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Comment temporarily cause (Score 1) 120

To clarify, giant magnets can temporarily induce nystagmus if you move around too quickly in their magnetic field. The nystagmus goes away when you leave. MRI machines cause nystagmus like wearing your winter coat in a sauna causes a fever.

Comment Re:Use Thorium-based reactors instead (Score 5, Informative) 581

If you read the *entire* Wikipedia article on the Thorium fuel cycle, you would understand why Thorium is proliferation resistant instead of calling the parent "ridiculously misinformed".

http://en.wikipedia.org/wiki/Thorium_fuel_cycle

"Because the 233U produced in thorium fuels is inevitably contaminated with 232U, thorium-based used nuclear fuel possesses inherent proliferation resistance. Uranium-232 can not be chemically separated from 233U and has several decay products which emit high energy gamma radiation. These high energy photons are a radiological hazard that necessitate the use of remote handling of separated uranium and aid in the passive detection of such materials."

http://en.wikipedia.org/wiki/Molten_salt_reactor

"It is verifiable because the epithermal thorium breeder produces only at most 9% more fuel than it burns in each year. Building bombs quickly will take power plants out of operation."

Basically, because almost all naturally occurring Thorium is 232Th, it's possible to isolate Thorium fuel chemically -- without centrifugation. In other words, a country that uses Thorium exclusively for fuel has no reason to develop centrifugation technology. On the other hand, separating 233U from 232U requires centrifugation. Thus, aforementioned countries would be unable to access the 233U they produce for bomb-building purposes.

Also, the poor breeder coefficient of 233U Thorium reactors means that most of the 233U produced by the reactor is required to produce the neutrons that convert fertile Thorium into more 233U. If you were to remove the 233U from the reactor for use in a bomb, you would halt additional production of 233U by the reactor. Either you would have to harvest very little 233U over a long period of time, or you would have to supplement the Thorium fuel with some other fissile material such as bomb-grade plutonium (and if you already had access to that, you wouldn't be trying to produce bomb-grade material in the first place).

While it's possible to produce a bomb using a the thorium fuel cycle, it is inefficient and requires advanced centrifugation technology to mitigate the 232U. It would be easier to just start with uranium ore.

Comment Re:Full refund (Score 3, Interesting) 318

Indeed, Lenovo has made it abundantly clear that they want to Microsoft whores. That's why, although I love my T61, I recently bought a Dell Latitude E6500 when I needed a new computer. Dell couldn't sell it in the configuration I wanted without Windows, but they gave me an $80 discount when I told them I'd be using Linux! It's a solid laptop, metal hinges and all -- good riddance, Lenovo!

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