audunw

67 ms·

781.
by audunw 4y ago
You seem to be under the common misconception that it's the energy density of batteries that make them unsafe. This is completely false. There's nothing inherent about battery energy density that makes them more dangerous. What ma
782.
by audunw 4y ago
I didn't watch the whole thing, but did she mention electric bikes? IMO, Electric cars, or cars in general, are just fine. We just did a family road-trip around Denmark with our Ioniq 5 and it's absolutely perfect for that. The th
783.
by audunw 4y ago
> And what does “Everything is in one chip” even mean? I guess he's mainly thinking of GPU, which isn't unique. But there's not that many SoCs with that amount of power in one SoC. So it's close to competing with al
784.
by audunw 4y ago
When they changed from planar transistors to more 3D-like transistors like FinFET, I believe. I'm pretty sure 55nm and probably 28nm still has minimum pitch of that size. Problem was that people had certain expectation that a "45n
785.
by audunw 4y ago
Transistors are more "3D" now, that's why a 10nm process gives you something like the same density as what a 2D planar transistor with 10nm minimum gate length would. See "FinFET" or "GAA" transistors If y
786.
by audunw 4y ago
Why do you care what the minimum gate length is of a process? Do you design standard cell libraries? Transistor density is the only thing you actually care about, and they've continued decreasing the numbers to roughly match what you&#
787.
by audunw 4y ago
One of the ways to avoid imaginary numbers is to use matrices instead. You wouldn't exactly solve sqrt(-1). You'd solve the sqrt of the negative of the 2x2 identity matrix (-I) You can't solve sqrt(-1) without a second dimens
788.
by audunw 4y ago
> - Thousands of tickets that would probably take 30+ software devs 100+ years to implement I feel like the company I'm working for has a reasonable attitude towards Jira, and they recently just batch closed all tickets that were ol
789.
by audunw 4y ago
> 3. In the government case, minimizining flailing and tyranny equates to minimizing the size of government. Whoa there. There are plenty of very small governments that have plenty of flailing and tyranny. In the limit, if government is
790.
by audunw 4y ago
> but that cleanness is artificial and gets in the way when trying to parse and use the software. I really don't agree. When software/UIs were simpler, the buttons screaming loudly "I AM A BUTTON!" worked. Now it quic
791.
by audunw 4y ago
> What Lilium needs is an Einstein-level breakthrough in chemistry. Do you have details for this claim? Is their needs anything more than what their supplier Zenlabs claims to have developed? If so, it doesn't seem to me that they r
792.
by audunw 4y ago
> but it's ridiculous to imply that the ducted fan is somehow "more efficient" without talking about the propellers' respective diameters. Why? Their point is that it's misleading to use data from open propeller
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by audunw 4y ago
> Even if they could pack this much energy on board, flying that much weight 200km is almost certainly going to take more than 300kWh, especially with 7 passengers. The Pipistrel Alpha Electro can fly 2 people more than 100km today , wi
794.
by audunw 4y ago
Yeah, but you'd accomplish nothing. Because the only way a registry could be meaningful in determining ownership, is if the government that protects your property rights considers the registration valid. And in that case, you have to t
795.
by audunw 4y ago
If you want Europe to be as attractive as headquarter location of mega-companies as USA is, you may have to compete with USA on a lot of policies (taxes, labor laws, etc) that would turn Europe into a different kind of society. Do we really
796.
by audunw 4y ago
> meaning the US has full veto rights over to whom ASML gets to sell their EUV machines (spoiler alert, not to China). That's false. For USA to be able to block exports of the technology, more than 25% (if I remember correctly) of
797.
by audunw 4y ago
Umm, the German company Zeiss is the only company in the world capable of making the mirrors for the EUV machines used in this factory. They're still have world leaders in power semiconductors with Bosch and Infineon. This isn't t
798.
by audunw 4y ago
Which raw material specifically? Norway is the fifth largest exporter of Quartz. Turkey is third. I think there's enough Quartz in Europe for silicon. For silicon wafer manufacturing there's Okmetic Oy in Finland and Siltronic AG
799.
by audunw 4y ago
In addition to what you say here, if we're going to actually solve the CO2-emissions problem, we're going to have a HUGE amount of variable load to match with variable production. We're going to need a massive amount of green
800.
by audunw 4y ago
> The failure of the Germany energiewende is a great example Except it's not as big of a failure as many try to claim. It's meeting huge challenges, for sure. But part of the problem has little to do with inherent flaws of rene
801.
by audunw 4y ago
> Storage + Intermittent is not enough to power a modern grid. As a previous comment pointed out, one solution is to just over-construct renewables. You can look through a graph of output of wind+solar for a large area and find the minim
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by audunw 4y ago
Why is it hard to put out a fire when EV batteries are involved? If the fire doesn't start in the EV battery why would the battery catch fire? It might sound like an odd question, but we have experience with this in Norway, and the res
803.
by audunw 4y ago
> Are you sure this is not just the amount of exposure to each type of clock? I have a large analog clock in our living room that I look at every other day or so. I still find that I instantly understood the digital watch, but with the
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by audunw 4y ago
First commercially viable lithium solid state battery? There are Mercedes buses with solid state batteries right on the road right now: https://www.youtube.com/watch?v=Om3uVW4lskE&t=11s Okay, the battery needs to be he
805.
by audunw 4y ago
Oh, it only requires ALL the energy from by far the largest and most environmentally destructive hydroelectric dam on the planet? One that accounts for 10% of China's energy use? Oh, that's nothing at all then! /s How do guys
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by audunw 4y ago
> we didn't need to use trade barriers to gain competitiveness No but Britain sure needed to be allowed to use British Overseas Territories like Cayman Island to facilitate systematic tax evasion.
807.
by audunw 4y ago
That's interesting. I've had the opposite thought: that spacetime is created by particle interactions, and so mass is essentially "shedding" spacetime. You'd think this would push other particles away, but the proce
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by audunw 5y ago
I think the problem with Rust and most other languages, is illustrated by what Zig (for me) does right: My main motivation for using Zig is that it's rapidly becoming a better C toolchain that GCC or Clang. So I'm extremely motiva
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by audunw 5y ago
I'm guessing the video on drone delivery was this video by Wendover Productions? https://www.youtube.com/watch?v=J-M98KLgaUU
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by audunw 5y ago
Yeah, as always, they forget to mention volumetric energy density. Big red flag. There's some concepts that may work around that, like a blended-wing design. Airbus seems to think it's viable. https://www.airbus.com&#x2

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