hwillis

69 ms·

691.
by hwillis 6y ago
ah, I thought you had misspelled.
692.
by hwillis 6y ago
> Volume wise, ugh. H- 8 MJ/L, Gasoline - 32 MJ/L In practice, hydrogen @10 kpsi/70 MPa is currently a bit over 1 MJ/L when including the tanks. Gasoline is misleading as well, because a fuel cell is easily twice as
693.
by hwillis 6y ago
edit: misinterpreted "desal" as diesel rather than desalinated water. Well that's just not at all true. Hydrogen by electrolysis costs <$20/kg. A much more interesting fact about a kg of hydrogen is also that it has
694.
by hwillis 6y ago
And you always have full (trip) range every morning with an EV. Yes, filling up in 5 minutes is better than 20. Never needing to fill up is even better.
695.
by hwillis 6y ago
they are obvious. The evidence against it is that there are not that many of them (or we would have detected more), and while we aren't sure how much they all weigh we're pretty sure it's orders of magnitude less than what w
696.
by hwillis 6y ago
^^^^^^^^
697.
by hwillis 6y ago
One is a personalized echo chamber, the other exposes you to the most provocative (by interaction) content. No shit your twitter feed is more aggressive... your personal facebook feed has nothing to do with how toxic facebook or twitter is
698.
by hwillis 6y ago
> Where are the soldiers? They don't even make the list, obviously. The majority of the military is non combat for every branch, and only a small minority is deployed at any particular time. This isn't WW2, soldiers rarely di
699.
by hwillis 6y ago
1. Thorium reactors are almost identical to uranium reactors and it is a recent but common misconception that they are so fundamentally different. The whole point of thorium is that it turns into uranium. The only real difference is that t
700.
by hwillis 6y ago
Why do you think I brought up all of the "killed by a stranger" and "familial" homicides if I was going to conclude by comparing the broadest numbers? "Killed by a criminal" is not ambiguous and very clearly d
701.
by hwillis 6y ago
If you don't care to read anything, maybe you're on the wrong website.
702.
by hwillis 6y ago
> There's nothing wrong with the idea of qualified immunity. A government worker should not be held responsible if they make an honest mistake. This implies that our legal system holds people responsible for honest mistakes. Our le
703.
by hwillis 6y ago
Before 1996 the last democratic president to be reelected was Teddy Roosevelt. Things have changed a lot since then, and congress is demonstrably far more polarized and unproductive.
704.
by hwillis 6y ago
For many reasons, transistor density is not a terribly useful metric: https://en.wikichip.org/wiki/mtr-mm%C2%B2 Not least because a transistors are not nice neat npn regions. They have multiple gates, all different ga
705.
by hwillis 6y ago
The point is that "black on black violence" is essentially a myth. If crime was responsible for the elevated rate of homicide among black people you would expect a higher proportion of strangers killing each other. All those int
706.
by hwillis 6y ago
14 nm in actual distance is only ~50 silicon atoms (~1.4 angstroms) wide. 14 nm process finFETs have a fin width of ~8 nm and in general 14 nm process transistors have a gate length of ~20 nm. > Such as what’s the resistance of a wire 1
707.
by hwillis 6y ago
ASICs?
708.
by hwillis 6y ago
> But vice versa, using the process and knowledge we gain from 5 nm chips might improve the lifetime of 7 nm chips by orders of magnitude Probably not. The problems at each scale are very different and tend not to have much overlap. Pr
709.
by hwillis 6y ago
The USB issues were related to a critical flaw in the LPC clock, according to the Intel errata. USB expected lifetime traffic for the affected processors was 50 TB while active at most 10% of the time. The errata implies lower voltage sys
710.
by hwillis 6y ago
^^^ This affects servers, personal computers, and phones. That's pretty much it. <10 nm is only used for the applications most demanding of computer performance. You know what the limiting factor on your phone and laptop's li
711.
by hwillis 6y ago
Possible but unlikely IMO. For one thing it would be trivial to detect. To be a suitable attack surface it would need to wear out ~>100x faster than the most robust pathways (months instead of years). I am spectacle that manufacturing
712.
by hwillis 6y ago
One-third of all Americans killed by strangers are killed by police. If you are black, you're more likely to be killed by a police officer than someone whos name you don't know. https://granta.com/violence-in-blue
713.
by hwillis 6y ago
All great, but the problem with police is the same reason we don't use the military as our law enforcement agency. If all you have is a hammer, everything becomes a nail. -Traffic cops, patrolmen, and escort/guard details do not
714.
by hwillis 6y ago
Definitely check out the hackaday prize finalists; everything in the top ten every year is usually spectacular. Example: https://hackaday.io/project/5030-low-field-mri
715.
by hwillis 6y ago
Fun fact: magnetic resonance (a la hospital MRI machines) is also a common method of underground imaging. MRI is quite neat in that the time-space resolution tradeoff is extremely flexible, and you can get quite good pictures if you leave
716.
by hwillis 6y ago
Muons scanning works for seeing through things, not into them. There are no muons coming from underground because the Earth blocks them. Scanning the pyramids (fun fact: you can DIY a muon detector for <$100) relies on the fact that
717.
by hwillis 6y ago
For me, I could not tell the difference between coffee and water. Energy drinks did not taste at all sweet; they felt slightly syrupy/viscous and I could feel the bubbles on my tongue. I could sense saltiness to some degree, but not
718.
by hwillis 6y ago
it's definitely not stuffy nose, I had the same utterly dry nose. In fact I felt more aware of the inside of my sinuses than I ever have before... they felt completely empty . It was almost nice except that it was really freaky and
719.
by hwillis 6y ago
No, that doesn't track. Smell impairment (not even loss) only comes with very severe zinc deficiency- which is not happening over a single day . I lost my sense of smell over roughly 8 hours. There are also tons of other symptoms o
720.
by hwillis 6y ago
No, I'm talking about what is required to get to the same as current VR. Beamwidth and pixels per degree are NOT equivalent. Beamwidth causes adjacent pixels to blur into each other, which is a much bigger issue when projecting ont

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