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/sci/ Science & Math

Threads added between 2014/10/15 and 2014/10/22

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Most viewed threads in this category

3 more posts in this thread. [Missing image file: ]
How does one solve the ODE: yy''-3y'^2=0 It says to use reduction of order but I am totally lost as to how to do that
16 more posts in this thread. [Missing image file: ]
so what exactly made doge such a good domesticated animal? sure, it can alarm you, help in hunting, be a pet and do simple controlling of other domesticated animals, but why were wolves domesticated first? was it just the pack mentality and omnivority? why not wild pigs, why not monkeys, why not hyena, some fox or moderately sized feline? or badger, for fuck's sake.
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If the top 20% of alpha boys fuck the vast majority of girls... why betas haven't been outbreed by alphas yet?
27 more posts in this thread. [Missing image file: ]
The only reason we try to understand the universe and look for answers is that instinctively it makes us feel good to do so, that we feel emotionally rewarded when we finally understand something or find an answer. How does it make you feel that science, what some of you may be dedicating your life to, is just a way for your human self to satisfy your instinctive needs, and that there is no more to it than that? If it didn't feel good to understand and look for answers, we wouldn't be doing it at all. I used to make it a life goal to try and answer big questions, how does life arise, are we alone in the universe, what is dark matter, but I came to the realization that the only fucking reason I want to find an answer to these questions is that it would make me feel good, and that is quite depressing because then there is no more justification to do science and try to understand the universe than to masturbate watching porn.

Is Economics Godtier?

32 more posts in this thread. [Missing image file: ]
Sup bros, I'm currently in an honours program for economics. Many people don't realize that economics is a lot of math. In fact I didnt know this until i specialized. Ever since I started my module, it has been pure math, and at a research level, it will remain pure math. What do you guys think of Economics? Is it up there with Physics, seen as its essentially pure applied mathematics?
5 more posts in this thread. [Missing image file: ]
Hi /sci, not usually on here but have been wonder about something I think you might be able to help me with. After spending a lot of time on /b I could not help but to be exposed to the racial "debates", and recently it got me thinking. If our white skin is needed to absorb sufficient amounts of uv light for D-vitamin production then this is my reasoning. If only 100grams of fat fish you will get 127% of daily recommended dose of vitamin D and darker skin allowes some absorbtion of Uv light AND the body can store it in the liver and fat of your body for use in the winter when you dont get enough sunlight. Does it not make sense that white skin would evolve much later than what I and probably you have learned, In school I was taught it started evolving as early as 35-40,000 years ago. But since hunter gatherers ate plenty of fat fish, nuts and meat why would it be so necessary to evolve it? The only time I can image it became a matter of life and death was when agriculture evolved in europe, 7000 years ago, since wheat and domestic animals like pigs dont have much D vitamin to talk about. Which I think is one of the reasons people started drinking milk but thats besides the point. I mean these hunters had to consume far more than 2000Kcal since they froze at night perhaps and/or hunted all day etc etc. far more than 2000Kcal or they would starve, so that would be atleast 2000kcal of something, and fat is an easy source or energy, which is where you find vitamin D. Even is they starved in periods they would have vitamin D stored in the fat they put on when they had plenty of food. No need for such a drastic mutation of take root. Am I completely out there or can it be that we are less than 7000 years old? Either way I had fun thinking about it.
6 more posts in this thread. [Missing image file: ]
Is this article accurate, /sci/? http://m.livescience.com/10569-human-lifespans-constant-2-000-years.html Can anyone substantiate or refute it? I do not care whether the thesis is proven or disproven. I would just like to know whether this thesis has any merit based upon currently available data. Thanks, in advance, to anyone who can help.

post results itt

25 more posts in this thread. [Missing image file: ]
34.9 here.
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>by 2100 CO2 levels will cause the global oceans to become 150% more acidic >This will cause 2/3+ of all marine organisms to die How will we cope?

Is Perelman underrated or overrated?

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Is Perelman underrated or overrated? Is he as smart as the media says he is? And why does he live with his mom? Autism?
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So I walk into my Physics class and my teacher has this up on the board. She and three beta Asians have no idea how this works. The blocks are exerting opposing forces on the spring scale represented by the line. Green text is the force displayed on the spring scale. Why does this make sense?

I've been wondering about this

1 more posts in this thread. [Missing image file: ]
Is there proof of the space-time invariance of the law of physics? is there evidence against it? I guess this is a question mainly for astronomers

Question

7 more posts in this thread. [Missing image file: ]
If every part in a car is replaced, every single part, would be it the same car.
3 more posts in this thread. [Missing image file: ]
Anybody with a PhD here? I'm strongly considering going into research (physics/math undergrad right now) and was curious to hear any experiences you guys might have had.

Why do certain highly intelligent minds with promising careers turn to crime?

10 more posts in this thread. [Missing image file: ]
Why do certain highly intelligent minds with promising careers turn to crime? E.g.: Theodore Streleski Ted Kaczynski James Holmes were all highly intelligent and promising people that turned to crime.
9 more posts in this thread. [Missing image file: ]
Let's have a masterrace book thread. Name a better book(on the same field of study of course) than Spivak's. Terence Tao's analysis books are pretty solid too, even though they're not so famous.
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Chemistry questions. 1. What state of matter is best for atomic joining? 2. Does electricity or magnetism have any affect on the probability of atomic joining? >inb4 this is not the hw board It's not homework, and I'm unclear on whether experiments count as "hw" or not. Naturally I can't disclose the specifics of the experiment (its never been done that I know of), but I need to know answers to these questions before I can even try it.
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If f(v) is 1/v2+5 and G(v) is ?(v+4) how do you find g°f? please provide steps.
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nailed it
9 more posts in this thread. [Missing image file: ]
Is high intelligence a defect or the pinnacle of evolution?






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