Recent content by LanceV

How does that fit together with the data published in July? https://docs.google.com/open?id=0B68f83tqq7QuZUdCZXhTLVl2dEE http://fukushimavoice-eng.blogspot.com/2012/07/position-statement-what-is-currently.html "Thyroid cysts found in 35% of Fukushima children examined with an average age of...

@minerva: Thanks for the hint at the KEK data. You write in your blog: Are you sure of this? In the TEPCO press releases they explicitly say: "We have been injecting sea water into the reactor pressure vessel." http://www.tepco.co.jp/en/press/corp-com/release/11031905-e.html Also the JAIF...

The GRS has been compiling the some of the known radiation data in some nice diagrams (in german but should be self-explanatory): http://www.grs.de/informationen-zur-lage-den-japanischen-kernkraftwerken-fukushima-onagawa-und-tokai Especially...

This is interesting. It seems that the emission of radioactive material only happened in "discrete" events. After each event an exponential decay can be observed, as expected if the radioactive material is not replenished. So a slow burn or oxidation or whatever of the possibly bare fuel rods...

To me it looks like insulation as well. Also, keep in mind that the temperature of the SFP was reported to be 84°C on the 15th. Hard to imagine that it would heat up to the several 1000°C required for melting in just one day. Even if there was no water and we were talking about unspent fuel...

Yes, but the question is can they inject water into the core? Maybe the pressure is to high. Or there is a danger of explosion when water hits the hot fuel rods. At first I was under the impression that the sea water is circulated through the reactor. Maybe by extracting it via the...

I still haven't found out what exactly they flooded with sea water. Do they just replace lost water in the RPV by sea water? Or are they trying to cool the RPV from the outside by flooding the containment? Or both? The use of boron suggests the former but I keep hearing about the latter...

Thanks for your input. Of course it would be possible to implement all the Dirac algebra using the functions of Mathematica. That's what the people of FeynCalc did. But since it has already been done, I would rather use it, instead of redoing it myself. And FeynCalc DOES work; its output is just...

Apparently this was a difficult question. But maybe one year later someone has got an idea? I have the same problem as the one described above.

Thanks a lot. This ist really helpful. I wonder if this procedure doesn't trouble the PF server, considering that you don't have to wait between searches and that you have options available, which are deactivated in the forum itself.

So what is the answer to this question? Can I only search for phrases (like "conservation of energy") when I upgrade my account?

Thanks a lot for the reply. Why can't we have it? Interestingly I never thought about this, but now I am unsure. Am I missing something obvious? Or is it just an observation? It seems to me, that most quantum numbers are connected to superselection rules, with only few exceptions...

Hello Forum! I am confused about this topic, too. The post of @vanesch seems to suggest, that the superselection rules are additional postulates to the quantum theory, while in @zbyszek's post there seems to be a mathematical way to deduct them? Or rephrased into a more direct question...