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/sci/ Science & Math

Threads added between 2013/01/16 and 2013/01/23

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Most viewed threads in this category

14 more posts in this thread. [Missing image file: hornet.jpg]
I think I have less muscle control on one side of my face I can curl my lip in one direction on one side and not the other it's a tiny difference, but it's noticeable to me I don't want to be a hypochondriac about it, but I can't think of any reason for it other than a brain problem the rest of the internet wants to tell me I had a stroke, but I'm 19 and healthy
31 more posts in this thread. [Missing image file: 1356863656330.png]
What kind of laptop should a engineering/physics/astronomy student use for school? Thinkpad? Mac? specifics? budget is <$1000 I asked /g/ but they masturbate over 10 year old thinkpads a bit too much
6 more posts in this thread. [Missing image file: ft_symmetry1.png]
Question: "Prove that the difference between two odd functions is even" http://books.google.com.au/books?id=o2E5HBgXFZwC&pg=SA1-PA38&lpg=SA1-PA38&dq=the+difference+between+two+odd+functions+is+even&source=bl&ots=sRdUST8PAi&sig=8ov8HV36Z5aBsZvPOLs4MyhNwAA&hl=en&sa=X&ei=4eD_UJj6OKWjiAffi4H4Aw&ved=0CHgQ6AEwCQ#v=onepage&q=the%20difference%20between%20two%20odd%20functions%20is%20even&f=false what
6 more posts in this thread. [Missing image file: aw.jpg]
Can someone help me through this please step by step? An elastic bone is compressed 10 ?m by a student’s weight. The student picks up a very heavy backpack and the same bone compresses by an extra 5 ?m. (a) How many times heavier or lighter is the student than her backpack? (b) How much more potential energy is stored in the compressed bone with the backpack on than without
58 more posts in this thread. [Missing image file: 1838_cell_theory_4_cropped-large.jpg]
If cell theory states all cells come from pre-existing cells, then where did the first cell come from? I find it almost impossible that organic molecules intelligently organized themselves into single celled organisms.
9 more posts in this thread. [Missing image file: 1350615746538.jpg]
riemann sums! can someone give me a quick explanation of the en.wikipedia.org/Riemann_sums#definition section? i have something of an understanding of it but i want to make sure it's a clear one.. i'm in the process of autodidact'ing calculus 1 and i'm in the process of moving on to 2, starting to study volume atm
1 more posts in this thread. [Missing image file: hello world.png]
AI thread, lets discuss AI you guys say AI has been solved and its only a matter of more processing power, but then where can I find the code for it? or is it proprietary? if so how do you know it exists?

Perpetual Flight of High Altitude Platform

36 more posts in this thread. [Missing image file: bug.jpg]
GET IN HERE YOU CRAZY MAD-SCIENTIST BASTARDS! Currently have two different (***Otherwise)perpetual flight designs to attempt to implement. From the communities standpoint, which method would be more reliable, and overall better to use. Completely Solar or HHO Generation+Fuel-cell(or solar). Collection of the H2O would be achieved by using alternating super-hydrophobic & super-hydrophobic containers which would then feed the HHO generator through an electrolysis process thus feeding the main balloon envelope, and supplying hydrogen to the micro fuel-cell on-board to power devices or the HHO generator itself(Thin film solar cells can substitute or supplement this stage). Communications systems: give me your ideas. 2.4Ghz/5Ghz Tracking Line of sight 900Mhz Tracking Line of sight Satellite(iridium, public etc..) HAM(APRS perhaps) Other peoples designs http://www.instructables.com/id/Arduino-Radio-Controlled-Hydrogen-Blimp/ Got a bunch more related links to post if there is sufficient interest ***If it doesn't get shot down or fail in any other way, for any other reason.
10 more posts in this thread. [Missing image file: noisy neighbors.jpg]
Dear /sci/entists, I have a problem that my limited knowledge of physics and Google cannot easily solve. I was hoping you could help me. I live in an apartment with wooden floors. Which would be fine, except for the fact that the tenants who live below me tend to listen to very bassy music. Somehow, the music causes my floors to vibrate, but the music isn't at a very high volume. In other words, I can't hear the music itself but I can hear and feel the vibrations of my floor. I tried asking them to turn their bass down, but they said "no", even though I was polite and understanding. I was thinking that maybe there would be a way to vibrate my floor so that it cancels out the vibrations caused by their music in my apartment. Do you think this is possible? If possible, how would I go about doing it?

Statistics

2 more posts in this thread. [Missing image file: Bayes.jpg]
Welp, /sci/, I may want to get an M.S. in statistics. I want to see if working on forecasting algorithms would be cool. Have a B.S. in math. Have had no experience in statistics whatsoever. How can I get it? Should I commit to grad school before I can get it? When should I start preppin for the GRE? I have a salaried job currently, ~$38K but it is a soul-sucking waste of time. Not related to my study in any way. Any advice would be greatly appreciated. Smooches.
49 more posts in this thread. [Missing image file: 1358724710073.jpg]
does anyone know the answer to this?
4 more posts in this thread. [Missing image file: Penguins.jpg]
Electrical engineering vs Industrial engineering I asked this question 2 days ago, but no responses were given. Although I'm more experienced in electronics, I'm wondering which degree will be basically more worthwhile. I don't want to engage in excessive grunt-work producing circuit diagrams, and being molested by project managers. I want to know what job is generally more care-free and mitigated. Which job involves less responsibilities? I'm searching to obtain a management position. I'm aware I won't receive impartial responses from people since it's exclusively pertains from experience and subjectivity. But I'd like some input. Thank you.
18 more posts in this thread. [Missing image file: 197618.jpg]
Hey, /sci/, I need to find a torrent for this book. Google has failed me. Can anyone help me out?
12 more posts in this thread. [Missing image file: durr.png]
http://www.brainmetrix.com/free-iq-test/ Dat feel

Are robots hurting job growth?

61 more posts in this thread. [Missing image file: rethink-robotics-baxter-worker-robot.jpg]
We're not going to run out of jobs, right? .....RIGHT? http://www.cbsnews.com/video/watch/?id=50138922n
5 more posts in this thread. [Missing image file: ugh1.jpg]
I have some excel/math problem. I made a basic calculation relating to banks and finances. My problem is that I want excel to give me a sum of the amount I say it has to give me but I don't know how I could calculate that. So basically, if H14 = 10, then I want H15 showing me the sum of C3:C13
7 more posts in this thread. [Missing image file: Ring5-3-08001-1.jpg]
Hey /sci/ Im looking into low cost high yield agriculture methods like this pic. Its called a japanese tomato ring. its the best Ive seen so far for high yields in low space. Wanna test it out w other plants, gmo's and energy crops. any other ideas for high yield farm tech? ps steal my idea if you want, not trying to pub in a journal w it, something else. So if you steal that idea I prolly notice.
5 more posts in this thread. [Missing image file: radio.jpg]
why wont this work? 1) blast backup data as radio signals at something .5 lightyears away 2) retrieve same data sent 1 year later
8 more posts in this thread. [Missing image file: 1353238604633.png]
Can I use a microwave in place of an autoclave or pressure cooker in my home lab? I can't imagine anything could survive 5 minutes on high power.
4 more posts in this thread. [Missing image file: mth173FEreviewq1.jpg]
So after a year off of school I'm getting back into it. Starting small with 1 class this semester. In calc2 so trying to brushen up on my Calc so I'm doing this calc1 FE review. First problem gave me problems. Is there another way to do this problem or is the way I did it right? Just do some random variables and plug and chug?






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