phenol

7 ms·

1.
by phenol 1mo ago
thank you for actually reading the article and realizing that the team of energy scientists + engineers doing this have thought more carefully about the viability of the process than a HN commenter that learned about it this morning
2.
by phenol 1mo ago
kind of. the real figure of merit here is the levelized cost of hydrogen (LCOH), which requires you to build a technoeconomic model to simulate the total cost and production of a hypothetical unit over its lifetime. focusing just on "e
3.
by phenol 1mo ago
sure, and I'm saying that it's not a well-defined number because it's not a closed thermodynamic process. it's kinetically limited, so your H2 yield is a function of how much time you're willing to wait. it also obv
4.
by phenol 1mo ago
critically, the electricity here is not actually directly breaking apart the water into hydrogen, so you can't directly calculate an energy efficiency like you can for electrolysis. this company is using electrohydraulic fracturing to
5.
by phenol 5mo ago
products of an asymmetric reaction performed without enantiomeric control can selectively catalyse the formation of more products with the same handedness -- this is called autocatalysis. so the first full reaction might produce a left-hand
6.
Show HN: A game where you identify countries based on their electric grid mix(jmelville.science)
1 points by phenol 2y ago|1 comments
7.
by phenol 2y ago
this is an absolutely valid Bayesian approach to this problem. sadly, this point is not even touched upon in this article, which deals solely with minutiae of the probability distributions (kurtosis, etc) of coins that are indeed fair.
8.
by phenol 3y ago
to make a fair comparison here, you need to normalize per mole of metal. these enthalpies of formation are reported per mole of oxide, but there's twice as much Al per mole of Al2O3 than Ti in TiO2.
9.
by phenol 12y ago
I don't think people are upset because they "got big", but because they were acquired by a corporation that signals a core shift in their ideals. If they were bought by Valve, or even Microsoft, I don't think there&#x27
10.
by phenol 13y ago
I seriously doubt the correlation between "liking porn" and "refusal to purchase a device that does not have official porn apps, especially considering I could stream porn from my phone or computer to my Chromecast just fine.
11.
by phenol 13y ago
New events? New sectors? New systems and subsystems? New content from Chris Avellone?
12.
by phenol 13y ago
Just playing devil's advocate here, but are you sure that the same sort of start-up culture pervaded the industry when these single-letter-NYSE companies formed (some over a century ago)? Don't you think that the presence of mass
13.
by phenol 13y ago
I have never seen this notation used, but perhaps it is mean to represent steradians (the unit of solid angle)?
14.
by phenol 13y ago
You totally can get good at it, it's a skill like any other. I've won like 40 games out of 200 or so, and I'd say that I win about half of my games I decide to play past the first sector. You just have to have a good feel fo
15.
by phenol 13y ago
IIRC, the whole "99 cent pricing" paradigm originated not as a method to subtly reduce the apparent price of products, but as a way to force cashiers to give change for all purchases, and thus open the register so that all transac
16.
by phenol 13y ago
Screencaps: http://puu.sh/2zwIE http://puu.sh/2zwJJ
17.
by phenol 13y ago
Maybe not viewing, but the article also talks quite a bit about filming, in which Glass has a concrete advantage.
18.
by phenol 13y ago
Some bitcoin wallet clients, like Electrum, can recover your wallet from a seed that you can write down or email to yourself. Electrum: http://electrum.org/
19.
by phenol 13y ago
What did they teach?