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Archived threads in /sci/ - Science & Math - 795. page

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File: french nuke.jpg (342KB, 1200x800px) Image search: [Google]
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Lets say some advanced country with a well developed peaceful nuclear program wanted to develop nuclear weapons, secretly of hte entire world.

How hard would it be?
How long would it take them?
How much personnel would be required?
Could it be kept secret?
How much would it cost?

Countries such as Australia, Canada, Germany, Italy, Netherlands, or Sweden.
26 posts and 6 images submitted.
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>>8720046
Pretty much any first world country could do it in fairly short order. In the case of Australia, Canada, Germany and Italy I believe there are even arrangements in place for sharing of nuclear weapons from the cold war days.

The major difficulties with obtaining nuclear weapons are fuel enrichment and explosive lensing. The latter can probably be figured out by a couple of grad students and a computer these days. The former tends to be fairly expensive and requires either breeder reactors (for Pu239) or lots of centrifuges (for U235). Centrifuges are used anyways for refining raw uranium into energy grade uranium, but getting weapons' grade (90%ish) is expensive as fuck and will never go unnoticed. As for breeder reactors, those are fairly easy to notice too. So basically - any industrialized nation with some nuclear infrasctructure and access to uranium ore can make nukes, but everyone else will find out about this quickly.
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>>8720046
They have the "japan option"
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>>8720086
If you already have power reactors then you have plutonium (though production rate is small and extraction may intrude on reactor operation time)

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I know some of you guys believe in the Big Bang Theory. The theory, however, defies one of the most basic physics principles, the conversation of energy, that energy can not be created nor destroyed.

What started the Big Bang?
11 posts and 1 images submitted.
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It didn't create any energy, it accumulated energy in its core and blew up eventually.
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>>8720011
There was no "creation" of the universe. It has always existed and will always exist. However it's form may change wildly. To say there is a beginning or an end is to believe in magic.
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>>8720021
>>8720011

Nobody knows. Dont be tempted to give an answer.

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Would he land on his feet, or on his head because its the other side.
16 posts and 4 images submitted.
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He wouldn't make it out, he'd eventually settle at the core.
>>
>>8720000
well if there's no core then all the mass is gone and with it the gravity

so depending on initial he'd just float or come out the other end and keep going
>>
>>8720064
He wouldn't make it out, he'd eventually settle at the core.

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If you're so smart, why can't you read and play music.

It can get girls too.
16 posts and 1 images submitted.
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Because I don't want to
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>>8719817
I know a lot of intelligent people that also know how to play at least one instrument, in my case, I'm just not really into playing music

>It can get girls too
Just guitar
>>
>>8719824
>>8719827
>>8719834
Music theory isn't even that hard. It's simple physics.

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Ever since I had my brain surgery, (not sure if it is entirely dependent on what im about to say), my perception of reality seem to be foggy or disrupted. I no longer view the world the way I did a few years ago. Its almost as if im a robot that just drifts through time living what life he has. I feel like Im not me or rather I feel very disconnected with reality. I still do things like I used to and my personality is roughly the same.

Anyone else have this happen to them, does this having something to do with become mature?

P.S. This famous picture is somewhat inspiring to me. You will notice that god and the angels create the outline of a brain. My take on this painting is that our world and perception is entirely created with out brain. God being the all mighty entity that he is, could possibly just be a function of understanding relative to the brain

Im posting on more than a couple boards because I need answers. Thank you.
14 posts and 2 images submitted.
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Where did they operate? What was the procedure?
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>>8719784
They removed a benign glioma tumor the size of a quarter in the left frontal lobe. Relative to other brain surgeries this one was much lower risk since it was easy to get to and not malignant.
>>
Interesting. Take a bunch of psychoactive drugs. If they don't work, you'll know there is a problem with your brain chemistry. If you find yourself tripping balls, that would be a good time to do some contemplation on your issue. Psychotherapy works.

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Hey lads, Bio-fag here. I'm debating on what field to go into, since I need to begin investing in labwork.

Thinking cellular, but would like to see what people have to recommend and suggest
19 posts and 3 images submitted.
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>>8719655
Which side of R&D are you more interested in?
>>
>>8719723

Still not entirely sure. My problem is I have varied interests that don't really fall in one easy category.

I guess I find bio-engineering to be the main interest, but not sure what aspect to go with
>>
Molecular genetics is going to explode soon

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>having really hard time on hw problem
>ask TA
>he can't solve it either
>decide whatever it's only one problem and I have to turn it in now
>walk by professor's door, notice it's open and he's in there
>knock on doorframe, ask for help
>"okay"
>even stumps him for little
>while he's looking at it I suddenly wonder if this is even his office hours
"I'm sorry, are your office hours right now-"
>"no, no...I don't think so"
"I'm sorry-"
>"it's okay"
>suddenly feel really bad, like i'm intruding, but his door was open
>he's figures out the trick to the problem
>I apologize again for interrupting him
>he assures me it's fine, says he learned something too from the problem as it took him some time

was I a dick for barging in randomly and immediately asking for help?
14 posts and 2 images submitted.
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>>8719615
not at all, open doors belong to social people. As long as you polite and he agreed you're good. These people are there to serve you, take advantage of them but don't be rude about it. You offered him an interesting distraction and for all you know it gave him a research interest or idea.
>>
>>8719615
Probably not, in my experience your professors what to help you. If he was busy I'm sure he would have said so when you first asked for help.
>>
It's a Schroedingers Cat kind of situation, really.
You asked him if he could help you. He could've refused, but chose not to, so it's on him anyways.

Could you have been more considerate beforehand to look if it's his office hours or not?
Neeeh, maybe...

But at the end of the day what truly decides it, is how you carry yourself in this situation while coming at the man with a request. You did well, apparently.

And ultimately it would be him that gets to decide whether it was a dick move or not. So no way of telling until you try it. Therefore, Schroedinger.

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CS major here, why is stats so boring /sci/?

pic not related
14 posts and 2 images submitted.
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>>8719541
>define "1"
More like "Define 1, + and ="
>>
you could make the argument that 1+1=13,170.6422, in physics if you use the Saros number to represent 1, there is nothing say what the 1 represents so there is no way of proving that i am wrong.

BASIC MATH BTFO
>>
>>8719541
1 = 6, so 1 + 1 = 12

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I need a diagnosis. I don't really care about anything anymore, but thinking about it makes me want to jump out of my skin. It's as if I'm paralysed in a rapidly spinning cage.

It wouldn't be so bad if it weren't for the stomach pain, it feels like someone's stepping on me all the time.

What is this?

I made this thread on /r9k/ and they told me to come here.
24 posts and 5 images submitted.
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bump
>>
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another bump
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Your poor mental health has nothing to do with science.

K i l l
Y o u r
S e l f

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Are there any credible scientific articles out there that show the difference between whites and blacks in terms of genetics?

I found pic related not long ago, and when I went to check the first statement and its linked article,

"The FST between Whites (British) and Blacks (Bantu) is 0.23:
www.genetics.org/content/105/3/767.abstract",

I didn’t see any mention of any particular race. The article is above my level of comprehension though.

I didn’t check the other sources in the pic, because this first one is the core statement in the OP’s point, and without it, his whole message he’s trying to convey is weak.
14 posts and 2 images submitted.
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Why the fuck does /sci/ is so fascinated with this "oh but it is genetics" thing? Are you searching for a excuse for just being racists and assholes?
>>
>>8719289

Because this aspect is completely stifled in academia and taboo, and this is a counter cultural website where those kinds of things thrive in the domain of totally free, anonymous speech.
>>
>>8719289
is it wrong to be interested in this topic?

I don’t think being interested in it makes me a racist if I don’t use it for racist purposes.

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http://science.sciencemag.org/content/355/6328/950
>The method allows them to pack 215 petabytes of data on a single gram of DNA

So what would happen ifl someone encodes the common virus with pedo porn? Could anyone who catches the cold be arrested?
11 posts and 3 images submitted.
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>So what would happen ifl someone encodes the common virus with pedo porn?

A virus changes every time it copies itself. I'm sure storing info would be one off read-write shit.
>>
>>8719185
So if I download some pedo porn to my computer and change a couple of bits of data, it's not kiddy porn any more?
>>
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>>8719237
You could write out a mathematical formula to change this image into child porn.


Actually, if you would write a program that would generate a picture of a 500x500 pixel image with every possible pixel combination (e.g. brute force style)
It would output the faces of every human that ever exist or will ever exist. But also your parents having sex, or you being at the receiving end of a bukake.

huh, that really activates those neurons.

I wanna brush up physics since I always was fascinated by the subject, but sucked at it at school. I stumbled on pic related. What's /sci/'s take; is it any good?
14 posts and 1 images submitted.
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>>8718937
That cover looks like the cover of a fucking kid's book. Find a book fit for a man for fucks sake.
>>
>>8718937
Feynmann's lecture are a good start for physic in general
>>
https://www.youtube.com/watch?v=fV9ajE8c4TI&feature=youtu.be


Bad book from a libtard idiot.

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>Study computer science 5 years
>Take some Machine Learning courses
>Get headhunted as Data Scientist
>50k Euro starting

Why haven't you joined the Comp. Sci. master race yet /sci/?
32 posts and 3 images submitted.
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What about computer engineering
>>
>>8718884
its to hard
>>
>>8718884

Have fun programming a generic Java/.NET application.

Guys I think I'm fucked. I switched out of finance last semester because I wanted to go into physics, but I have to take pre-calculus to be caught up with the required math and I keep fucking up the exams, am I screwed?
18 posts and 3 images submitted.
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What is your IQ?
>>
>>8718875
>Precalculus
Are you in fucking middle school? This website is 18+, brainlet.
>>
>>8718875
top fucking kek

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If you're all so smart, why haven't you established a theory of everything yet?
24 posts and 5 images submitted.
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I have.
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>>8718651
Same
>>
Science is like wikileaks, drip drip drip works best

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