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/sci/ Science & Math

Threads added between 2012/12/12 and 2012/12/19

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Most viewed threads in this category

26 more posts in this thread. [Missing image file: 1355918036229.jpg]
Why is it that fapping in the morning helps wake you up but fapping at night helps you fall to sleep?
197 more posts in this thread. [Missing image file: history.gif]
If life ever developped sentience before mankind, wouldn't they have had a huge time span to reach Earth at least once in the past 1.9 billion years? Just considering the possibility of near to c speeds of interstellar travel they would have had 950 million years to get here. So we can be fairly certain that there is no intelligent life, or an interstellar civilisation in a 950 million lightyear radius around Earth. If we assume the highest speed achievable with engineering would be half the speed of light that would mean there is absolutely no life in a 425 million light year radius around Earth. It would take 950 million years for light of Earth to reach their planet and then they would travel for another 950 million years if they master near c relativistic speeds. If they only master half the speed of light that would mean light from Earth would take 633 million years to get to their planet and and they would need 1267 million years to get to Earth. If we consider any advanced civilization to achieve at least 0.005% c at one point in their history then we can assume that in a radius of about 94.9 thousand lightyears around Earth there is or was no other technological civilization ever.
6 more posts in this thread. [Missing image file: Calcium_unter_Argon_Schutzgasatmosphäre.jpg]
What you guys' opinion on calcium?

Stats and busstops

5 more posts in this thread. [Missing image file: 089-Normal-Distribution.jpg]
Any other examples of seeing gaussian curve in so pure form in nature?
38 more posts in this thread. [Missing image file: 1351298030241.png]
I hear a lot that LSD can "open your mind" What would the effects of trying to understand math of physics under the influence of it be? Bad trip not included
73 more posts in this thread. [Missing image file: engineer.jpg]
Go ahead
5 more posts in this thread. [Missing image file: 2001-03.jpg]
Do we have an inherent resistance to killing our own, or are we instinctively inclined to kill our fellow mates? Read: the act of killing our own, not other animals. There's a thread on /k/ right now, that you should check out. >>>/k/13793327 It seems to be Lt. Col. Dave Grossman's "On The Act Of Killing", and S.L.A. Marshall's "Men Against Fire" vs Michael Ghiglieri's "The Dark Side of Man". Here's a video of Grossman introducing the topic: http://www.youtube.com/watch?v=_9Ozno7HMGE
6 more posts in this thread. [Missing image file: 1355700115515.gif]
>yfw 2013 is the first year since 1987 to have entirely different digits
4 more posts in this thread. [Missing image file: 1354000168916.jpg]
9 more posts in this thread. [Missing image file: 1352233890471.jpg]
I have a question /sci/. The potential difference between two points, a and b, is independent of the path taken from a to b. What does that mean? Isn't more energy required to undertake a longer path? How come it doesn't matter? I cannot wrap my head around this.

good math problems

15 more posts in this thread. [Missing image file: Deepwater_Horizon_oil_spill_-_May_2(...).jpg]
sup /sci/entists, saw this one a few weeks ago so i'll repost. i'll put up a few more, but share! find all integer solutions of: (x+y)^x=x^y
1 more posts in this thread. [Missing image file: 1355107721940.jpg]
http://www.ted.com/talks/lang/en/ben_goldacre_what_doctors_don_t_know_about_the_drugs_they_prescribe .html Is publication bias a real problem?
15 more posts in this thread. [Missing image file: 488043_358520157565459_550652674_n.jpg]
Hey /sci/, what's the first class you learned about Quarks in?
13 more posts in this thread. [Missing image file: Zure_matten_aard_4cacd79c9916d.jpg]
ln(-e) + ln(-e) = undefined ln(a) * ln(b) = ln(ab) ln(-e * -e) = ln(e^2) = 2 I don't get it, please elaborate.
17 more posts in this thread. [Missing image file: bankercatnoapprove.jpg]
Hello /sci/, /pol/tard here. I've realised that arguing about politics is almost entirely pointless without knowing a decent amount on the subject of economics. What's the best possible way to learn economics quickly and thoroughly at home? Any specific books I should study? I have a fairly good grasp of mathematics.
10 more posts in this thread. [Missing image file: 1vYTC.gif]
I'm not really sure if this is the right board for this, but here goes nothing, I guess.. So what I need is, the names of the most uncommon books about psychology. Uncommon in the sense that no one's ever heard of them. And about psychology, in the sense that it would be about understanding people and their minds, etc. I know this is pretty random, but I could really use the help.
30 more posts in this thread. [Missing image file: 1353211373854.png]
Why is education such a crappy job? What should the government do to make education is a serious field and not someones last resort?

High IQ

5 more posts in this thread. [Missing image file: Capture d’e?cran 2012-12-18 a? 01.2(...).png]
Hi /sci! Don't know if the right place but probably the right people :) I am not an english native but yet i'll try to be readable... :) Recently I've been diagnosed as Intellectually gifted (Haut potentiel in french). Don't know what actually comes next... I mean: I went through a severe depression but still was doing my stuff at college, trying to finish my master in biology. I feel really bored in life and I can't think of any job that really make sense to me. I enjoy learning new stuff and using my mind solving problems but can't easily be paid for it. I am 25 and I really need to start work to earn money to live. I enjoy a lot knowing things in different branches and see same topics under different POVs. But I do this kind of things in my free time but I don't see much the point of all the stress that comes with our lives nowadays. I thikn I'd stay better in a mental hospital with people caring for me and I'll just live my life into my mind. Did anyone of you got similar experiences? P.S.: wtf a CAPTCHA was that?

Intro to science/rational thought

20 more posts in this thread. [Missing image file: beaker.jpg]
I need to get a gift for a 13 year old girl - any good ideas? I sometimes wish I had been introduced to science at a younger age (the stuff in public school doesn't cut it), so I was hoping to find something that might spark some early scientific interest.

LessWrong

94 more posts in this thread. [Missing image file: LessWrong.png]
Why all the hate on LessWrong? Some aspects of the community are ... cultish, but Eliezer Yudkowsky has done some good work concerning rational thought and avoiding biases. However, whenever anyone links to LW- even one of Yudkowsky's threads- they are immediately shot down by some naysayer. Why the hate, /sci/?






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