Sorry, should have clarified - I was speaking on the part of many academics. In my department, most people (faculty) have abandoned Twitter and a fair few have started on bluesky although more just don't use the format in any context anymore. I only know of one who uses Mastadoon.
sm1dger
joined 2 years ago
But we did leave and if (or when) it becomes enshitified, we will move again. We don't need an idealised platform, we just want something easy to use which doesn't (yet) have the baggage and culture of twiXer
Currently, garbage. They used it to reinforce a polymer to go from a strength of 50 MPa to 70 MPa. Kevlar is 10x stronger, commercially scaled, and cheap
You can't say that. It should be "one fewer CEO"
It's literally in the paper! "The nomenclature varies with the diameter of the fibers (and region), including ∼2 mm spaghetti (small string), ∼1.75 mm vermicellini (little worms), and ∼900 μm capellini (little hairs). The narrowest diameter mass-produced pasta is ∼800 μm capelli d'angello (angel hair), although thinner pasta lunga is produced by hand exclusively in the town of Nuoro, Sardinia: su filindeu (threads of God), which is estimated to have half the diameter of capelli d'angello and is, to the authors' knowledge, the thinnest pasta created by hand to date "
Orville (with S4 pseudo confirmed!)
There's lots of people who are pointing out that 1000x better might be misleading, which is certainly true here, but let me be a little more exact and explain things briefly (nb I'm a prof of Materials chemistry and am involved in PV research, although it's not my main focus). Firstly, this research does not give the efficiency which is usually the headline number*. Mainly because most of their measurement aren't using sunlight but a laser. Here they see it does interact with light to give electricity and they show the response is 1000x higher current for their new layered materials versus the unlayered type. However, as others have pointed 1000x a low number isn't great. The highest measured current** is 0.5 mA/cm2 although they actually do proper sunlight measurements (under 1.5 suns, which is a common way to measure this) and get 0.035 mA/cm2. This is something we can compare to commercial solar cells and it's almost exactly 100x lower than a commercial silicon solar cell (35 mA/cm2).
Obviously there's a lot more detail and nuance here I'm skipping over but (i) don't expect this to change the world in the near future and (ii) its a new material approach which is cool scientifically and while the uninformed media is hyping it, the scientists in the paper were perfectly reasonable.
If you have any other questions, I'll try to reply ASAP.
*RE efficiencies normal silicon ones are normally around 15%, good perovskite next-gem ones are a bit above 20%, and there's a hard physical limit of 33% for a perfect single solar cell
**They use uA/cm2 because their numbers are low. I've converted to the more common mA/cm2. These data are in Fig 3c and Fig3d. I'd recommend you have a look yourself as there's no paywall. https://www.science.org/doi/10.1126/sciadv.abe4206
The same people who presumably fill balloons with helum, want to cut down on sodum in their diet, prevent Iran from refining uranum, power their phones with lithum batteries, and enjoy singing David Guetta's house classic Titanum
If the petition hits it target, the politicians are forced to discuss it which would include agreeing workable language. It would not automatically become the law with the proposed language.
I'm call BS. Titanium isn't really very strong (about the same as copper when pure, while specialist Ti alloys are about halfway between aluminium and generic steel). People use titanium when they want something metal which is pretty strong but very lightweight. As an aside, it has pretty meh ductility for a metal and would make a poor bulletproof material, so David Guetta got that wrong too
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A few options me and my partner have enjoyed:
Bunhouse - a non-management-heavy farming simulator but you are bunnies growing plants. Cute as hell. There is a sequel where you run a bakery too but we haven't got round to that just yet.
Unrailed - might fall into the overcooked catagory, but when it gets hard and goes wrong it tends to be a looming inevitablity, not a frantic panic
Nidhogg - a 1v1 fighter, but is quick fire frantic sword fights you can button bash through which is wildly entertaining in 5 min bursts.