Eka-Thorium

Now, this is neat: A superheavy element (Z=122, A=292, tentatively named “eka-Thorium” or “unbibium”) which is relatively stable (t1/2 ≥ 108 yr) has been observed in nature, in natural Thorium samples. (It’s called eka-Thorium because it would sit directly below Thorium on the periodic table; as a result, it’s chemically very similar to Thorium, which means it can mix in to Thorium ores and stick there because it doesn’t separate very easily)

This is a whole 30 atomic numbers above the next-largest naturally occurring element, Uranium. (Z=92, A=238) It’s the first empirical proof that superheavy nuclei can actually exist and be stable.

Edit: Some history – the last time an element was discovered in nature was Francium (Z=87), which was discovered in 1939 by Marguerite Perey. It was thought highly likely that that would be the last time anyone ever did.

Published in: on April 28, 2008 at 10:43  Comments (26)  
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The Lord’s our shepherd, says the psalm, but just in case…

On 6 Sep 2007, Israel bombed the hell out of a facility in Syria which, rumor has it, was nuclear in nature. Today the CIA gave a presentation to Congress showing the detailed evidence, which the Washington Post has kindly presented here.

Some conclusions from looking at this, and being generally familiar with nuclear equipment. This is very, very different from the rather dubious WMD intel used in Iraq; rather than fuzzy satellite photos, someone appears to have been able to walk around and inside the building during its construction with a camera and take pretty clear pictures, which can then be compared in detail with some very good-quality satellite photos.1

Assuming that the pictures are real, they are a smoking gun.2 This building was a nuclear reactor; it was of a type that can be used to produce Plutonium for nuclear weapons, but is utterly useless for any research or power generation purpose;3 it appears to be a slightly smaller4 carbon copy of the North Korean Plutonium production reactor at Yongbyon; it was in a shape that could probably be started up within weeks when it was destroyed; there is clear and repeated evidence of extensive NORK involvement in its design, construction, and operation.

Now, a more interesting question. This reactor was obviously very close to startup, which means they had to have nuclear fuel lying around somewhere in fairly large volumes. (There’s no evidence at all that Syria was working on the ability to enrich Uranium on their own, as Iran is) I’m guessing that the bombing didn’t hit a large fuel storage area, since everyone else would have noticed clouds of radioactive soot and dust and generally been a lot more worried. Presumably this fuel came from some combination of North Korea, Russia and Pakistan. (Those being the three people with fuel who would even remotely consider doing business with Syria)

So… where is it?

Presumably Syria’s next move is to try to build again, this time deep underground. NORK nuke people were on-site within days of the original attack, probably to do damage assessment; my guess is that they would tell al-Assad that this is what he gets for trying to build on the cheap in the desert, and if he really wants to protect his sites he’ll invest in their better-concealed designs. This is going to lead to something a lot harder to find and destroy. The main things which would prevent that is if the Syrians started to run low on money, or if the government suddenly found itself with enough bigger problems on its hands that extremely expensive construction projects became less enticing.


1 Whereas the Iraqi WMD photos that Colin Powell infamously presented to the U.N. were largely satellite photos with analyses explaining why this particular group of trailers could be a bio weapons plant, that group of trailers could be a chemical weapons storage facility. There was never anything up-close or really unambiguous there; at least, nothing that anyone outside the CIA ever seems to have seen.

2 Well, at this point, more like a smoking hole in the ground, but I digress.

3 It’s not good for power generation for a couple of reasons, but the most obvious one is that there’s no power plant attached to it, and the building very obviously has no room to attach one. The cooling system is simply transporting heat as quickly as possible into the Euphrates river, rather than using that heat to drive a turbine. Also, this would be a very bizarre place to build a power plant, since it was in the middle of nowhere in the desert. (And goats don’t really need that much electricity) It’s not good for research because the entire reactor vessel was placed about as inconveniently for experimenting with it as is humanly possible, it has almost no access points for probes or tweaks (as is clear from the top and side pictures), and this general design is very inflexible. Of course, Syria isn’t exactly famous for its physics research, so one can’t imagine that there was really an active cutting-edge science program going on there for other reasons as well.

4 Count the holes on the top for reactor rods; this one is 9 holes across at the top, Yongbyon is 11, but it’s clearly a scaled-down carbon copy of the design.

Published in: on April 24, 2008 at 21:02  Comments Off on The Lord’s our shepherd, says the psalm, but just in case…  
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From the Telegraph…

(Slightly NSFW, but this is a reputable newspaper)

Apparently HM Treasury really is run by a wunch of bankers. Who, it must be said, can treat their situation with good humor:

“It is true that it caused a few titters among some staff when viewed on its side, but on consideration we concluded that the effect was generic to the particular combination of the letters OGC – and it is not inappropriate to an organisation that’s looking to have a firm grip on Government spend.”

Published in: on April 24, 2008 at 15:58  Comments (10)  
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Peace in the Middle East…

According to Jimmy Carter, Hamas is ready for peace — if Israel withdraws to its 1967 boundaries (i.e., cedes all of the West Bank, Gaza, Golan, and half of Jerusalem) immediately, it will agree to a ten-year cease-fire.

Translation: “If you accede to our demands right now, we won’t attack you1 for the next ten years.”

My suggested answer: “Cus ’emac.2

1 Of course, we reserve the right to arrange for other groups to attack you, or to transfer our weapons to other groups.

2 When one of my officemates asked what that phrase meant, someone else walking by translated: “Well, the second word means ‘your mother.'”

Published in: on April 21, 2008 at 14:41  Comments (10)  
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Something else interesting…

A very interesting US civics quiz. Difficult, and fun.

You answered 55 out of 60 correctly — 91.67 %
Average score for this quiz during April: 66.8%
Average score since September 18, 2007: 66.8%

Published in: on April 18, 2008 at 13:56  Comments (21)  
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This is awesome.

My former boss just published a great little article about things you need to know when building a search engine. It’s chock-full of some really excellent advice for anyone building any large-scale computer system. For example:

Ah, but SCSIs are hot-swappable, you say. Get over it. Remember, no colo. You cannot afford it and you don’t want it. So if you’re worried about disk failures since you picked your disks out of a Dumpster, then my advice is don’t screw the covers onto your machines and don’t use four screws per disk. This makes IDEs pretty easy to repair, but certainly not hot-swappable.

I do sometimes miss working with Anna.

Published in: on April 18, 2008 at 12:44  Comments (6)  
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RIP Edward Lorenz

Edward Lorenz, meteorologist and founder of chaos theory, passed away today at the age of 90. He discovered the chaotic properties of nonlinear systems as a result of an unexpected result while running numerical weather simulations in 1961, and changed the way we think about complex systems.

For those of you with a mathematical background, I recommend taking a look at his 1963 paper “Deterministic Nonperiodic Flow,” in which he proves one of the most basic results of chaotic dynamics (that nonperiodic flows are unstable against small perturbations), applies it to a simple problem in fluid dynamics, demonstrates vividly and in pictures the way that the system becomes unpredictable, and reflects on its significance for weather prediction. It seems a fitting way to mark his passing, and the paper is great; very straightforward1 and well-written, and full of the best pictures that 1963-era computing could produce.

1 By comparison to most technical papers in mathematics, that is, and especially to most papers on differential equations. I realize that this is not the best definition of “straightforward.”

Published in: on April 17, 2008 at 12:25  Comments (12)  
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This is just awesome…

The Leningrad Cowboys and the Red Army Choir singing “Sweet Home Alabama.”

Published in: on April 3, 2008 at 21:45  Comments (12)  
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Day Sixty

At tonight’s Clinton-Obama debate, one of the hosts asked an almost inevitable question about Clinton’s “day one” rhetoric: “What would you do differently on day one than a President Obama would when it comes to managing the nation’s economy?” After both candidates answered, it was hard to avoid the impression that the real answer is “not much;” they both had fairly similar plans. And this was the case with a lot of what they said tonight; the policy differences between the two candidates seem relatively minimal, and I suspect that a lot of the places where they do differ are the sorts of things that would change after the election. (I wouldn’t be surprised if Obama’s health plan ended up taking on more aspects of Edwards’ as it got prepared; and I would be surprised if Clinton would really freeze the prime interest rate for five years, as she promised to do tonight.1)

But this made me realize where I think the biggest difference between the two candidates is: Not on day one of a presidency, but on day sixty.

If a new president were to start to push the sorts of policies that both candidates have endorsed, about health care, the economy, or Iraq, they would start to run into serious resistance. Within two months, some very powerful interests would have marshalled considerable forces to oppose those changes. And on that day, what really matters is whether the president has the ideological leadership of the country; can he or she go out in public, make the case that This Is What We Need To Do, and cause people to form up behind the idea?

Simply having a sheaf of policy proposals, no matter how well-designed, is not enough. The power of the president isn’t in the passing of laws; it’s in the bully pulpit, in the power to set the policy direction of the country and rally the citizenry to do what needs to be done. Bill Clinton knew how to do that. Ronald Reagan did, too. Obama has often been compared to JFK, and I think the comparison is somewhat apt; he may lack experience, but experience has been a poor predictor of presidential success. But Hillary Clinton? After half a year of campaigning, I still don’t know what her grand vision is. From hearing her response and Obama’s to the question of meeting with Raúl Castro, I would almost think it was “cautiousness.” As she’s fond of saying, she has been tested before against strong Republican opposition — but she failed. Her health care plan went down in flames because she didn’t unify anyone behind it, and I haven’t seen any evidence that she’s gotten better at that. Plus, of course, there is a significant field of Republicans who would consider it their first responsibility to stymie anything Hillary Clinton does as a matter of principle; AFAIK, few feel similarly strongly against Obama.

So what I would foresee from a Clinton presidency is a mess. A lot of exciting proposals coming out on the first day, lots of big, thick bills going into the legislature, lots of lobbyists showing up, lots of sneaky ads and negative campaigns running around in the media, and ultimately her being forced to back down. Followed by four years of not being very effective, because the Democrats in Congress can’t get their act together enough to pass things even when they are in the majority unless they have a strong leader, and very likely a Republican president in 2012.

I don’t know what would happen from an Obama presidency, but it’s less likely to be that. Faced with a Day Sixty challenge, I expect that he would have been out there in front of the country for the entire time prior to that, forcefully making his case for reforms; the negative campaign is far less likely to even start, much less gain serious traction, if the people making it realize that public opinion is strongly against them to begin with. I don’t know if his policies would be as good in their details, but they would have a chance to pass.

So this past primary, I voted for Obama. I support his campaign and think he would make a genuinely better leader for this country than Hillary Clinton, a better leader than John McCain.

I don’t want a president with nothing more than policy papers; I want one who can help restore our vision of America as a country worthy of emulation.

One more thing…

Published in: on February 21, 2008 at 19:14  Comments (66)  
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More madness.

A fascinating little clip, courtesy of Warren Ellis’ blog, of a video from Westboro Baptist Church. (The “God Hates Fags” crew) They got together to sing a song called “God Hates The World,” to the tune of “We Are The World.” It’s morbidly fascinating – you don’t get to see real, unabashed dystheism in the world very often. They aren’t even preaching “repent or else;” the message is very clear, God hates you and everybody else, nothing you can do will change it, he’s going to burn everyone in Hell.

It’s sort of like seeing the cultists of the Elder Gods from H. P. Lovecraft come to life; their god is going to wake up and destroy the world, but presumably they’re still worshipping him so that they’ll be eaten last?

Published in: on December 20, 2007 at 23:54  Comments (4)  
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