audunw

33 ms·

361.
by audunw 2y ago
Yeah, this is why I’m not too worried about the energy storage side of going 100% renewable energy in a scenario where we also decarbonise completely. Storing energy as heat is dead simple, cheap, can let you store huge amounts of energy, a
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by audunw 2y ago
Logistics is under appreciated. And the logistics lessons from fighting real wars are mostly applicable in other wars even if they’re of a different nature. I don’t think China has a chance until they’ve at least had a practice run with a r
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by audunw 2y ago
Would have loved some more details. Many petrol cars are now hybrid and are just as quiet as EVs. Many EVs make sound when driving at slow speeds. Does that mitigate the problem? It’s actually really irresponsible that this topic isn’t brou
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by audunw 2y ago
Only if Taiwans government surrenders without a fight. Which seems unlikely. This isn’t a problem worth worrying about. Hell, given how easily it’d be to detect preparations for an invasion with any chance of success I don’t think worrying
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by audunw 2y ago
> When then battery age out in 10 years, you swap the vehicle. For this use-case it'd probably be best to go with LFP so you get more lifetime out of the battery. Though even with Li-ion, I think a modern EV with a big battery will
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by audunw 2y ago
Our power company ("Tibber") provides this as a service in their app for a bunch of different car models. Until recently this just let you avoid hours with more expensive electricity. But now you get an extra bonus on top of that
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by audunw 2y ago
But massive battery farms are becoming cheap as well. And people vastly overestimate how much energy storage is needed to balance renewables.. especially if the country in question starts to decarbonise transportation and industry. The solu
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by audunw 2y ago
They kill the prey of large predatory birds. If we stop hunting them down ourselves and they have enough food, wind turbines are no threat to their population. There are areas where wind turbines have been put up near population of eagles (
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by audunw 2y ago
In a world where we move towards 100% decarbonisation, energy storage isn’t going to be a significant factor. If you replace fossil fuel with electricity for industrial heat, which represents a huge amount of energy we use, you can use ther
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by audunw 2y ago
It’s not incredibly long way at all considering that there’s already electric mining truck in operations. Several varieties in fact (overhead wire and battery-electric). But they’re a very long way from approaching 100% of mining if that’s
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by audunw 2y ago
Norway had a little downward bump in sales around the 10-20% market share mark too if I remember correctly. But after going through that speed bump the sales have shot up to 90%+ I wonder if it’s kind of necessary to sit on that ~10% level
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by audunw 2y ago
The whole “if you criticise the Chinese government you must be racist against the Chinese” thing is getting really old. You don’t see the same national security risk concerns when it comes to Taiwan which is mostly inhabited by exactly the
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by audunw 2y ago
Nothing in this world is black and white. Nothing is 100% renewable. Renewables are a classification that generally only implies that there’s no material that is spent/burned/fully degraded during normal daily operation. And of co
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by audunw 2y ago
They’re not bad lenses. They’re lenses with the right amount of low pass filtering, essentially. If you design a DAC, and you have artefacts in the higher frequencies you will almost always filter them out with a low pass filter. Why shoul
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by audunw 2y ago
Not to mention putting the RAM directly on a System-in-Package chip like Apple does now. That's going to be unbeatable in terms of space and possibly have an edge when it comes to power consumption too. I wouldn't be surprised if
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by audunw 2y ago
I suspect the maximum stored energy for the compressed air solution is significantly higher. Not only can you store the energy required to lift the water to the surface, but after all the water is lifted you can keep compressing the air in
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by audunw 2y ago
Depends on the charger.. It may have integrated ground fault protection And the "smart" word covers over a lot of potential features, like stopping/starting charging based on electricity prices, doing load balancing between m
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by audunw 2y ago
Oslo airport has water fountains. Thought to be fair I don’t think I’ve many in Oslo city. I generally just ask a cafe to fill my water bottle if I need to. I’ve never had anyone refuse
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by audunw 2y ago
https://web.archive.org/web/20240428171854/https://www.washi...
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by audunw 3y ago
Maybe he didn’t forget but left this thought out for brevity: foveated rendering and other tricks is certainly possible. But that requires a lot more software development. Apple is launching an MVP. Probably primarily to get developers to s
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by audunw 3y ago
The lack of features/services you describe are all software: which explains exactly why they’re so expensive. The displays they’re using is in limited supply. And they primarily want to get the headsets into the hand of developers to m
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by audunw 3y ago
OpenAI isn’t really a competitor to Siri. It’s a competitor to Google Search. And Apple has never been in the search market. OpenAI doesn’t work without internet. Siri does. OpenAI can’t do anything on your phone. Siri can. They’re fundamen
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by audunw 3y ago
Btw, if you’re talking about models being launched in 2032 or later, then those will almost certainly be very niche models that will have very limited sales. I made a projection of EV sales in Norway back in 2017, assuming that the growth w
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by audunw 3y ago
Why do you say that? You can get a new battery for the 2011 Nissan Leaf. You can even upgrade to a bigger battery than the original had without an increase in weight. It’s expensive, perhaps not worth it to most. But it’s a very, very nic
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by audunw 3y ago
Our 8 year old 2015 Kia Soul EV is about 15% degraded (on the worst cell, which could be replaced individually btw). Battery degradation is generally fairly linear between 100% to 70% SoH. So I don’t see why I shouldn’t expect another 8 yea
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by audunw 3y ago
EV sales now account for just over 90% of new cars in Norway. This in a country with a winter that’s brutal on range and where people love to drive 2-6 hours to get to their cabin on top of a mountain. I also regularly see people write abou
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by audunw 3y ago
The metric means what it has always meant: lower numbers mean higher transistor density on some area (the digital part) of the chip. What more do you want? It’s as meaningful as a single number ever could be. If you’re a consumer - if you d
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by audunw 3y ago
You have it the wrong way around. The nm number used to mean minimum gate length. But when moving to FinFET and other transistor innovations that provided increased density, they decreases the “nm” number AS IF the increased transistor dens
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by audunw 3y ago
I don’t get the idea that Apple dropped the ball on AI. They were fairly early with adding neural engine hardware to their chips and have been using ML extensively on-device for a long time now They haven’t put an LLM assistant out there. B
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by audunw 3y ago
Then you also need to factor in the recycling opportunity for the production. An EV may have fairly high CO2 emissions during production, but much of that is associated with mining of metals/minerals. Those are generally recyclable. La

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