tarre

7 ms·

1.
by tarre 6y ago
Don Quixote: "To attain to eminence in letters costs a man time, watching, hunger, nakedness, headaches, indigestions, and other things of the sort."
2.
by tarre 8y ago
>Is is being CsTreated since eight years, why we do have radioactive Caesium still accumulating in the coast? As far as I know, this is because about 10 PBq of Cs-137 was released during the accident and the released material is transfer
3.
by tarre 8y ago
There are reasons, why not to do that: 1) DF doesn't add up like that at low concentrations. Then it comes down to selectivity of the material. Sodium and cesium have similar chemical characteristics, but CsTreat is very efficient in s
4.
by tarre 8y ago
Decontamination factor of 100 is rather terrible compared to DF of over 8 million of actual filter materials, which are being used at Fukushima: https://www.fortum.com/sites/g/files/rkxjap146/files/d
5.
by tarre 8y ago
Hopefully one day ESA will also use radioisotope thermoelectric generators... :( https://en.m.wikipedia.org/wiki/Rosetta_(spacecraft)
6.
by tarre 9y ago
I didn't know about those reactors. Interesting. When writing the answer, I didn't even consider, that those reactors need to be fast reactors. In retrospect it is obvious, but makes controlling the power even harder.
7.
by tarre 9y ago
Thanks for correction. Unfortunately I'm not able to edit it anymore.
8.
by tarre 9y ago
In fact the fission[1] part in such small scale is hard. Curiosity and other probes using thermonuclear batteries harness alpha decay[2], which is relatively easy as it happens whether or not you want it to happen, but creates also much les
9.
by tarre 9y ago
We were both in a very small school in the countryside and when I was on 5th and she on 6th grade, we had wonderful teacher, Harri Ketamo (Google him and you'll end up wondering, what on earth he was doing in that school). Harri was es
10.
by tarre 9y ago
I still remember Kaisa telling in primary school, that Euclid's proof of infinite number of prime numbers is often considered as the most beautiful proof in mathematics.
11.
by tarre 11y ago
Curiosity has a battery of 5 kg and it delivers 2 kW thermal and 125 W electric power.
12.
by tarre 11y ago
Maybe the biggest drawback for tritium is the decay energy of 0.02 MeV compared to 5 MeV of Pu238. On longer missions also half-life may create problems (12 years / 70 years). E: I'm very slow with my phone...
13.
by tarre 12y ago
In Finland the most common reason is, that hardly any suitable rivers exist any more as they have been dammed.
14.
Scientists discover the ideal dance moves for men(lifehacker.com)
3 points by tarre 12y ago|0 comments
15.
by tarre 12y ago
Is there large possibility to find any wrecks on this area?
16.
by tarre 12y ago
Nuclear waste is waste because it doesn't contain enough fissile nuclides (i.e. nuclides, which could produce heat in fission). It has almost nothing to do with radioactivity or decay power. Radioactivity just makes it harder to manage
17.
by tarre 12y ago
This article could be applied to the organizers of huge international sporting events like FIFA and Olympic committee. I would love to see the books of those organisations checked.
18.
by tarre 12y ago
Moreover in many countries the taxes are related to CO2 emissions, which will result in savings as well.
19.
by tarre 12y ago
I think even one satellite is enough, if you have enough data points. You can tune the clocks based on the signals captured, when the location of the plane was known. After that each signal gives you a sphere, on which the plane is supposed
20.
by tarre 13y ago
I think they would be better off offering Win7 at discounted price. My wife asked me to install Ubuntu on her new laptop after short experiment with Win8 and now she is also trying to convince her very untechnical parents to switch from Win
21.
by tarre 13y ago
At times like this, I'm reminded of the nuclear power plants of the world and their automation based on punched cards. When speaking about systems, which need maximal reliability and are strictly controlled by authorities (air planes,
22.
by tarre 13y ago
Thanks for sharing the link. It was a very good read.
23.
by tarre 13y ago
I am not an expert on this area, but I have got impression, that the German WW2-era assault rifles had quite complex design and they were expensive to manufacture. I think AK47 was exactly the opposite.
24.
by tarre 13y ago
This is a very interesting tournament. AFAIK it is the only computer tournament with long time controls and equal hardware for both sides. I have been following it for some years already since the times of Old TCEC. The most interesting gam
25.
by tarre 13y ago
Did you try to send them just the pdf-file? That worked for me.
26.
by tarre 13y ago
Water has quite low thermal conductivity (~0.6 W/(m*K)). If you exclude convection you can easily have such a temperature difference. For example with heat flux of 100 W/m2 you have 60 K temperature difference over a 36 cm thick l
27.
by tarre 13y ago
You should not forget, that the result depends heavily also on the listener. Probably the hardest to understand English I have ever heard has been spoken by two native Englishmen who I met last year at a hostel in Spain. Similarly in my opi
28.
by tarre 13y ago
You don't need to fake it. You just need to know the location of the satellites and delay the signals appropriately.
29.
by tarre 13y ago
Unused nuclear fuel has very low radioactivity. It is the fission products, which are the problem regarding radioactivity. Were it a used fuel bundle, they wouldn't be standing there.
30.
by tarre 13y ago
Everyone I have talked with about DST has had opinion, that the time to be chosen as base time used around year is the summer time. I would also change daylight at summer from 5am to 8pm, but i would also rather have in winter daylight at 1

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