Jul 282023
 

A description of the phenomenon, the physics and history. Includes a discussion of the politics of it, how it’s supposedly misogynistic. But included in the video are a number of old movie clips showing how vocal fry (at least used to) feature a lot in depictions of High Upper Class British Dudes… who are every bit as annoying as a Kardashian. Remember: we fought two wars to keep those inbred aristocrats from ruling over us.

Also includes some clips of native Finnish speakers deploying the vocal fry that they seem to have developed to a high art. A high, brain-erasingly irritating art. I think I’d lose my mind listening to that all day. Gah.

Most of this is informative, but there is some virtue signalling. Part of that is self-evidently and unironically dumb. The narrator claims that part of the reason why a lot of people don’t like vocal fry in young American women is because it makes them sound like they’re trying too hard to display excessive confidence. And part of the reason why a lot of people dislike the polar opposite of vocal fry, “uptalk” (where the speaker ends sentences with higher tone, making it sound like they’re asking a question), is because it makes them sound like they have an excess of 8uncertainty* about the statements of fact they’re making. Narrator says something like “Make up your minds, misogynists.” The here’s the thing: “vocal fry = excess confidence” and “uptalk = excess uncertainty” are not mutually exclusive concepts, and thus you don’t need to choose… both can be entirely true and valid simultaneously, since they cover very different things. Kinda like how you can dislike both being doused in liquid nitrogen *AND* dislike being torched with napalm. But other than that sort of thing, it’s an interesting video.

 Posted by at 3:43 pm
Jul 282023
 

The driving motivation behind everything in the movie “Avatar” was humanity’s need of the mineral “Unobtanium.” It was special since it was a room temperature superconductor, allowing for a lot of advanced technologies. In the movie, humanity would travel light years and wipe out primitive alien civilizations to get it. But recent news suggests that we might not need to… but only if the study turns out to be true. And scientists are dubious.

 

A spectacular superconductor claim is making news. Here’s why experts are doubtful

Korean scientists claim to have created a room temperature superconductor (up to 127 decrees C). The video *seems* to back that up, but who knows. This will need to be tested and replicated. And the chunk they’ve displayed seems kinda cruddy… but the history of prior low-temperature superconductors seems to be that the first bits out the gate are cruddy, with quality following along as production techniques are refined.

*IF* this pans out, there are two fantastic takeaways here. The first is “hey, awesome, room temperature superconductor.” Maglev trains and such become a lot easier. CAT scanners won’t need liquid helium supplies to keep their magnetic bearings working.

But the second thing to note should be noted and noted *hard:* the material is primarily lead, doped with copper oxygen and phosphorus. You know what I *don’t* see there? I don’t see “rare-earth elements that we have to go hat in hand to the Chinese to obtain.” We don’t need to throw money into third-world hellholes to have them scrape vast pits into the ground. Domestic mining and production would seem entirely feasible.

That’s all great. I hope it bears out. But history is full of fabulous press releases that turned out to be fraudulent or simply wrong. That’s certainly possible here. We’ll just need to wait and see.

 

Here’s how Wikipedia describes the material. See how far you get before you go “I dunno what the frak they’re talking about:”

The chemical composition of LK-99 is approximately Pb9Cu(PO4)6O such that—compared to pure lead-apatite (Pb10(PO4)6O)[4]: 5 —approximately one quarter of Pb(II) ions in position 2 of the apatite structure are replaced by Cu(II) ions.[1]: 9  This partial replacement of Pb2+ ions (measuring 133 picometre) with Cu2+ ions (measuring 87 picometre) is said to cause a 0.48% reduction in volume, creating internal stress inside the material.[1]: 8 

The internal stress is claimed to cause a heterojunction quantum well between the Pb(1) and oxygen within the phosphate ([PO4]3−) generating a superconducting quantum well (SQW).[1]: 10  Lee et al. claim to show LK-99 exhibits a response to a magnetic field (Meissner effect) when chemical vapor deposition is used to apply LK-99 to a non-magnetic copper sample.[1]: 4  Pure lead-apatite is an insulator, but Lee et al. claim copper-doped lead-apatite forming LK-99 is a superconductor, or at higher temperatures, a metal.[4]: 5 

 

Here’s a video discussing the “discovery” and the causes of skepticism:

 

 Posted by at 2:40 am
Jul 262023
 

Study results: unsurprising.

Higher Cognitive Ability, Less Concern for Political Correctness – Study Finds

As you can see, there was a moderate positive correlation between cognitive ability and support for freedom of speech, and a moderate negative correlation between cognitive ability and concern for political correctness. (The asterisks tell us these results are statistically significant.)

North Americans with higher cognitive ability are more supportive of free speech and less concerned about political correctness. They’re less woke.

It’s a single study and not a terribly comprehensive one. But with a sample size of a single Kamala Harris or AOC or Swalwell, it’s easy to conclude that wokism leads to a massive case of brain rot.

 Posted by at 12:21 pm
Jun 302023
 

A NASA article on the status of the X-57 “Maxwell” says that they’re wrapping up work on it, with no mention of it actually flying:

X-57 Project Creates Paths Toward Electric Aviation

The X-57 is a modification of an existing conventional aircraft to be all-electric. Lots of new technologies were integrated and apparently some useful advances were made, but the real issue remains batteries. Until the energy density of batteries gets a *lot* better, electric-powered aircraft are going to remain pretty niche. Flying the X-57 would be nice, but with the existing batteries it’s kind of dead in the water.

What would be great is if NASA kept working on the X-57 at a low level. The technologies onboard would be occasionally upgraded, and when meaningfully better batteries – or perhaps some sort of modular fuel cell system, perhaps, or indeed a small nuclear reactor (a man can dream) – become available, integrate them into the vehicle and at last fly it.

 Posted by at 10:49 am
Jun 102023
 

Even with a specially made setup and at close range, it’s difficult. This should drive home the difficulty and impressiveness of hit-to-kill interceptors that take out incoming warheads or missile from tens of *miles* away at closing velocities far greater than those of mere bullets.

Also: bullets don’t as a rule fuse together; rather, they explode in a shower of flattened lead fragments.

 Posted by at 7:20 pm
Jun 032023
 

Good news:

 

In a First, Caltech’s Space Solar Power Demonstrator Wirelessly Transmits Power in Space

This is *many* orders of magnitude away from a practical solar power satellite… but ya gotta start somewhere.

And on the other hand, bad news:

 

Boeing finds two serious problems with Starliner just weeks before launch

Problem one: bits of the parachute system aren’t as strong as they should be. Bad, but readily solvable.

Problem two: the wiring is flammable. This… is monumentally stupid, a problem that has been well understood since the Apollo 1 fire. this may well require that the capsule be largely disassembled so that *miles* of wiring can be replaced.

 

Good luck with *that.*

And while Boeing continues to struggle to get a capsule not fundamentally different from Apollo flying SpaceX continues to send crews to the ISS in Dragons.

 

 Posted by at 4:03 pm
May 252023
 

Well, here’s a study to shock exactly nobody:

Antagonistic narcissism and psychopathic tendencies predict left-wing antihierarchical aggression, study finds

Narcissistic individuals and those with psychopathic tendencies are more likely to strongly endorse left-wing antihierarchical aggression, according to new research published in Current Psychology. Antihierarchical aggression refers to a specific type of hostility aimed at challenging or opposing hierarchical power structures or authority figures. The new findings shed light on psychological mechanisms that motivate some individuals to participate in violent political activism.

 

You want a “red flag law?” Start here.

 

The study itself:

Understanding left-wing authoritarianism: Relations to the dark personality traits, altruism, and social justice commitment

This, to somewhat stretch the discussion a tad, argues against the recent notion that “Star Trek has always been woke.” Yeah… no. The original series made it clear that in the 23rd century, the Federation – which of course included Humanity – had basically wiped out mental illness. Crazy people more or less didn’t exist in any meaningful form. Which would argue that far lefties would be rare in the United Federation of Planets.

 Posted by at 9:47 pm