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/sci/ Science & Math

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Most viewed threads in this category

1 more posts in this thread. [Missing image file: 1354479530315.jpg]
How do double bonds affect the polarity of a molecule? I know if the outer shell of an atom is filled by the double pond, polarity decreases because an otherwise lone pair of electrons is shared. However in [SiO3] -2, would the oxygen with the double bond have more pull going towards it, thus making it polar?
5 more posts in this thread. [Missing image file: Koala.jpg]
Hey /sci/, help me out. My textbook says the Lewis structure of CH2NH2 is: CH2 -- NH2 (lone pair on N) <--> CH2 == NH2 How is this right? Why is it a resonance structure when in the first one, carbon doesn't even have an octet? Shouldn't it only be the one with the double bond?
1 more posts in this thread. [Missing image file: TLAxevv.jpg]
Was 4chan named after the Fortran programming language used in the first assembly IBM computers?
0 more posts in this thread. [Missing image file: 1377718893640.jpg]
so you guys are supposed to be smart How many n can you get back and still score above 75% >pics or it didn't happen http://www.soakyourhead.com/dual-n-back.aspx

Fuck Graham's Number

0 more posts in this thread. [Missing image file: eternity_kanji.jpg]
G = g(64) = g(g(63)) = g(g(g(62))) = ... That's tiny. Ridiculously small. After all, you could propose Hypergraham's Number based on it: H = g(G) And that's how you spend infinity... first counting out Graham's Number, and while doing so, calculating out Hypergraham's Number. Then when you're done, and the universe is long lost to dark energy as if it never existed, then your proctor comes over, and spends the exact same amount of time checking your work... while he assigns you a new task, the Blottograham's Number: B = g(H) It's ETERNITY, folks. Gotta fill it!

Antares Cygnus Launch In 1 Hour

26 more posts in this thread. [Missing image file: 2013-0001 (Antares Cygnus).jpg]
>no Antares/Cygnus thread on first five pages What are you even doing, /sci/? http://www.space.com/17933-nasa-television-webcasts-live-space-tv.html
17 more posts in this thread. [Missing image file: giants.jpg]
Theoretically, If giants existed, would they have big penises or would their penises be as big as normal sized, human penises? I'm curious because if their penises were larger, wouldn't more blood need to flow into their penises in order to erect it? How shallow would giant vaginas be to accommodate their penises?
40 more posts in this thread. [Missing image file: majors-earnings.jpg]
Why aren't you a petroleum engineer /sci/?
5 more posts in this thread. [Missing image file: 1.jpg]
I fucking hate this place. > Studying probabilities and statistics like a cunt for a month or so. Now I start not having much more to study and getting bored about it and now the cunts start having a strike so it may go way beyond the due date. I may have to keep studying the shit just for the sake of not forgetting what I know.
10 more posts in this thread. [Missing image file: image.jpg]
Dear /sci/, How do we fix psychology? It certainly has some interesting and useful areas, but it seems to have become an Affirmative Action degree. Cognitive psychology is really interesting, but not really sure if it is very useful. Sports psychology seems like it may be effective when implemented properly-Russia I'm guessing does it proper as with all sport related science. Social Psychology and "counseling/psy d" really seem to be where the Affirmative Action comes into play and is as such an entirely useless field. Despite it's uselessness, it seems to be BY FAR the most popular area of pyschology. Another interesting area is Industrial/Organizational/Personal psychology which seems to be rather useful. It is essentially a legitimate version of Human Resources (HR being the Affirmative Action version of I/O psychology) Do we just jump ship and invent a new name for psychology that would not attract women? I'm thinking something very long and German sounding (like my penis).
15 more posts in this thread. [Missing image file: 1335139562114.jpg]
Niggers are objectively the dumbest race, reasons and excuses unrelated to their genetics you want, but they are after all. Discuss.
0 more posts in this thread. [Missing image file: hi.jpg]
Hi guys. I'm struggling a bit while trying to construct some operations for a binary finite field. I've constructed a linear map for u --> u^2 (u belongs to the finite field of course) for the binary finite field with modulo x^4 + x + 1. Is there an easy way to get u --> sqrt(u). Would an inverse matrix do it? I started the calculation but the result was looking pretty horrific so I decided to ask if there was a nicer solution.
3 more posts in this thread. [Missing image file: an-odd-balance-puzzler.jpg]
You have a balance beam, the kind of scale that tips from one side to the other, depending on the weight on each side. On each side is a beaker, half-filled with water. The sides are in balance. Now, on the left side, you submerge a ping-pong ball suspended by a string. On the right side, you submerge a steel ball of the same volume as the ping-pong ball suspended from a crane. Does the balance beam tip to the right, to the left, or does it remain unchanged?

Antidepressants and conscience

4 more posts in this thread. [Missing image file: antidepressant_medications_sign.jpg]
Can antidepressants affect your conscience? Like, would they affect it in such a way that you would do things you would have never done before taking them? Examples would be stealing, cheating, lying, etc? I have googled it but could not really find any scientiic articles regarding this subject and I only found a few forum discussions where people were wondering if their partner had cheated on them because of antidepressants.
0 more posts in this thread. [Missing image file: image.jpg]
Alright, I'm having trouble with Calculus I (super-pleb here). If any of you poorfag /sci/entists would like to make a quick $10, you can email me and help me out. All i need is to concieve an understanding of a few examples of limits and the methods used to get to the answer. You will only be paid (via paypal) if you actually help me, if you want 10 bux just email me inb4lock@hotmail.com


2 more posts in this thread. [Missing image file: untitled.jpg]
Hi dear /sci/. I study electrical engineering and till now math has been pretty mechanical to me ( you know plug and calculate way). Problem was that in high school, middle, elementary it was always plug and chug approach and I would solved math without big problems even in my college. I was pretty lazy before college and I do have some holes in basic math ( it is not like I do not know how to solve fractions or anything like that, but I do have some holes) . Not long time ago I found this guy http://betterexplained.com/ and it way like blind man first time seeing world around it. I hate things which I can not explain to me in simple language but this guy is a pro in explaining a lot of things in easy way and I fell in love with math. OK what is my question? Is it possible to explain everything in such easy and intuitive way? What book would you recommend for covering my math basics?
0 more posts in this thread. [Missing image file: untitled.png]
it's HAPPENING!!! Google is curing death http://business.time.com/2013/09/18/google-extend-human-life/


1 more posts in this thread. [Missing image file: plant_tissue_culture_jars.jpg]
I'm starting my bachelor thesis and have an important question. My thesis is about the influence of some fungi on the growth of apple in plant tissue culture (pic related). I'm going to measure the growth with image analysis software. But my question now: How can I statisticaly calculate the number of replicates I have to do in order to get a statisticaly significant result? I have no idea how high my variance and what so ever might be. And yes....my prof is on vacation.
4 more posts in this thread. [Missing image file: ha.jpg]
Working on a symbolic problem dealing with translational kinematics in 1 dimension. Not sure I've done it right. "At time t=0, a student throws a set of keys vertically upward to her sorority sister, who is in a window at distance h above. The second student catches the keys at time t. With what initial velocity were the keys thrown? What was the velocity of the keys just before they were caught?" Being thrown straight up, the keys are affected by gravity, so we can use a particle under constant acceleration model to analyze this. x(f) = x(i) + 1/2( V(i) + V(f) ) * t where x(f) is the the final position, x(i) is the initial position, V(i) is the initial velocity, V(f) is the final velocity and t is the time. h = 1/2( V(i) + V(f) ) * t, 2h/t = V(i) + V(f), V(i) = 2h/t - V(f), V(f) = 2h/t - V(i). V(i) = ( 2h/t - V(i) ) - a*t, 2*V(i) = 2h/t - 9.8m/s^2 * t, V(i) = h/t - 4.9m/s^2 * t, Which is the answer to the first question. For second question, V(f) = 2h/t - (h/t - 4.9m/s^2 * t) V(f) = h/t + 4.9m/s^2 * t That's the anwers I've arrived at. Any way I could refine these answers? Or have I made a mistake?
3 more posts in this thread. [Missing image file: Koala.jpg]
Just curious to know how does the UK's education system from ages 16-18 compare with other countries especially in terms of science and maths. I've heard it's one of the best public education systems available but that's really hard to believe because of the lack of hours in school. Also, how was your educational experience in your country?

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