D_Alex

6 ms·

31.
by D_Alex 2y ago
Ooh, I love pedantry contests! Let's go back to your opening comment which was something like "I thought methane was 80% hydrogen on a molar basis". Methane does not contain H2 molecules, it contains 4 atoms of hydrogen. Plus
32.
by D_Alex 2y ago
"Molar" refers to a number of elementary entities, which could be atoms or molecules or w/e. So yes, if you are counting moles of H2 gas, but not if you are counting atoms...
33.
by D_Alex 2y ago
>Chemical weapons are tactically useless for modern militaries The defense of Azovstal steelworks and Gaza tunnels seems to show otherwise.
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by D_Alex 2y ago
You are entirely correct.
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by D_Alex 2y ago
No, that is not right. The correct answer is "it depends", but let's run some indicative numbers on data for Boston: On average and excluding the minority of routes with dedicated lanes (which may be best run on diesel), the
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by D_Alex 2y ago
"Blue hydrogen" is commonly used for hydrogen produced from natural gas. If it is produced by steam reforming (most common), then the associated CO2 emissions are worse than if you just burn the natural gas directly. "Green
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by D_Alex 2y ago
Natural gas is a mixture of methane and heavier hydrocarbons, the composition varies by region, depending largely on how the LPGs (propane and butane) are used. Ethane usually ends up in natural gas, unless there is a petrochemical complex
38.
by D_Alex 2y ago
>Now electric car transition there is done, too And right after that, the fight against climate change will be lost. Electric cars could have been the enabling technology for intermittent renewable power generation. Smart charging and ba
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by D_Alex 2y ago
>Those who in America, had Learjets and beachside villas, had to make do with bugged apartments and black Volgas in the Soviet Union and they rightly saw it as unfair. The Soviet Union endured a most destructive war, and then had economi
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by D_Alex 2y ago
>nations with their own language and culture There are few countries where there is a single language and culture. Just looking at Western Europe, there is Basques in Spain, Bretons in France, Welsh/Scottish in the UK, Frisians in N
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by D_Alex 2y ago
I disagree with you about the effect of sanctions. Their result was that airliners became a strategic priority rather than something Russia was happy to buy overseas forever. Furthermore, the sanctions demonstrated that there is sovereign r
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by D_Alex 2y ago
Yep... it is hard to build a competitive jet engine. If the Russians manage to do this, it would be another example of the stupidity of the sanctions. I bet COMAC is cheering them on too.
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by D_Alex 2y ago
Yes, and they are ahead of COMAC in the number of aircraft produced. It will be interesting to see if UAC emerges as a serious competitor to Boeing and Airbus (and COMAC) in the near future.
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by D_Alex 2y ago
It is part of UAC, along with Ilyushin and Yakovlev.
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by D_Alex 2y ago
Wow. Researchers could have found this by reading Hacker News from 2019. https://news.ycombinator.com/item?id=19579185#19579943
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by D_Alex 2y ago
People who downvoted this should consider what happens in other countries. See eg: https://www.google.com/search?sca_esv=41165fec71bc817d&sxsrf...
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by D_Alex 3y ago
Actually... 737 MAX is roughly 30 times as dangerous as the other planes in its category (eg. A320). Source: https://www.airsafe.com/events/models/rate_mod.htm
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by D_Alex 3y ago
>temperatures regularly get up to 45-50 degrees celsius in the summer and people get by okay Largely because the 45-50 degree temperature do not last very long. And partly because AC loss due to prolonged blackouts has not happened durin
49.
by D_Alex 3y ago
>> It seems like nobody knows how to build things anymore. >The Chinese, Japanese, Koreans, Germans, etc might disagree. It's funny, after riding the Chinese HSR network, this quote from the article had me shaking my head: &qu
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by D_Alex 3y ago
>Seems like the trick really is to deeply intertwine economies. Did not work terribly well for the former Soviet republics :(
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by D_Alex 3y ago
>pv uses orders of magnitude more land per megawatt (not per megawatt hour; please get your units straight) "Per MWhr" is a better measure when comparing intermittent-power generation such as wind and solar. >posting random
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by D_Alex 3y ago
>This looks much better than it actually is for a couple of reasons... It looks absolutely brilliant just for its single color print speed, which is like three times faster than a much more expensive Prusa. Everything else is a bonus.
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by D_Alex 3y ago
Storage costs should be considered, particularly for an intermittent process. Otherwise, you need an end user that can accept intermittent and somewhat unpredictable supply.
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by D_Alex 3y ago
>So you believe we should kill all the brewers, bartenders, liquor store clerks etc? Yes of course. Why do you even ask, I thought this much was totally clear from my original post.
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by D_Alex 3y ago
Or you could take the Singapore approach and execute all drug traffickers. Whether this is moral is arguable, but it certainly has been effective - drug deaths per capita in Singapore are about 100 times lower than in the US. And if you inc
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by D_Alex 3y ago
For his smarts, but not for his wisdom.
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by D_Alex 3y ago
I disagree, and furthermore I think the entire article is basically wrong - in a way. Specifically, the expected average wealth of both the collective and an individual will increase every round. However the median wealth will fall. The
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by D_Alex 3y ago
>Russia has always been an imperialistic, genocidal and brutal country, incapable of creating anything of lasting value. Wow dude, that is quite deranged. >Unless Estonia was in NATO, Russian armors might very well be now in Tallinn.
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by D_Alex 3y ago
Recently Chomsky talked about Ellsberg in response to a question "Who has been the single greatest public figure of your lifetime?" https://youtu.be/TQ-Crh3rdQA?t=1946 (BTW - the whole interview is well worth watc
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by D_Alex 3y ago
"America has no permanent friends or enemies, only interests" - Henry Kissinger. And also... “To be an enemy of America can be dangerous, but to be a friend is fatal.”

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