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/sci/ Science & Math

Threads added between 2013/11/20 and 2013/11/27

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Most viewed threads in this category

9 more posts in this thread. [Missing image file: 1292137809179.png]
This is the chemical formula for love: C8H11NO2+C10H12N2O+C43H66N12O12S2 dopamine, seratonin, oxytocin. It can be easily manufactured in a lab, but overdosing on any of them can cause schizophrenia, extreme paranoia, and insanity. Let that sink in.

Microbiology

6 more posts in this thread. [Missing image file: image.jpg]
What's the difference between 1. the ability to infect certain organs and tissues And 2. the ability of microorganisms to cause diseases? Maybe that the infection of organs and tissue doesn't necessarily have to result in a disease? Thanks in advance!
5 more posts in this thread. [Missing image file: 1374237524230.png]
What do you think about cognitive science? Is it a real science? Shouldn't people who want to study the human brain become involved with neuroscience instead?
8 more posts in this thread. [Missing image file: 1384852680059.gif]
How much math that you learned in High School is actually used in an average, everyday job?
1 more posts in this thread. [Missing image file: IMG_20131110_214713.jpg]
>tfw finally gonna take calc 1 >mfw I had to take algebra, trigonometry, and pre-calculus because I was placed in algebra after being a NEET for 2 years (currently in college) >mfw /sci/ makes me exited to take math What have you done to me? >also calculus thread, recomendations, warnings, etc
1 more posts in this thread. [Missing image file: search.png]
Sup sci, I challenge you to combine all 5Ws 1H question into one. You can't. Because you're a human.
2 more posts in this thread. [Missing image file: drawing.jpg]
What is the perfect method to choose 6 person out of >6 persons? One where cheating is impossible? Scenario: Suppose a University has 6 scholarship offers, but there are >6 persons who are qualified. So the university need to choose 6 of them.

Genetics

3 more posts in this thread. [Missing image file: boy-genius-scientist-24498757.jpg]
>Monoamine oxidase A gene (MAOA) predicts behavioral aggression following provocation. Research has found some genes that are linked to aggressive behavior and retaliation when provoked. Some ethnic groups have this gene more than others due to selection pressures. Do you think these findings have ramifications for genetic engineering and society? -- http://www.pnas.org/content/106/7/2118 http://journal.nzma.org.nz/journal/120-1250/2441/
43 more posts in this thread. [Missing image file: airplane.png]
Don't see a rule against it, so how about we bring up the greatest debate in physics history. Airplane on a treadmill. More specifically: Imagine a 747 is sitting on a conveyor belt, as wide and long as a runway. The conveyor belt is designed to exactly match the speed of the wheels, moving in the opposite direction. Can the plane take off?
3 more posts in this thread. [Missing image file: 1363557519105.jpg]
shameless homework thread, I know where i'm going wrong I just don't really know how to write it down showing how I did all chain rules. y=ln(tan^-1(3x)) find dy/dx So far I had dy/dx = dy/du . du/dx to get dy/dx = 1/(tan^-1(3x)(9x^2+1)) I know there should be a 3 on the top though, just struggling on how to lay it out in working
3 more posts in this thread. [Missing image file: Skyrmions.jpg]
Harnessing the power of skyrmions rdmag.com/news/2013/11/harnessing-power-skyrmions Yoshinori Tokura and colleagues from the RIKEN Center for Emergent Matter Science, in collaboration with a research team from the Univ. of Tokyo, have now shown structural control of small magnetic vortex structures called skyrmions Skyrmions are very stable magnetic structures that can form within a chiral crystal lattice. It will now be possible to consider practical schemes to design devices based on skyrmions. For example, skyrmions with the desired size and orientation can be created by tuning the composition of the magnet. “The next stage of our research will focus on the manipulation of skyrmions." >Skyrmions in a manganese–iron–germanium magnet. Arrows represent the magnetic fields that make up each skyrmion. The size of the skyrmions changes gradually as the composition varies, and the chirality or ‘handedness’ of the skyrmions changes with the chirality of the crystal lattice.

Homework

26 more posts in this thread. [Missing image file: 1370135106128.gif]
i need some help with an equation, 4p^2-12p=22 i know its probably really easy but can somebody solve for p? pic unrelated
7 more posts in this thread. [Missing image file: spock is a nigger.jpg]
Hello /sci/ (shouldn't it be /scim/ or /scm/? what about the math?) I have a logic question for you. Am I correct in assuming the question ~~A>B ~B /~A is invalid?
1 more posts in this thread. [Missing image file: 3772501+_28949ed8b274371f(...).png]
There were wonderful scientists who passed away several decades ago. If they could be effective in what they did without reading any of the studies or other articles that have been published in the last several decades, there's no need for me to read any of those works in order to be effective.
4 more posts in this thread. [Missing image file: circuit.png]
Who here knows their CS? make a circuit with 7 inputs and an output that is 0 if an even number of inputs are 1 and 1 if an odd number of inputs are 1
3 more posts in this thread. [Missing image file: 1383369717869.gif]
Can you obtain super-cold water by putting rapidly stirred water in far below freezing temperatures? Or does the stirring create a lower freezing point because you're adding energy, but still eventually freeze?
9 more posts in this thread. [Missing image file: power-button.jpg]
Hello /sci/ I was wondering if you had some time to explain to me if and why nuclear reactors are the superior choice for powering countries, and what the negatives are. If you don't agree, then what do you think is our best choice. I want a discussion on the advantages and disadvantages of fossil, renewable and nuclear power.
90 more posts in this thread. [Missing image file: 1384008791085.jpg]
I. If a proposition, P, is meaningful, then it denotes something. II. If P denotes something, then it refers to some object in the world. III. If P refers to some object in the world, then if to say "the referent of P does not exist" is meaningful, we have a contradiction. IV. If the referent of P does not exist, it exists. V. We cannot speak of non-existence meaningfully. QED

brain aging

5 more posts in this thread. [Missing image file: brain-study.jpg]
I turned 22 4 days ago. When will I start getting dumber? I read intelligence peaks at 21, or at least the kind that lets you solve scientific problems. I have 3.5 years of engineering left. I can't think of a better board for this neuroscience question.
3 more posts in this thread. [Missing image file: Perelman,_Grigori_(1966).jpg]
Hey. I'm gonna go ahead and guess that you guys discuss this sorta thing all the time, but I would still like to discuss it. Who are your GOATs of the Sciences? Whether it be the obvious ones like Aristotle or Euler, just explain to me in your own words why they were so important. I find these kinds of things to be more interesting when I can put a human face behind it. Euler and his number... Aristotle and all the shit he did. It makes it resonate more. Anyway, give me your idols. My particular hard on is for a more modern mathematician: In November 2002, Perelman posted the first of a series of eprints to the arXiv, in which he claimed to have outlined a proof of the geometrization conjecture, of which the Poincaré conjecture is a particular case. Well he proved whatever he was trying to prove and then this badass refused the Fields Medal.






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