D_Alex

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 one atom of carbon, which would indeed make it 80% hydrogen on a molar basis.

If that does not convince you: note also that atomic carbon is also a very unstable, and will auto polymerize into one of its allotropes (eg. C60 - buckyballs). And yet we count carbon by the atom.

"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...

>Chemical weapons are tactically useless for modern militaries

The defense of Azovstal steelworks and Gaza tunnels seems to show otherwise.

You are entirely correct.

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 Boston metro buses are in use for 6.6 hours per day, covering on average 53 miles.

A full size electric bus uses electricity at a rate of approx 2 kWhr/mile.

So, on average the bus would have around 17 hours to charge up with 106 kWhrs of juice, and this averages out to about 6.2 kW. On average.

However, the smart thing to do would be to charge the buses when the power costs the least, say between 10 pm and 8 am, so you'd need ~10 kW/bus, maybe ~1MW for the 100 bus fleet. Not difficult.

"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 hydrogen" is usually hydrogen produced from water by electrolysis, using electricity from non-CO2 source, e.g. wind or electricity.

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 nearby.

So, 80% is a theoretical maximum, which is never achieved in practice. 75% hydrogen looks pretty right.

>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 back-feeding into the grid when needed could have largely solved the intermittency problem.

>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 economic warfare waged against it by its former allies. Kind of hard to compete under such circumstances.

>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 Netherlands, Lombards in Italy, Walloons in Belgium etc etc.

>it weren’t for force and oppression.

Nah. That's USAID propaganda.

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 risk associated with purchasing Western airliners.

Finally, IIRC the airline's regrets were largely related to the poor early reliability of the French-built parts, specifically combustors, for the Superjet engines. It remains to be seen how the new Russian engines will perform.

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.

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.

It is part of UAC, along with Ilyushin and Yakovlev.

Wow. Researchers could have found this by reading Hacker News from 2019.

https://news.ycombinator.com/item?id=19579185#19579943

People who downvoted this should consider what happens in other countries. See eg:

https://www.google.com/search?sca_esv=41165fec71bc817d&sxsrf...

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

>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 during such heat - yet.

A 3-4 degree increase in average temperature means that 45-50 degree temperature periods may go from lasting 1-3 days to 2-3 weeks. And that's a whole new ball game.

>> 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:

"California is spectacularly behind schedule and overbudget on its quest to build the world’s slowest high-speed rail.

It seems like nobody knows how to build things anymore."

>Seems like the trick really is to deeply intertwine economies.

Did not work terribly well for the former Soviet republics :(

>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 bullshit

^^

>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.

Storage costs should be considered, particularly for an intermittent process. Otherwise, you need an end user that can accept intermittent and somewhat unpredictable supply.

>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.

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 include the executed drug traffickers in the count, the total is still 80 times lower.

For his smarts, but not for his wisdom.

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 reason for this is that the very rare outliers will accumulate truly enormous wealth, while the rest of the players will never lose more than they start off with. You can see this in the first graph after say 250 rounds - the richest player has around 10,000x his initial wealth, even as the other 1000(or so) have very little - so on average they have 10x what they started with. And the reason no one is rich after 1000 rounds is simply that there were not enough samples. If there were say a billion samples, you might expect one to come in with say a trillion times its starting wealth, overcompensating for the other 999,999,999 losers - on average.

>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.

Russia borders 14 countries, and I don't think it fought with any except over the issue of NATO membership.

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 watching).

"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.”