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Comment I'm working on my analog home (Score 4, Funny) 153

I bought a whole bunch of op-amps and rheostats, but I'm having a hard time trying to get them to implement all of my lighting "scenes". The voltages often won't converge to a stable solution, and it's really hard to analyze all the differential equations with just my slide rule.

Comment Re:Nope (Score 5, Informative) 47

If it glows, it's not dark.

That's fairly easy to understand.

According to TFA, the dark matter isn't glowing. Instead, it is annihilating when it collides with another dark matter particle, which turns it into normal electrons and positrons, which then ionize normal gas and create the glow.

It's a long sequence of events, but in case it pans out, at least it might be able to address the unwillingness of most people to accept that something could possibly exist unless it somehow interacts with the electromagnetic field.

Comment Re:This benefits Russia and China (Score 1) 205

Russia is testing nuclear delivery systems like their new "Skyfall" missile. But they're not testing warheads. Now, in fairness, Trump is very old, quite possible senile, and not terribly bright so it's entirely possible that he doesn't understand the difference between Russia testing a missile and Russia testing a bomb. But his order is making news because, as written, it's calling on the United States to resume the live-fire testing of nuclear weapons and we stopped doing that in (off the top of my head) 1992.

If Trump is trying to go tit-for-tat with a rival over nuclear weapons testing it's basically North Korea. China hasn't shot one off since 1996, Russia stopped before us in 1990.

Both China and Russia are suspected of having run clandestine tests in the 2000s but if US intelligence has more than a suspicion they're playing it close to the vest.

Comment Re:Never mind the fish... (Score 4, Interesting) 67

I think that the theory is that mercury in the environment is converted to methylmercury by microbial activity, then it bioaccumulates in fish. Presumably, anything that is leaching from fillings is metallic mercury, which is far less toxic than methylmercury.

I've seen claims that the mercury is so firmly bound in the amalgam with silver that your exposure is negligible, but I'm not sure how much I believe that. I've had quite a few worn out mercury fillings replaced over the years, and I always wondered how much of the ground up fillings ends up getting ingested in that process.

Of course, the newer fillings are largely some kind of UV-activated epoxy resin, probably a different exact brew of chemicals for each one. I wouldn't be surprised if someone eventually figures out that some of those chemicals pose risks as well.

What can you do? Not getting your mouth fixed is known to be risky as well. Bacteria cause inflammation that causes your own body to release highly toxic chemicals.

Comment This benefits Russia and China (Score 5, Insightful) 205

Testing of nuclear weapons among the major nuclear powers tapered off with the end of the Cold War and the international norm against testing creates a real disincentive to test, even in well contained, underground scenarios.

Back when testing wasn't so taboo the United States had a HUGE advantage in terms of the measurement and recording of test data. That advantage stemmed from computing advantages which have since ebbed. Normalizing live testing gives Russia and China an opportunity to catch up with that data and modeling advantage consequence free. "The US is testing, so we should too."

Trump isn't leaning into testing because Russia or China told him too -- he's just a vainglorious blowhard who likes the idea of setting off nuclear weapons -- but this nevertheless benefits American adversaries a great deal more than it benefits the United States.

Comment Re:Okay but... (Score 1) 14

I mean, some are already openly discussing how humanity should be OK with being wiped out so that the universe can become what it's supposed to be, so long as AI is the reason we're wiped out. If that's not cult thinking, I don't know what it is.

It's like those Cthuluh (sp?) stories where you have cults that worship a destructive god that kills them instantly whenever it manifests. When you read it you think "why would they worship something like that ?!?" And now I'm not surprised anymore.

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