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/sci/ Science & Math

Threads added between 2013/06/26 and 2013/07/03

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Most viewed threads in this category

Mad science thread

8 more posts in this thread. [Missing image file: America Question.png]
Is it possible to create a superhuman by granting the brain more control over involuntary functions/absolute control over someone's emotions? Since a person's body temperature is controlled by the mind it would allow people to survive in very hot or cold environments. If someone had the ability to turn pain on and off then they would become a far stronger physical combatant. If someone had more control over their emotions then a shitload of things are possible.

Electron beam

17 more posts in this thread. [Missing image file: EB.jpg]
Hey, /sci/, it's /k/ We have some questions. What are electron beams? What do they do on a cellular level? How are they made? How might they be made in, say, a well stocked apartment or home? All I know is that TVs use an unfocused version of them and that they can blow shit up. I'm counting on you, /sci/ Pic semi related
6 more posts in this thread. [Missing image file: 1365294652644.png]
what is your favourite fundamental, universal force? mine is friction, it's amazing that little imperfections on the surface of an object can cause it to heat up.
7 more posts in this thread. [Missing image file: stupid shit with kites.png]
can you stack kites on kites ( kite line) to lift kite 1 really far up? like when would this fail? atmospheric pressure would be a problem but with advances in material science is there material that would get the job done? would it just end up being a kite graveyard at a certain point? tldr: why is this a stupid idea- my friend is convinced it'll work.
10 more posts in this thread. [Missing image file: Noonewilleverfindthebody.png]
Hey, /sci/. I thought I'd ask for some help in understanding what the ? symbol is, and it's exact function. Thanks. Example in the picture.
4 more posts in this thread. [Missing image file: image.jpg]
hey /sci/ I was wondering, if you were to cut off an erected penis, what happens to it? I know the blood will stream out and it will go unerected. But hypotheticaly, what if you were to cut it off with for example a lightsaber. The wound would be burnt so the blood woudn't come out. I know it probably won't but I was wondering why. also sorry if this isn't really the best board for this question but it seemed the best place to ask to get a serious awnser
0 more posts in this thread. [Missing image file: thermo1f.gif]
According to the first law of thermodynamics, energy cannot be created or destroyed. If that is true, then where did the "first" available energy come from? If this law applies to any form of energy, then the first form of energy had to come from somewhere. If it could not be created, according to the law, then how did it come to existence?
19 more posts in this thread. [Missing image file: neuroscience (1).jpg]
I'm a neuroscientist. Ask me anything.
4 more posts in this thread. [Missing image file: image.jpg]
Hey guys, do you think you can handle this problem? i dont think i can, because i don't know/don't remember the mathematical technique that i should use. "? teachers need to correct all the ? tests from their ? classes. Destribute all the classes between all the teacher in a way that they all stay as close as possible to the mean of tests per teacher (?\?). The hard part is, two teacher cannot share the same class! so each class that is given to a teacher must be corrected only by himself. Also, the number of tests is not equal to all classes. you have the amout of tests in each class. (use whatever variable you want for n classes) i dont know if i expressed myself correctly, so i'll give an example. 5(?) teachers, have to correct a total of 400(?) tests from 4(?) classes. ?1 (number of tests in class 1) = 70 ?2 (number of tests in class 2) =130 ?3 (number of tests in class 3) = 150 ?4 (number of tests in class 4) = 50 In this case, the solution where everyone is as close to the mean as possible, is to give the tests of each class to a different teacher and leave one teacher without any tests (since they cannot share a pack of tests)
4 more posts in this thread. [Missing image file: Hector Salamanca.jpg]
Does anyone hate poorly worded/ambiguous problems as much as I do? So I'm working on some physics homework, just mechanics stuff, no big deal, and we're doing friction. I'm given a problem where a mass travels whatever distance down an incline, right? But... how the fuck is that distance being measured? Is it the path length? Is it the actual distance traveled? Did the mass descend that far? I don't know, and it's fucking infuriating. This problem should be pretty much trivial, but NOPE, it's poorly worded and I would have to do it three times to guarantee I get credit for it. This is bullshit, I quit.
83 more posts in this thread. [Missing image file: 375px-Cognitive_Science_Hexagon.svg.png]
ask a 5th semester cognitive science student anything
27 more posts in this thread. [Missing image file: 293048249032402.jpg]
Say you were in a spaceship and were instantly transported to another section of space somewhere in the universe (e.g. through a wormhole or w/e). How far would you have to be from earth in order that you would have no idea where you are, if your ship carried a copy of all astronomical knowledge known to mankind and was outfitted with radio telescopes (etc.) equivalent to the most advanced that currently exist?


14 more posts in this thread. [Missing image file: 800px-Schrodinger_Equation.png]
Whose gonna help me decipher shrodingers equation?
14 more posts in this thread. [Missing image file: kirknou.jpg]
You... cannot... into space!
3 more posts in this thread. [Missing image file: EM.png]
Trying to self-study basic (first undergrad class) electricity and magnetism for next semester, up through what's covered in Knight if that means anything to anyone. These two books are cheap and recommended on Amazon, which do you guys think would be more helpful?
0 more posts in this thread. [Missing image file: cochlear implant.jpg]
You probably saw this on the news a few weeks back; deaf kid gets a cochlear nerve implant because he was born without a cochlear nerve. they just send a trickle of current from a microphone right to his brain stem. I read about the 1st ones in Stars & Stripes magazine when they were done on military personnel who had been deafened by explosives. The guy interviewed said "It does not sound like talking; it's like a constant buzz but the buzz changes when people talk." The neurologist speculated that his brain would take sometime to learn to interpret the signal it was getting. Younger brains are so much more plastic that the little kid will probably get a lot more out of his than a grown man could. Question: does this mean we are close to a Google glass that is permanent? Could we implant a visual input? Might be nice to have 3 eyes, one always online.
5 more posts in this thread. [Missing image file: tumblr_m2kxfj9fZv1qd3x7jo6_1280.gif]
http://www.ncbi.nlm.nih.gov/pubmed/18621098 >We have used a chronic unpredictable mild stress (CMS) as a rat model of depression. CMS (5 weeks treatment) produced anedonia and increased corticosterone levels. These effects were accompanied by a detectable increase in caspase-3 positive neurons in the cerebral cortex, suggesting apoptosis. How do you deal with stress /sci/?
2 more posts in this thread. [Missing image file: sqp.jpg]
Putnam/Olympiad-how do I prepare? Also, polyester or any other cloth have impact on intelligence?
0 more posts in this thread. [Missing image file: It's nothing.jpg]
Higgs particle.
5 more posts in this thread. [Missing image file: eyjafjallajokull-lava_drive_in.jpg]
How do I get a summer job in a geology related industry after the 1st year of engineering that I'm going into right now?

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