schroedingershat @ schroedingershat @lemmy.world

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2 yr. ago

Fuck off, shill.

Eunice Foote's experiments in 1856 and the documentation of acid rain in the 1850s were sufficient information to stop expansion of fossil fuels without a clear and precise picture of their effects.

Don't worry, geoengineering to mask the absolute worst of it will start soon and everyone will pretend it's not a problem for another decade.

Of course not. There's only been days since the research was pre-emptively published. People around the world saying "yeah, I see strong diamagnetism in a minority of samples" is the peer review. You're goal post shifting.

Do you have peer reviewed research stating that multuple verifiable videod observations of a novel diamagnetic material are whatever alternative explanation you're vaguely gesturing at without defining?

A neat thing happened and it's probably the simplest explanation that fits the data (but it might not be and that's really significant too). This extreme scepticism and semantic game-playing over whether it's true superconductivity just sparkling bosons if it doesn't come from the cooper-pair region of france is stupid and pedantic.

Superconductors work because there is one state shared by a bunch of electrons separated by an energy gap from other states they could be in. To put thermal energy into an atom (ie. Resistance), you have to have a big enough shift in energy for all of the electrons to shift out of the state. Kind of like they unionized and you can't give one a pay cut on its own. One way to achieve this is to make a regular material very, very, very cold. Lots of conductors will work, but only at or below liquid helium temperatures. Another way is to find a material where there are only a few ways for electrons to move around and cool it down or squeeze it until there's only one. The latter works at hundreds to thousands of times higher temperature (tens of kelvin rather than millikelvin), but still really cold.

Conductors have a lot of states electrons can be in. It's very easy to get one moving, but as they play pachinko through the atomic lattice they exchange tiny amounts of energy with each other and the rest of the material. Probably not a good candidate unless you're really good at squeezing.

In some ways a high temperature superconductor is more like an insulator or a semiconductor than a regular conductor.

This new material is kinda weird in a few ways. For one, the main mechanism of traditional superconductors making all electrons "the same" so they have that grouping up effect is probably not present according to some very preliminary simulations (cooper pairs). Another is that the effect is limited to movement in one direction.

There's 40 years of history and politics behind the theory, 30 years of experiments behind the leak from the korean project, and the material is very finnicky.

Completely changing the construction method of the foundation of a whole house, making it out of 90% cement/10% electrolyte (releasing 200 extra tonnes of CO2) rather than 20% cement/80% gravel and increasing costs by tens of thousands for the same effect as a 70kg $2.5k rrp battery (which will be a 50kg $500 battery in two years)?

Doesn't seem huge other than in the literal size sense.

And everything is very different from when NiCd was the dominant technology. You're welcome.

But guns are inferior to melee combat in the 40k universe so the kids would win.

It's a milligram of tungsten and a few grams of glass and steel.

On the other hand they're only on a few minutes a day. Not really something to be concerned about either way.

It's credibly a strong diamagnet with a phase transition. Either it's a completely new thing with no theoretical basis, or it's the first reproducable example of a 1d superconductor. Either is a huge breakthrough.

It's similarly hard to make an airbag or seat belt, but you can still undo the bolt without the manufacturer in another country bricking your car without any considerations of your local laws.

250W is an output limit not an input. And power is power.

E-bikes in the US (the subject) do 32 (or more on downhill stretches where the motor finally tops out and the rider is fresh). S-pedelecs are the ones with much higher fatalities for the elderly in the metherlands and do 45. Nornal pedelecs in europe also produce much more than 250W

A city is considered to have banned cars if there are any areas anywhere that pedestrians can walk without having to be hyper-vigilant against them, or if cars have less than 90% of public space dedicated to them.

The problem isn't 14 or 80 year olds. The problem is pretending motorbikes are bicycles because they have accessory pedals.

A bicycle as a class of vehicle moves at about 25km/h on average, doesn't accelerate very fast and is a bit slower after hills or corners. An ebike is a bicycle that you pedal a bit less, not a vehicle that moves at at least 32km/h any time it is moving.

250W 25km/h limits are about the highest you want for the default vehicle type. And a real 250W max, not the corrupted testing process currently used for euro standards designed to test a lower bound.

Sprawl is the opposite of high population density. You're asserting that there is both.

So yes, you are doing the former.

Part is the neoliberal economic model is really really bad at big projects. Part is the regulations and engineering complexity involved in not having them all shut down because they caught fire or the steam generators corroded (almost every program has "cheap" reactors at the beginning which have massive maintenance issues and leaks 10-30 years later, followed by expensive ones with massive delays). Part is corporate greed. Part is revealing and stopping rampant fraud and finding safety-compromising cost-cutting measures. Part is the lack of pressure from the military to make it happen as there is no longer a need for as much Plutonium. Part is that there actually are some semblance of environmental laws. Part is the fossil fuel industry interfering (as they do with all non-fossil-fuels).

It's not a remotely extraordinary claim though.

They claim to have found an unreliable, method for generating impure samples of a superconductor type predicted by a 40 year old theory.

One member of their group jumped the gun on publishing before the people that did the bulk of the work were ready, so the others released more detailed info on what they had so far.

"The Japanese people all live in one place but are spread out everywhere" isn't even a coherent statement.

You will likely be lumped in with everyone else, just like is being done to previous generations in this thread.

This is fine. If there is anything I can be doing differently to stop murdering current and future generations and am not, then I share some culpability. I also share blame for not reducing my impact more, sooner and for tolerating those around me who are doing far worse.

Defending the actions of the majority who do not care, or who actively care to make the problem worse is where I have an issue. You are sharing rhetoric created to help those in power amass more power and ruin the world.