uvdiv

66 ms·

601.
by uvdiv 16y ago
That report is here (106.3 mSv measured): http://www.tepco.co.jp/en/press/corp-com/release/11031219-e....
602.
by uvdiv 16y ago
"We've confirmed that the reactor container was not damaged. The explosion didn't occur inside the reactor container. As such there was no large amount of radiation leakage outside," [Japan Chief Cabinet Minister Yukio Edano] said. "At t
603.
by uvdiv 16y ago
This was confirmed by Tokyo Electric Power (the operator): "A portion of the reactor's fuel rods, which create heat through a nuclear reaction, had become exposed due to the cooling-system failure. The spokesman for Tepco said 1.5 meters o
604.
by uvdiv 16y ago
More detailed cutaways: http://i.imgur.com/Oj4kg.png http://i.imgur.com/CckjP.jpg from, respectively, Madgi Ragheb, UIUC https://netfiles.uiuc.edu/mragheb/www/NPRE%20457%20CSE%20462... NRC http://www.nrc.gov/reading-rm/basic-ref/teac
605.
by uvdiv 16y ago
It looks like a hydrogen flame to me. The color is right (faint blue, barely visible), and see how fast it rises straight up? (I am not an engineer)
606.
by uvdiv 16y ago
No, actually the fuel pellets never need to come in contact with water; it is their cladding, which is a zirconium alloy ("Zircaloy"), which can react with steam under extreme conditions. It's a redox reaction: Zr + 2H2O --> ZrO2 + 2H2
607.
by uvdiv 16y ago
I have no clue what's going on (and I Am Not An Engineer), but I'm fairly sure that in this photo http://upload.wikimedia.org/wikipedia/commons/e/e8/Fukushima... The longer, rectangular buildings on the seaside are the turbine halls, and
608.
by uvdiv 16y ago
There's a qualitative difference between a law that mandates an action after something goes wrong (tort?), and a law that mandates an action before anything goes wrong, in order to prevent it from going wrong (most regulation). This is a
609.
by uvdiv 16y ago
Here is the map [1]. The Aleutian islands are hit first, but it seems the big effect is the slowing-down of the wave in very shallow waters. (Here's depth maps: [2][3]). Note the contours -- it takes ~9 hours for the tsunami to cross this
610.
by uvdiv 16y ago
If (in early 2000) You Had Bought Nokia Stock Instead Of A Nokia Phone... http://www.google.com/finance?q=NYSE:NOK ...you could today afford two styrofoam cups and a piece of string. An off-hand observation: Nokia's late-90's rise looks j
611.
by uvdiv 16y ago
And political -- an attempt to kill organizations that tend to be Democratic (this would be equivalent to trying to dismantle fundamentalist churches, as their Republican leaning). I'm sure that would be an issue if fundamentalist churc
612.
by uvdiv 16y ago
That's different; that only happens when you have ignorant, unthinking people who do not critically examine their own ethics when to do so would challenge social norms and/or their own material interests.
613.
by uvdiv 16y ago
Yes, but that kind of motion (tachyonic) is unphysical. It violates causality: you can imagine that by "rotating" the "horizontal" motion very slightly "downwards", in a different reference frame it is backwards time travel. The salient thi
614.
by uvdiv 16y ago
Are those sources reliable? I note that Al Jazeera reports Saif al-Islam making a televised address very recently: http://english.aljazeera.net/news/africa/2011/02/20112211112... "Early Monday" Libyan time means within last 4 hours; your
615.
by uvdiv 16y ago
Sorry, I meant to vote "No" but accidentally clicked "Yes". Which makes my vote true -- but only if it is not true.
616.
by uvdiv 16y ago
This is why some [who?] have advocated 100% rebating of the revenue from a Pigovian tax; e.g. if a smoking tax brings in $10 billion, that $10 billion is rebated from the income tax, so there is no revenue. It removes the misincentive for g
617.
by uvdiv 16y ago
There are lots of such reactor designs. Liquid metal fast reactors, and thorium breeders for two.
618.
by uvdiv 16y ago
His conclusions are the same; the difference is in how he reacts to them. > If fast reactors are 60 times more efficient, the same extraction of ocean uranium could deliver 420 kWh per day per person. At last, a sustainable figure that
619.
by uvdiv 16y ago
It's your ludicrous conflation of the OP's genuine concern for the material welfare of these people with "ethnic cleansing" that's abhorrent.
620.
by uvdiv 16y ago
> Primitive people's lives are short, yes. But that they are uncomfortable and brutish is at best an uninformed value judgment that supports the narrative of civilization. Then let them make their own value judgement. Offer them 80-yea
621.
by uvdiv 16y ago
> BTW: you to know that Western medicine is not the only medicine in the world. There is only one class of medicine in the world, and is scientific. Your attempt to frame science-based medicine as a racial or cultural property ("West
622.
by uvdiv 16y ago
http://www.wunderground.com/about/background.asp > The growing Internet weather program was given the name Weather Underground, a reference to the 1960's radical group that also originated at the University of Michigan, which had take
623.
by uvdiv 16y ago
Maybe I'm just ignorant, or blinded by cognitive biases, but I always imagine the combination of gas/diesel and internal combustion engines as an engineering optimum, reached iteratively after decades of wandering through parameter space. A
624.
by uvdiv 16y ago
> The above circumstances provide a remarkable example of path dependency. Had these contingencies not obtained, rockets with orbital capability would not have been developed so soon, and when modern societies became interested in launc
625.
by uvdiv 16y ago
> Your jammer just needs to be louder than the satellite by as much as the antenna gain. Given that the satellite is 42000km away, while the jammer can easily be 10km away, the jammer signal has a 70dB "gain" just from being closer. Yo
626.
by uvdiv 16y ago
> Light water plants use water as a moderator and a coolant leak would relieve pressure making a steam explosion unlikely. I mean, the pressure in the containment building. Isn't that the purpose of the containment walls, to withstand
627.
by uvdiv 16y ago
Yes, the parent brought up PWRs.
628.
by uvdiv 16y ago
Here's a large (35 inches) cutaway drawing of a Magnox reactor, which gives some visual scale to the monster that is a gas-cooled reactor: (PDF) http://econtent.unm.edu/cgi-bin/showfile.exe?CISOROOT=/nucen... (Note this isn't the AGR that
629.
by uvdiv 16y ago
> There's no reason for 6 foot thick, steel re-barred concrete containment in a negative void coefficient reactor! To contain the steam explosion in the event of a coolant leak. That is, pressurized liquid water at 300 °C flashing into
630.
by uvdiv 16y ago
(In a related estimate, 0.0003 kWh/search means 54 CPU-core-seconds of indexing per search, assuming (without any justification and probably wrongly) that (i) most electricity consumption is by CPUs during indexing and (ii) they are using x

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