1,136 karma · joined April 2, 2020
This is also noticable elsewhere. When looking at german planning, they reference other german projects and rarely projects of the sourrounding countries, and thus often don't notice the lessons learned there.
One of the issues with the German tilting trains is that they try to compensate up to 8° without track knowledge (BR 612) thus the first carriage (the one after that less so) swinging abruptly to compensate when entering or exiting a curve. Not sure how the class 390s solve that problem.
That is the intention, but many people report discomfort due to the non-ideal adjustments, at least for the tilting trains in germany.
Please tell me where it's possible to live in modern society right now without any use of polluting energy. Seems to me like https://knowyourmeme.com/memes/we-should-improve-society-som...
> immediately offsetting a product/service's carbon footprint.
What offsetting do you find acceptable? Most carbon offsets sold are complete bunk, thus costing very little. Stuff we can be sure about (like DAC) are well over 500€/ton right now, implemented now this would be sure to lead to riots, especially since it'll probably affect people with less income the most (relative to their income). A carbon price is a great mechanism, but one this high is (IMHO) unworkable and there needs to be accompanying measures to ensure that the carbon price isn't so low as to be ineffective, not strain citizens to much and not make local industry non-competitive.
If we only implemented it for non-strictly-necessary stuff (like meat, flights, big cars, cars outside rural areas, living and heating a larger dwelling over 18°, ), it would still be very unpopular (and probably lead to riots)
Important things you can influence for a low carbon footprint are:
- How do you heat and how much? Gas heating is surprisingly bad in the US due to the high amount of methane leakage
- Do you drive a lot in a combustion car, or even worse, fly?
- What kind of food do you eat? As a rough guideline, dairy and meat is pretty bad and beef much worse. Also the stuff that has to be brought in by plane.
Living in nature often makes it harder to have a low carbon lifestyle and the things often associated with "good for nature" like reducing plastic waste and organic products are often worse carbon wise.
As wind turbines aren't a very rare sight, I think it's reasonable to assume that most have already seen a wind farm in person. Newer generations in Germany also only flash when planes are nearby.
> Nobody ever bothers to talk about what will be done with these football field sized blades (I’m guessing at least 100k of them by now?) when they’re decommissioned?
At least I've seen a lot of talk about it, most of it ending in "we're trying to reuse them for something else with mixed success" or "recycling is possible, but not yet done on a large scale, but we hope it'll increase".
> do you think any of the companies who signed these 30 year leases will be around to de-com the turbines when they start falling apart? (Answer is no)
At least in Germany, where wind turbines from 20+ years ago are being replaced by newer ones (due to the much higher power output), this hasn't been an issue yet. In contrast to oil and gas sites, after the wind turbine has seen it's EOL the land isn't worthless for the purpose, but a new wind turbine can be installed. Thus for most sites this isn't much of an issue. This isn't to say that regulation is a bad idea (and I'm wondering why leases were signed without a clause to obligate the operates to remove them), but I don't see the fundamental point of conflict, since the land isn't worthless afterwards for energy purposes.
> Then there’s the never ending problem of freezing…
At least your first two sources suggest that electric heating works (but unfortunately not if it's doable from the energy generated by the wind turbine itself, but I assume that to be the case, otherwise it doesn't make any sense), and the third suggests a fault of the power connection of the initial fault (and quite a bit of tabloid rambling that I didn't read, I have to admit).
China, which the country building the most nuclear right now, is falling behind its own plans and downscaling its nuclear ambitions in favour of renewables.
While running only a small percentage of the time. Some only operate a few hundred hours a year, let's say 300 hours (around 3.4% of the time). These low operating hours are much more likely to happen as short term storage and renwables get expanded. French nuclear reactors run around 60% of the time and have very little variable costs. Thus new nuclear reactors would have to be only 5% of the cost of gas peakers when run most of the time, as would be economically reasonable, to beat gas peakers.
For electricity (which is the only energy category where nuclear makes sense) I see no reason to be this pessimistic (of course, depending on your definition of near 100%, but let's say 95%). Solar and Wind have strong growth prospects and are very economical, with reason to believe in further price reductions (especially for solar). As we've seen at COP, a lot of countries are planning to strongly build out renewables (a simple tripling, disregarding a lot of factors, leading to 45% share of renewables by 2030) and only a few are planning a much slower expansion of nuclear.
Storage shows a lot of promise and very successful initial deployments for short duration storage and I see no reason to be more (or even as) optimistic about future development of nuclear & fusion reactors than chemical energy storage.
> It's almost as if all the people working on these projects and funding them aren't complete morons, and the world quite so reductive, like half of hacker news seems to smugly dismiss EVERY time any fusion article is posted.
Or there's a reason why this is mostly funded by governments as a foundational work, presumably with hopes that fusion will be largely viable in the long term. If governments funding this work were hopeful that fusion would be economically viable within 15 years, you'd expect very large funding increases (especially from the private sector) and a reduction in investment for transforming the electricity grid away from big central power producers to more geographically diverse renewable supply.
Meanwhile the switch had the big bootrom usb stack exploit, but everything apart from the original SoC doesn't have a publicly known easy exploit (there are mod chips, but nothing like the 3DS/PS3/Wii U/Vita/PSP/...). There also wasn't that as much "cool" stuff to do as on older consoles with homebrew due to the hardware simply being an android tablet with controllers (which doesn't make a difference as a console, but makes it more boring homebrew wise). So there is the usual stuff (savegames, different controllers, piracy, themes, overclocking), but nothing unique to the switch.
A whole lot more people die from car accidents, yet there are few reports on national news on accidents. So fewer people care. Meanwhile each time there is an aviation disaster, 100s of people die and it's all over the news for weeks. Similarly with train accidents and nuclear accidents. There where only 2 very large ones but they still haunt the field to this day, while (for example) the deaths from solar installations by people falling from roofs are mostly ignored.
Large accidents have to be avoided, a lot of small ones are more acceptable.
The clearest example of the difference of reliability is looking at public digital signage (on transit and elsewhere). If it's based on LED segments or something similarly basic (with old-school embedded software development) it will basically always work. New LCD Screens inside trains/busses and outside working with a modern software setup (using an OS, often with a pc architecture, quite often just displaying a website) are broken ~10%-20% of the time. Looking at (for example) busses, a large portion of the time the screen will either be blank, not display anything, old information or just wrong information. Going inside fast food restaurants with large LCDs for the menu, often something is broken, frozen or something else.
It is of course possible to make modern software more reliable. It's just much, much harder than making embedded software or PLC programming reliable. Software can be easily made more complex, but it's hard to make it non-complex or to wrap the complexity so it isn't an issue anymore. The ecosystem isn't set up for non-complexity.
It is way harder for different computerized systems to work together due to the higher complexity and more obfuscation (a traditional logic circuitboard is often easily reverse engineered. Reverse engineering software is a very specialized task). This is also very noticeable in other sectors, where interoperability has become much worse due to moving to proprietary digital protocols.
This is in part due to the difficulty in getting software approved as compared to previous tech (due to software being so intransparent) but also because of truly lacking quality. One of the reasons Bombardier was so deep in trouble was bad software, even leading to a contract of over 40 ordered trains just being cancelled ([2]).
In my opinion building reliable (and understandable) software is way harder than building logic or even mechanical systems. I don't know what the solution is, but it's been a problem for a long time.
[0]: https://www.vrt.be/vrtnws/de/2013/02/12/belgische_bahn_storn... [1]: https://www.augsburger-allgemeine.de/augsburg/Neue-Zuege-auf... [2]: https://de.wikipedia.org/wiki/Bombardier_Talent_3#%C3%96BB
Even more staggering is that from 2020 to 2021 solar+wind grew by ~15%.
Outside of already very dense cities which heavily discourage using a car (think large asian cities, not montreal), you won't see newly built underground lines built privately. People aren't as captive today and even in the 1900s londons subways weren't very sound financially as companies.
[1]: Transit systems benefit strongly from integration between lines and modes, as well as making interchanges as painless as possible. This is mostly antithetical to multiple companies building lines inside a single city, which often ends up with little fare-integration and annoying interchanges. This can also happen with government built lines, but is less likely.
Pretty much no MCU in the same price range contains a DAC and most comparable MCUs don't have integrated OpAmps. The external flash has it's disadvantages, but it's also much cheaper to have huge amounts of flash. Typical 1$ MCUs can't include external flash in their address range, so it also can't be added in a similar way.
The RP2040 isn't suitable for a lot of floating point tasks, but floating point tasks on MCUs are not that common. FPGAs are often used as DSP-monsters and floating point isn't very nice on them.
If you need fast processing, with real multitasking, flexible (digital) pheriperals (PIOs can also simulate timers and up to ~22 total timers are nothing to scoff at), some nice fixed point DSP stuff (hardware divider, interpolators), gobs of (external) flash & RAM and great software support the rp2040 is pretty much the way to go as a default micro-controller.
For ~1$ it's a pretty compelling offer which is hard to beat with non-chinese chips.
There is also no specified way to convert USB 3 to USB 2, but some have tried, with mixed results.
For those with high-resolution screens and 144fps the equipment is not affordable to most but not necessary.
But an already existing phone is cheaper for sure
Apple tried to counteract it with Apple Arcade, but that hasn't worked out.