hwillis

48 ms·

541.
by hwillis 5y ago
why does removing carbonates cause the ocean to absorb more CO2, though? Calcium and magnesium oxide aren't just floating around the ocean waiting to absorb more CO2. Removing salts does not lower oceanic acidity.
542.
by hwillis 5y ago
Author makes some interesting parallels to infernal combustion engines not being possible without machine tools. The Antikythera mechanism was built 1800 years before the first metal lathe. It is a fantastically sophisticated[1] clockwor
543.
by hwillis 5y ago
Charge rate is independent of capacity. A 3 C battery charges in 20 minutes, whether it's 1 kWh or 7 kWh. If you have 7 batteries, each charges in 20 minutes.
544.
by hwillis 5y ago
No. The histogram changes: https://computergraphics.stackexchange.com/questions/4212/wh... Higher dimensional simplex noise has a lower-contrast distribution , not just lower contrast values. If you just naivel
545.
by hwillis 5y ago
Here you go: https://computergraphics.stackexchange.com/questions/4212/wh... It isn't just a matter of values clustering around the average; values aren't evenly distributed so just scaling doesn't
546.
by hwillis 5y ago
Really underrates how significantly more nicely simplex tiles than Perlin. With Perlin you have to use MUCH larger maps to get patterns that do not look repetitive. The continuous gradient function is also extremely important for 3d graphi
547.
by hwillis 5y ago
The standard is beyond a reasonable doubt, not probable. So that's the correct way to describe the evidence.
548.
by hwillis 5y ago
The presumption was that the items would have Lee's DNA on them and they did not.
549.
by hwillis 5y ago
> If you are wiring all 1826 cells in parallel, that means you need 1826 battery controllers to achieve reasonable life and reliability. NB that I'm an electrical engineer and have built many batteries before, including from 18650s.
550.
by hwillis 5y ago
More computationally intensive, yes- but computationally intensive may mean "running on smartphones in the background for .1% reduction in battery time" or "a medium-sized country". Increased cost is certainly not so str
551.
by hwillis 5y ago
High power batteries aren't like high power engines. They're built on the same production lines. High power engines prioritize power over cost; high power batteries just prioritize it over capacity. It's not challenging to
552.
by hwillis 5y ago
Bitcoin picked centralized, slow, and expensive. Most mining is done in giant warehouses, and the whole point is that more computing power results in zero faster processing. It remains to be seen if there are good ways to do distribute
553.
by hwillis 5y ago
You are correct, but for the wrong reason. Bitcoin's energy consumption[1] does not track with the number of transactions[2]; energy consumption has significantly increased while the number of transactions has not. What the energy
554.
by hwillis 5y ago
> Hydrogen cars have tiny batteries that don't need to support fast charging. Because that's what they think consumers want, not because of technological limitations. Size is not a requirement for high power batteries. The Po
555.
by hwillis 5y ago
There is! Here's what it sounds like: https://www.youtube.com/watch?v=2dgzKW8EKMc Hydrogen is more energy-dense than gasoline, but it's much more of a pain in the ass. Gasoline is far denser than air but hydroge
556.
by hwillis 5y ago
While it's true that you could add probably double the H2 storage to most HFC vehicles, I think this is the correct take. The Mirai's fuel tank is 37.25 gallons/141 liters vs 12-15 gallons/45-55 liters of gasoline for
557.
by hwillis 5y ago
var is a terrible example of that. Just don't use it. A good example would be the scoping in for loops and maybe arrow functions. For loops are goofy but virtually never an issue, and arrow functions are awesome.
558.
by hwillis 5y ago
To put those phrases in context, I think they would have required more effort than the Apollo project. > Obviously, although I have doubts that the computations being performed by these "GPU solvers" really require a modern cus
559.
by hwillis 5y ago
on the higher end: https://lga-consultants.com/seven-global-car-makers-kpis-par... but nothing absurd. Note that trying to compare 2020 data will obviously be extremely wonky.
560.
by hwillis 5y ago
seems a little goofy to put credits at the top and not in order of size like the rest of the chart, but that's my only criticism. It does a good job illustrating that the fact that profit ~= credits is largely coincidental
561.
by hwillis 5y ago
They also spent $1,491 million on R&D. "Much" is more correct than "almost all", which implies that profit is just the leftovers once expenses are subtracted. Profit and expenses are choices ; the fact that a firm
562.
by hwillis 5y ago
They may also be referring to the McDonnell Douglas DC-X. It flew and landed itself in 1996, but it was heavily based on the 1967 Douglas SASSTO. Neither project was government funded or ordered. There's no particular reason to think
563.
by hwillis 5y ago
> At far distances gravity is higher than expected for black holes compared to regular stars. If it doesn't follow the square-cube law in the far field, it violates conservation of energy and creates a whole bunch of situations that
564.
by hwillis 5y ago
Your theory is that at far distances black holes act like normal gravity wells, and at near distances the gravity is lower (or higher?) than would be expected for the real mass. This is directly contradicted by evidence specifically for the
565.
by hwillis 5y ago
50, 38.5, and 27.5 nm. The "transistor-y" part is the inner bit, so you don't count the isolation distance between transistors, which still makes up part of the area. To be more specific, one of the things node names have re
566.
by hwillis 5y ago
The median age of riders is ~50 while the average age of fatalities is 42. People over 50 make up significantly less than half of fatalities. However, you are still kind of correct- the number of fatalities picks up strongly at 50+. Peopl
567.
by hwillis 6y ago
And in adult ferrets, generating totally a new (albeit undersized) tooth to replace a normal permanent tooth! That's a big deal since ferret teeth aren't particularly different from ours, while rodent teeth do all kinds of weird
568.
by hwillis 6y ago
> I wonder how this process would look like and how long the new teeth take to grow. It's a long, long way off- I can't understate how much you would not want to try this on yourself yet. It's far more likely you'l
569.
by hwillis 6y ago
Nope, that's the simplest use case but it can apparently be used to stimulate growth of completely new teeth. If you administer it locally it produces a specific tooth as well. First: the process, as far as I understand it. The hormo
570.
by hwillis 6y ago
No- care is basically the same, but the risks can be much larger. Your gums etc. are still at risk from bacterial buildup, and plaque etc live on your teeth more than they use it as a food source. Implants still develop plaque and calcu

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