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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/?
14 more posts in this thread. [Missing image file: desktop.jpg]
Is the Earth going to become uninhabitable this century?
15 more posts in this thread. [Missing image file: me.jpg]
What does /sci/ think of mechanical mechanical engineering? What are some interesting fields to go into with this degree? I choose this major because i wanted to be an engineer and it interested me the most out of all the engineering fields.
8 more posts in this thread. [Missing image file: 1351663080493.jpg]
So sci I ask you, Should I go with the career that will make money (Pharmacy) or should I do the career I am interested more in (Psychology). I will make my own decision in the end but I would like some second opinions, I like both fields but one I have more interest in while other other I will make more money.
14 more posts in this thread. [Missing image file: 1276258920644.jpg]
When did people stop believing the Earth was flat? Surely they didn't believe that nonsense in Columbuses time?
16 more posts in this thread. [Missing image file: adderall.jpg]
I can't get adderall here because the NHS doesn't believe in adult ADHD. It would turn my life around and help me so much, but sadly I can't have the easy way out So what exactly does Adderall do in the brain? How can you tackle severe procrastination without drugs? (And I'm talking really severe, I mean to work in the morning, make detailed plans, don't know where the day has gone, repeat for 3+ years and getting kicked out of school, constantly daydreaming and getting distracted)
0 more posts in this thread. [Missing image file: he_might_have_asked_for_it.png]
Could someone explain to me how this works? is there someone with a remote control making the exoskeleton walk or is it programmed to do it by itself? Would the construction of something like this fall in the field of mechatronics or biomechatronics? Thanks in advance. http://www.youtube.com/watch?v=i6Bgt2yg1qs
229 more posts in this thread. [Missing image file: doctor tits.png]
>female scientists respond to accusations that women aren't as good as men in math and science >say that they face discrimination in the industry because they're women >and that they need affirmative action Why can't I hold all this rage? https://www.youtube.com/watch?feature=player_embedded&v=rtZCq83v92s
4 more posts in this thread. [Missing image file: temp.png]
Trying to learn Mathematica. I tried to solve the logistic equation numerically (pic related). Why isn't the plot working?
8 more posts in this thread. [Missing image file: 299423_10151410833854966_1241385857_n.jpg]
hey hey hey, ive been wracking my brain and think it broke. so long story short i'd like help please. so the question is: What is the major product which results when (2R,3S)-2-chloro-3-phenylbutane is treated with sodium methoxide in methanol? i believe that the mechanism for this reaction is EN2, since a strong base is present (methoxide). also EN1 would lead to a methyl shift and sn1 and sn2 wouldnt result in any of the supplied answers (its multiple choice) i went through the problem and have the correct product and only one product can form because there is only one hydrogen to enable anti elimination. the phenyl groups agrees with the h group on the opposing side of the double bond. naturally this leaves the methyl groups in agreement with each other since the butene group is planar. HOWEVER i am told that the answer is (Z)-2-phenyl-2-butene. for this to work the methyl groups in agreement with each other myst take priority over the phenyl group and that doesnt make sense to me. can anyone explain?
0 more posts in this thread. [Missing image file: Double_Sicily_by_HPPD.jpg]
http://www.youtube.com/watch?v=xzTHjlueqFI So what is the chance that we can actually start re-terraforming the deserts of the world (most of them man-made due to shitty agricultural practices for thousands of years on already shit soil) and what effect would it have on climate change? By spreading forest around wouldn't that combat the increasing carbon in the atmosphere by trapping it in trees and the ground?
6 more posts in this thread. [Missing image file: einstein.jpg]
I didn't know where else to post this but.. I have a macbook pro. Just now, i lost control of my mouse and all my programs (on my dock) starting opening up. I freaked the fuck out and shut my laptop, waited a few seconds then opened it again. Wtf happened. Paranoid me thinks someone is using a wireless mouth to fuck with me lol
27 more posts in this thread. [Missing image file: fetal-postion.jpg]
>one more semester left of college >realize I haven't learned anything >the total sum knowledge I've learned over the past four years could be gained by one day of intensive internet research >i guess just studying real hard before the tests then forgetting it all after wasn't that great of strategy after all Holy fuck I'm scared
1 more posts in this thread. [Missing image file: marie.jpg]
Hey sci hypothetical question how many babies would I have to throw off a cliff before they evolved wings and antural selection picked the ones that could fly to safety

1,4 Cycloadditions

9 more posts in this thread. [Missing image file: cycloadd.png]
Hey /sci/ I have a question about the 1,4 cycloaddition (diene + dieneophile) for organic chem. I understand the underlying theory of primary and secondary orbital interactions during the transition state when you add the reagents in my picture (too lazy to name) that causes the endo product to be favoured. However, is the endo product ALWAYS favoured when you have a 1,4-cycloaddition reaction? Pic related, its the reagents to the reactions.
11 more posts in this thread. [Missing image file: Edward_Witten.jpg]
/r/ing Thomas' Multivariable Calculus, any edition. Will bump with stuff until then.
10 more posts in this thread. [Missing image file: 1355122905410.gif]
Applied Math Major here, trying to figure out classes I should take. We're told to take classes from a wide variety of topics (obviously) and I'm already taking Physics and CS. I'm going to need more credits to graduate and I'm wondering what would be the best subject to take? I'm looking at Chemistry and Econ right now, is there anything else I should consider?
3 more posts in this thread. [Missing image file: neil_tyson.jpg]
how can you not have mad love for this gentleman? no homo, just sayin'
0 more posts in this thread. [Missing image file: questionhelp.png]
I'm sure I'll get banned but my exam is in a day and I can't figure this one out. My confusion is basically as follows: I know that <r^2> = some function of D. But what I don't know is if it is 2*D*deltat*#of dimensions which would be 4*D*deltat; or would it be 2*D*deltat. The lecture notes say the latter, but I've seen quite a bit of literature saying it is the former. If you leave your email in the link I'll Paypal $10 to the first person who can solve this. Either way, see you in a week.

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