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/sci/ Science & Math

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Most viewed threads in this category


87 more posts in this thread. [Missing image file: 1350239830138.jpg]
Well hello there /sci/... It's been awhile since I've posted, and I finally have some down time, allowing me to post again. Anyways.... Would any of you fine, aspiring scientists need any textbooks for your upcoming semester? If any of you remember my thread earlier this year, you know I'll do my best to deliver your request.

Dark Matter

21 more posts in this thread. [Missing image file: PH2011020203516.jpg]
I have a theory which I believe may explain Dark Matter/Dark Energy, expansion, and potentially time to some degree. However, I'm not a physicist. I'd like to run my theory by someone who could potentially expand upon it or rule it out if it's illogical. any takers? I promise it's not a crackpot theory
19 more posts in this thread. [Missing image file: penecillin.gif]
Penicillin alternatives thread? What the fuck will we do when this shit is no longer useful, let's brainstorm!
1 more posts in this thread. [Missing image file: Nibbler_and_leela.jpg]
http://www.space.com/18901-nasa-mission-jupiter-moon-europa.html the price tag of proof of alien life is 4.7 billion. NASA needs the funding. This is the single most important thing that humanity will have ever done. Lets get it funded. spread the word.
16 more posts in this thread. [Missing image file: 16950-620x-80b976ab3d70d474ae5f0257(...).jpg]
Will human / animal hybrids ever be possible?
79 more posts in this thread. [Missing image file: dav_soc.jpg]
So this guy lived to see 70 eating only but bread. Many others lived to 90 on the same diet. Tell me why I'm eating anything else than carbs again?
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.
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?

Worst calculus

1 more posts in this thread. [Missing image file: hell.png]
Hey /sci/ What's the worst calculus you went through or made you give up? Just found mine: \lim_{x \rightarrow +\infty}\cosh{x}^{\sinh{x}}-\sinh{x}^{\cosh{x}}
4 more posts in this thread. [Missing image file: images.jpg]
Hey there /sci/. I don't know if this is the right place to ask, but i need help. Can any of you explain to me how does the rand() function work in C? I mean, how does its code works, not how to use the function. Thanks in advance.
6 more posts in this thread. [Missing image file: Calcium_unter_Argon_Schutzgasatmosphäre.jpg]
What you guys' opinion on calcium?
2 more posts in this thread. [Missing image file: illusionpeak.jpg]
>>444512889 So, since this could never happen, according to the scientifically minded, what we're looking for is basically an escape. A realistic alternative for those who wont or cant take ascension seriously. >10 billion people >more every day >limited resources >less every day >limited capacity of the planet to support life >more polluted every day begin the discussion of timeline for cybernetic technology to arise so we may escape our polluted bodies and planet >before its too late
8 more posts in this thread. [Missing image file: 2010-07-15_euler_identity (1).jpg]
Anyone else have their mind blown with power series? Isn't it incredible how this formula is true?
4 more posts in this thread. [Missing image file: UK-education.gif]
Is a MSci degree considered a full masters degree? And would it be unnecessary to follow it up with a standalone Msc degree?

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?
5 more posts in this thread. [Missing image file: calculus2[1].png]
Hello, /sci/. Is it possible to get a basic understanding of multivariable calculus in roughly 5 weeks? I'm about to enter my second semester at a university studying physics. I just took calc 2 and got a near 100% in the class. I'm taking multivariable calc and linear algebra at the same time next semester and I have absolutely nothing to do over winter break so I was considering self-learning one of them to get a bit ahead. Is this manageable or should I just wait for the semester to start?

quadratic function

5 more posts in this thread. [Missing image file: question-mark.jpg]
what happens if you are provided with a quadratic function f(x) = ax2 + bx + c and its graph. How is the quadratic equation ax2 + bx + c = 0 deciphered?
12 more posts in this thread. [Missing image file: 1308330512473.jpg]
I was recently laid off at a big pharmaceutical company and I'm having trouble finding work. I've applied to so many positions in the past couple of weeks it's not even funny. So who here can help me find another job? I have experience as a Finance Analyst, but I can be an analyst in other things, because really the only thing different is Data, trying to figure out how you use the data is pretty much the same in any field. so anyone here in Analytics or statistics?
5 more posts in this thread. [Missing image file: therisingape.jpg]
Will humanity take the next step?
11 more posts in this thread. [Missing image file: Jim.jpg]
Hi /sci/, I have a math puzzle for you. Jim lost his glasses. He can't see well without his glasses so he can only tell if they're directly under him. His glasses are somewhere along an infinitely long line. The probability distribution of his glasses is the standard normal distribution, P(x) = 1/sqrt(2*pi) e^(-1/2 x^2) Starting at the position x=0, Jim wants to minimize the average distance he must walk to find his glasses. So What is the sequence of positions for Jim to walk to which minimizes this? For example, if Jim walks to the positions 0.01, -0.02, 0.03, -0.04, 0.05, ... he's walking a lot to cover a small space cause he keeps walking over what he already covered. However, if he walks to the positions 1000, -2000, 3000, -4000, 5000, ... there's a good chance his glasses are close to 0 but negative, and he'll be walking way more than he needs to.

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