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/sci/ Science & Math

Threads added between 2013/07/10 and 2013/07/17

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Most viewed threads in this category

10 more posts in this thread. [Missing image file: dick.jpg]
I remember there being a torrent with ebooks in it about science, psychics, space and whatnot. I checked the sticky, couldnt find it back. It was sorta like the gentoomen library, but more /sci/-ish Anyone knows where I can find it? Thanks. Pic is unrelated, ofcourse.
4 more posts in this thread. [Missing image file: 53569.original[1].jpg]
>spent most of my life using a keyboard >dat feel when I can't write down three lines without either a copying error or a basic arithmetic mistake seriously, this shit is ridiculous. how do I get good at doing simple math on paper fast with no mistakes?

Finding young girls attractive reason

4 more posts in this thread. [Missing image file: Tsutsukakushi Tsukiko13.jpg]
Hello /sci/ Don't come here often, but what is the scientific reason for men liking young girls. I don't think I'm a paedo, but I still find young girls very attractive. Their innocent faces, petite bodies, tight openings, would feel so much better than any women at my age. I find them more attractive than women our age as well, I'm sure it's normal, but obviously resist our urges, and just try to avoid staring for too long. But in a way it's their own fault sometimes, why does a little kid need those kind of erotics clothes, I sometimes think their parents want their little girl to seduce others. So yeah, my question is what is it scientifically or evolutionary wise that makes little girls so sexy and wanting to just do it with them. P.s. I do watch a lot of anime, so I guess that does play some factor on real life girls. But even before I started watching these years ago, I'm sure those kids were just as doable then.
5 more posts in this thread. [Missing image file: tetsu.jpg]
Quick question. If you multiply two invertible matrices, is the resulting matrix nessecarily invertible as well?
1 more posts in this thread. [Missing image file: MThc28P.jpg]
We know that how fast you travel relative to the speed of light, time either slows or speeds up, so what about this? We also know that photons are massless, so what if the reason they're massless is because they only exist on a certain amount of dimensions; and their ability to interact with our four (nine?) dimensional existence is because of the energy they contain, shining across objects by stacking their energy neatly across our plane.
34 more posts in this thread. [Missing image file: Notitle.png]
Is anyone good at probability??
39 more posts in this thread. [Missing image file: psi71543449.jpg]
I just got this tattooed on my left pec in black. What do you think /sci/? I'm an inorganic chemist and I want to research room temperature super-conductors. Wavefunctions are fucking awesome so I figured I'd get the symbol for a wavefunction.
84 more posts in this thread. [Missing image file: the-eye-of-silence-1943[1].jpg]
Mathematics >>>>>>>>>>>>>>>>>>> Physics >> Chemistry >>>> Biology >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Engineering So we can all agree with this list ranking the level of sophistication and cleverness each field's arguments possess , right?
27 more posts in this thread. [Missing image file: 405px-Honourable_Bertrand_Russell.jpg]
Hello, great minds of /sci/. Are the following statements logically correct? Christianity is related to Judaism, because it is derived from Judaism. Because Christianity is a derivative of Judaism, Judaism is not related to Christianity,

Nootropics

9 more posts in this thread. [Missing image file: MS_subject_science_2CR.jpg]
I am here to give a report on Nootropics after being a personal Guinea pig, simply because I said I would and several people were interested at the time. AdderRx: Made me feel paranoid, heart racing, couldn't sit still, mind racing, can't concentrate... however it was extremely effective at combating insomnia. I stayed awake for two days. And I never felt tired taking it. ADRApro: Gave a short term boost to focus, seemed like a very very mild adderall, generally I don't think the effort of remembering to take it was worth it. EXCELEROL: At first I did not notice anything, and wasn't even thinking about it but after the second day, I noticed my scores on an online game I occasionally play "Wargame Airland Battle" had improved dramatically, I was now winning almost every match, my decisions were quick, I no longer sat there in a stupor at what to do but made choices quickly and decisively. I was now playing on the highest level with the best player of the game. I noticed also that my reading comprehension was improved, I remember more of what I was reading and understood it's contents better. I decided to re-read the first half of GEB, and the material did not seem as distant as it had before, I also decide to re-read the 48 laws of power, and now the book material seemed childish to me, like the book was written for someone beneath me, where before I was impressed by it. The most dramatic effect are my dreams, I now remember my entire dream sequence from start to finish, and I have been having some highly creative dreams with some very unique and original ideas generated while dreaming. At the pace this is going it feels like I may actually dream up something useful and applicable to the real world. I may not try the rest of the Nootropics and stick with this.
5 more posts in this thread. [Missing image file: NFMnOb2.jpg]
>2013 >Computer smart as a 4-year-old >http://phys.org/news/2013-07-smart-year-old.html Does any /sci/ know in reality that anyone actually reads and trusts these news like these? I can imagine young people or those who lack scientific knowledge would trust something like that. I can't imagine what kind of mental damage would cause on them.
3 more posts in this thread. [Missing image file: milestones_en.png]
Why do most entertainment mediums depict immortality as somehow bad for the humanity? Like for example a recent movie, In Time, a guy in that film said that he's been living enough and wants to die even though he had the body of a 25 year old. Why is it such an opposed idea to extend humanity's life span into eternity?
6 more posts in this thread. [Missing image file: images.jpg]
I want all my pcs to be in the same network. There are two branches connected to the router. How do I keep the router happy as it wants to create two separate networks ?

How to be good at Math ?

2 more posts in this thread. [Missing image file: Frans_Hals_-_Portret_van_René_Descartes.jpg]
I wasn't good at math when i was young, now i want to be good at it. What do i have to read or to do so i can be good at Math.
8 more posts in this thread. [Missing image file: flowchart.jpg]
Could you conduct math just with flowcharts? Is it a viable method to learn math? Besides that flowcharts general I suppose.
11 more posts in this thread. [Missing image file: Untitled.png]
Hello /sci/, I'm studying for an exam in complex analysis and pic related is one of the tasks from last year's exam. The whole thing reads as follows: "Let f be a holomorphic function such that (pic related), where C1 is the complex unit circle in mathematically positive orientation. Determine f such that, in addition to the conditions above, f(0)=1 and f'(0)=2." I don't get it, I can see that it's basically the cauchy integral formula, but the only function I can think of that would make sense here is 1/(sqrt(pi*i))*sin^2(z), but that doesn't fulfill the last 2 conditions obviously. So how are you supposed to make those work with the rest of the task? I thought in the integral formula, f(z) had to be in the enumerator, so that would only leave multiples of sin^2(z)? Is there something I'm missing? Can we just add constants and a c*z function because the circular integral around the unit circle will evaluate to zero anyway? If so, that would make things very easy, but I'm not exactly sure that's allowed..
0 more posts in this thread. [Missing image file: image002.png]
what is the hierarchy of affect affectors?

Physics Class presentation

1 more posts in this thread. [Missing image file: mlfw3758-1332112891827.gif]
http://www.youtube.com/watch?v=KFkoe92kii0&t=0m50s You walk into physics class and see dis hur. What do /sci/? SMH
8 more posts in this thread. [Missing image file: protip[1].jpg]
ITT, let's talk about homework help on /sci/: In a word: DON'T ASK FOR IT. 1. people on /sci/ are mostly assholes and don't want to help you. they are, however, very willing to waste your time and also insult your intelligence. 2. people on /sci/ are also actually quite bad at whatever you're doing. no, seriously. even high school algebra. 3. the very few people who are both capable and willing to help are quite likely to demand that you 'show the work you've done so far'. the problem with this is that you will spend a shitton of time typing it out, shitton of time back-and-forthing, and more time being trolled and quibbled about grammar. After all that it is very likely you won't get help anyway, because 4chan has the attention span of a goldfish. 4. just google. seriously. if you type the exact question into google, it's likely you'll find a concise, comprehensive and accurate answer. this is because plagiarism is only punished when you're a student. when you're writing homework questions it's called 'not reinventing the wheel'.
7 more posts in this thread. [Missing image file: 1361361844105.png]
Are there any games online for practicing multiplication, division, adding and subtracting. Also are there any which involve algebra? I ask because when solving difficult problems, it's often stupid mistakes that let me down.






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