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/sci/ Science & Math

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Most viewed threads in this category

12 more posts in this thread. [Missing image file: 45345365635.jpg]
Is there any /sci/ence behind eating your own scabs, boogers, or loose/dead skin? And possibly any long term health effects of doing so? Since as long as i can remember i have done everything mentioned above. I'll feel around the inside of my mouth with my tongue and then chew and swallow any loose pieces of skin. I like to bite off any dead skin around my fingers and chew on it for awhile. If i have a scab that's loose i'll pick it and eat it. I also dig around and eat my boogers. Sucks when you get a hair but i find the juicier the better... As gross as it is, i have always been curious about it.
60 more posts in this thread. [Missing image file: bulge.jpg]
Why are straight men sexually attracted to cocks but not to vaginas? What's the evolutionary explanation of this, /sci/?
8 more posts in this thread. [Missing image file: 1342060085948.jpg]
>moon landing conspiracy theorists
2 more posts in this thread. [Missing image file: 4a2.jpg]
2 more posts in this thread. [Missing image file: 1348418722471.jpg]
>noone noticed the >>5 \pi GET /sci/, I am disappoint
2 more posts in this thread. [Missing image file: HD4Za.jpg]
What's the difference between chitin and horn substance?
17 more posts in this thread. [Missing image file: integral issue.png]
can an someone help a brother out here quickly please?

Tesla's Direct Quote on the future of humanity

1 more posts in this thread. [Missing image file: 300px-Tesla32.jpg]
Long ago he recognized that all perceptible matter comes from a primary substance, or a tenuity beyond conception, filling all space, the Akasha or luminiferous ether, which is acted upon by the life-giving Prana or Creative Force, calling into existence, in never ending cycles, all things and phenomena. The primary substance, thrown into infinitesimal whirls of prodigious velocity, becomes gross matter; the force subsiding, the motion ceases and matter disappears, reverting to the primary substance. Can man control this grandest, most awe-inspiring of all processes in nature? Can he harness her inexhaustible energies to perform all their functions at his bidding? More still - cause them to operate simply by the force of his will? If he could do this, he would have powers almost unlimited and supernatural. At his command, with but a slight effort on his part, old worlds would disappear and new ones of his planning would spring into being. He could fix, solidify and preserve the ethereal shapes of his imagining, the fleeting visions of his dreams. He could express all the creations of his mind on any scale, in forms concrete and imperishable. He could alter the size of this planet, control its seasons, guide it along any path he might choose through the depths of the Universe. He could cause planets to collide and produce his suns and stars, his heat and light. He could originate and develop life in all its infinite forms. To create and to annihilate material substance, cause it to aggregate in forms according to his desire, would be the supreme manifestation of the power of Man's mind, his most complete triumph over the physical world, his crowning achievement, which would place him beside his Creator, make him fulfill his Ultimate Destiny.
6 more posts in this thread. [Missing image file: henri-cartan-extra_795574f.jpg]
Does anyone here have an ebook of Henri Cartan's Differential Calculus? I'm following his book on differential forms and it sometimes refers to results from his calculus book. This book, however, doesn't seem to be in print anywhere and it also seems to be pretty hard to find a pirated version of it too.

Millenium Prize Problems

0 more posts in this thread. [Missing image file: RiemannCriticalLine.png]
So /sci/, what's your favourite Millenium Prize Problem, and why is it your favourite? >P vs. NP >Because pooters I really got excited when IP = PSPACE was proved, but sadly that was proved unrelated to P =NP. For the clueless: http://en.wikipedia.org/wiki/Millennium_Prize_Problems
2 more posts in this thread. [Missing image file: Fry questioning.jpg]
Statistics question, I'm brain dead and nothing is coming back to me. Describe a strategy to randomly split 30 tomatoes into the three groups for a completely randomized single factor test of a fertilizer.
18 more posts in this thread. [Missing image file: 1354551172492.png]
Is it possible to make oxygenated water, just like carbonated water?
2 more posts in this thread. [Missing image file: wallpaper space earth.jpg]
Hey /sci/, I had a thought- Ignoring how it would occur and any forces used before this situation to make it happen, what would happen to the rotation of the earth if it were to suddenly have, say 0.25 of it's original mass? (the 0.75 taken out would come from the innards of the planet) Would the newly small mass moving at the same speed in orbit cause it to fling out of orbit, or be pulled into the sun? I desire to learn...
25 more posts in this thread. [Missing image file: fishmath.jpg]
Prove there are infinitely many primes of the form x^2 + 1.
2 more posts in this thread. [Missing image file: ilovememes.jpg]
Henry Squirrel was thirsty. He walked over to the river bank where his good friend Bill Bird was sitting. Henry slipped and fell in the river. Gravity drowned. The End
7 more posts in this thread. [Missing image file: Seinfeld Man.jpg]
If you took all the meanest animals and pit them in a series of 1v1's, which animal would likely come up the top contender? Some that come to mind for me would be the Brown Bear, Gorilla, Rhino, Elephants and a Hippo, but I'm sure you science dudes can think of some other cool shit. Obviously we bump into a bit of trouble when you try and compare a sea born creature to a land creature, so in those matchups just assume shallowish water. >Humans don't count
13 more posts in this thread. [Missing image file: euler.jpg]
So I'm browsing 4chan like usual but suddenly there's this retard thinking that >e^-1*3.14/10 is a use of the exponential function. I argue I didn't define any domain, codomain or even an application. So In my view I simply used the e constant in an arithmetical expression. He thinks I used the defined exponential function. Who's right? /tv/res/27859395#p27862218
10 more posts in this thread. [Missing image file: Derivadas y Limites.gif]
Does anyone have a clean, sleek, nice looking table of derivatives that I can print?
24 more posts in this thread. [Missing image file: 89l;.gif]
I don't have insurance so I don't know how soon I can see a doctor. How can I tell the difference between a collapsed lung and COPD? Does anyone here know? Any medfags?

Find the nth derivative of the function f(x)+x^n/(1-x)

4 more posts in this thread. [Missing image file: cover.jpg]
I got a recursive answer, which isn't satisfactory, and a closed form(?) which involves summation and binomial coefficients. Not sure if it's right though. What do you guys get?

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