Are there any perovskite/monocrystalline cells in commercial production yet anywhere in the world? I keep seeing a lot of buzz for adding a perovskite layer to crystalline silicon cells, but I’m not seeing any in actual production. Maybe I’ve missed something?
That’s rough. But now that it’s all gone, consider moving to disappearing messages. It’s kind of freeing when you don’t have to worry about the burden of immutability.
What about the past 250,000 years of lost music?
This only works if the bridge is financed as an NFT
Not enough context, impossible to answer this question.
The LED should be expected to outlast the rest of the phone by a large margin. That said, given enough units out there, it’s statistically inevitable to get a couple with some issue that die earlier.
To be fair, it has already been years
You’re learning all the right lessons! 👍
Yeah it’s pretty neat. You can also imagine a version that goes 3D, maybe replicating uneven ground or stairs.
That’s pretty cool. No AI needed!
Cool video
I would love that. I personally love riding high speed rail. The problem is that it’s too damn expensive to build in the USA. The cost : benefit ratio just doesn’t pencil out.
Even the profitable Acela line barely qualifies as high speed rail because they can’t handle upgrading all the rail and dealing with legacy infrastructure issues.
It would be amazing if they could fix that and extend it down the coast to Miami. It would be amazing if they could build a high speed rail line from NY to SF. I would totally ride that. Unfortunately I just don’t think it’s ever going to happen.
Yes that makes an transcontinental high speed rail very impractical.
It’s fun to think about this stuff, but like the YouTube comments discuss, this is not going to be a practical solution. The cost:benefit ratio just isn’t there.
My personal opinion is that continued electrification of existing transport modalities is probably going to be the defining feature of future transportation developments for the next century. The biggest issue is battery energy density, but I’d be shocked if things like solid state batteries didn’t start coming online within the next decade or two. There’s just so much investment going on here right now.
So obviously things like electric cars and buses on existing roadways is going to continue growing. Full self driving will eventually occur. Convoys of high speed electric vehicles traveling down highways will basically do everything that high speed rail is supposed to do, but without the need to build high speed rail. Like by the time a transcontinental high speed rail system would be built (50 years?) It would be obsolete.
That’s not even taking into account how the enormous investment and innovation fueled by the electric car/truck/bus industry is also going to enable electric airplanes. Being able to fly a couple dozen people to local air strips a couple hundred miles apart will be a true transportation revolution. You’ll be able to connect up all these regional locations without any significant infrastructure and at aircraft speeds and for relatively low cost.
High speed rail is amazing for high density locations like Europe, Japan and China. But for the USA it’s a much tougher sell. And with upcoming developments in electric vehicles it’s likely to be obsolete by the time you finish building it. It’s sort of like trying to convince a big African country with poor telecom infrastructure to build out a national network of expensive high speed fiber optic cables instead of going for something like wireless cell towers or just switching to satellite constellations like Starlink in another decade.
The silky pyramid bags are the worst. Paper bags should be ok, unfortunately a lot of bags that appear to be paper might not be, or might be mostly paper with some plastic threads holding it all together. Almost impossible to tell just by looking at it.
Meanwhile modern teabags leach microplastics into your tea when used.
But those envelopes are tasty…
Those are normal crystalline panels, not tandem