconductors, they don't use high-temperature ones for one simple reason: Material properties. The problem is that this is not true anymore. It was true when I was in high school. Modern methods of
665.
by scythe 3y ago
>As every other first-world country has done at this point. This is simply not true, and there is another option that deserves to at least be mentioned: http://en.wikipedia.org/wiki/All-payer_rate_setting
666.
by scythe 3y ago
Would be awkward for moving sports. My first thought upon seeing this was that it would be a real improvement in the Melee reaction tech-chasing meta.
667.
by scythe 3y ago
From a practical point of view it is probably good to have an international lingua franca , most likely a variation of English not only due to its current popularity but because it has accommodated a lot of simplifications [1,2] to make it
668.
by scythe 3y ago
A ferromagnetic oxide featuring copper as the sole transition metal would be very weird. I'm not aware of any examples of the copper block demonstrating ferromagnetism without a more "conventional" ferromagnetic transition me
669.
by scythe 3y ago
Good question. The paper says 0.1 mmol per liter, i.e. fruit is sprayed with a solution containing about 23 milligrams per liter of melatonin. It's possible that the amount retained would be less than a few milliliters of solution equi
670.
by scythe 3y ago
I do think, though, there's a place for terminology that carries a negative valence but still allows the speaker to sound dignified.
671.
by scythe 3y ago
I think that "extractivization" may be a more descriptive possibility. I.e. we are describing a phenomenon whereby a platform is changed from a strategy of increasing its user base to one of extracting value from its userbase. C
672.
by scythe 3y ago
Most of the places I have seen posting this data have missed what I think is the major story here: >Public preferences were more evenly divided on this question in fall 2019, a few months before the coronavirus outbreak. COVID-19 caused
673.
by scythe 3y ago
The current is ridiculously large and would lead to an unacceptably high power consumption and thermal expansion with the resistivity of even a good metal (copper).
674.
Tell HN: I think I found Toyota's battery
529 points by scythe 3y ago|203 comments
675.
by scythe 3y ago
>Assuming this is all true, why is it just now coming to light? Did they just not know what they had? This is why the calculations by Sinéad Griffin looked so interesting to me: they suggest that the superconductivity depends on an uncon
676.
by scythe 3y ago
I'm glad to hear that I'm not the only one who thought that the DFT computational preprints were very promising. Unfortunately, they also indicate that the desired substitution will be very hard to achieve — crucially, the &quot
677.
by scythe 3y ago
I got a similar impression from the XRD spectra, but I don't think it's correct to focus on the shifts. That could easily be a minor calibration issue. The biggest difference I see is in the peak around 44 degrees, which is very p
678.
by scythe 3y ago
I'm not an expert on chemistry but it sounds like this would make it ridiculously hard to obtain a high quality sample. Copper can substitute for either lead site; I'm not aware of macroscopic processes that would favor one over t
679.
by scythe 3y ago
>My #1 excuse was always sleep. Weed is the best sleep aid I've ever found. I started smoking weed to get to sleep when I was in a crappy college dorm with those awful cheap Venetian blinds and a streetlight outside the window that
680.
by scythe 3y ago
>The thing that I don't understand is that I thought "normal" marijuana always needed to be heated anyway I can confirm, as I had a rather disappointing failure (many years ago) in making some edibles when they didn't
681.
by scythe 3y ago
The article you linked doesn't mention anything about Korea not having won any Nobel prizes, though?
682.
by scythe 3y ago
Norman's complaints that lead atoms are too heavy do not seem consistent with the composition of other known superconductors. As far as I know, the most widely used cuprate superconductor is bismuth strontium calcium copper oxide (BSCC
683.
by scythe 3y ago
For a region with relatively low population and big mountains, this is surprising. Sure, Florida built Brightline, but Miami plus Orlando alone equals the population of Portland + Seattle + Vancouver... on flat ground, with few changes to a
684.
by scythe 3y ago
VC money is tight right now, and Twitter was never profitable. If I were an investor, you'd have to have some kind of revenue story if you were selling me a Twitter killer. Mastodon works for the people who are willing to "pay&quo
685.
by scythe 3y ago
I haven't looked it up, but I'm sure the magnitude of thermal cycling in a battery is way less than in a combustion engine.
686.
by scythe 3y ago
Change like this happens at the margins. Families already moving will choose one district over another due to factors; people faced with the possibility of moving (job offer) will take it or decline due to factors. Over time, these effects
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by scythe 3y ago
Lead is absurdly cheap. One dollar a pound! Cheaper than much more common metals like aluminum or magnesium. So I diagnose a low demand. They used to talk about using barium cement but it just can't compete, price-wise.
688.
by scythe 3y ago
It's true that pyrolytic graphite does this, but it's also worth noting that pyrolytic graphite is one of a very few materials that has such a strong conventional diamagnetism: the list includes pyrolytic graphite and metallic b
689.
by scythe 3y ago
In particular, lead is still extremely common in radiation shielding, possibly because the drop in demand for other applications made it so cheap. Lead-lined drywall is the default approach for setting up a radiography, fluoroscopy or CT su
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by scythe 3y ago
A list that includes John and Samuel Adams and Alexander Hamilton, who eventually cajoled all of the other Founding Fathers into condemning slavery and (except for Madison and Jefferson) freeing all of their slaves.

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