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/sci/ Science & Math

Threads added between 2013/05/22 and 2013/05/29

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Most viewed threads in this category

40 more posts in this thread. [Missing image file: math-calculus-diagram-DHD.gif]
I have to learn Calc 1 in a month via self-study. I have about 4 hours a day to do this. Any tips on a self-study approach? My current plan is working out of a textbook I have and watching 10-20 khan academy videos (and doing the exercises) a day. Tips very appreciated
15 more posts in this thread. [Missing image file: knuckle-blaster-stun-gun-600x450.jpg]
How many volts would it take to A) Kill a person and B) Completely incapacitate a person It's for an experiment.
7 more posts in this thread. [Missing image file: Mathematics_concept_collage.jpg]
Why is x^2+y^2=2y a circle, but x^2+y^2=2x is a parabol? ) >pic not related
46 more posts in this thread. [Missing image file: 1369002176849.jpg]
>mfw I just got an A in Calc I On a scale from 1 - 10, how good at math am I?

Jesus loves you

8 more posts in this thread. [Missing image file: images.jpg]
Why do you think god didn't make the universe? Its the only logical assumption.

why jaypeggg

3 more posts in this thread. [Missing image file: Holy-Bible2.jpg]
Why all taht science n stuff. The answer is Jesus Christ. You don`t believe me? check out the bible motherfucker

Halting problem

6 more posts in this thread. [Missing image file: index.jpg]
I don't get how I can reduce something to the halting problem to show it is not decidable. For example; How can I show that the problem of deciding if a turing machine halts on some input of length 4 is undecidable? I realise I need to reduce this to the halting problem to reach a contradiction but no idea how to do so formally...
2 more posts in this thread. [Missing image file: simulations6.png]
What are some good websites for looking up scientific articles? I'm trying to find NMR relaxation times for pure Dipalmitoylphosphatidylcholine (DPPC lipid) to compare to my simulations, but I can only find mixtures with other lipids in experimental data. Any suggestions? Pic kinda related. It's a lipid bilayer I made... can't remember if it's DPPC or DOPC (took the pic a while ago)
6 more posts in this thread. [Missing image file: 313409_446538135424223_151955049_n.jpg]
So I've gathered you gentlemen here today to help me solve the greatest mystery I am faced with. A Co-worker of mine claims that she can hear God talking to her sometimes. He tells her to do things and she does them. She is infuriated because he makes her try to talk to other people about their problems. Now, she has claimed to not know anything about the people she talks to, but the problems that she God tells her about are always there with them. Now allow me to shine some history here: >Pentecostal >Use to have turrets until God healed her >Later had a car crash and died >During her death she remembers being held down and not able to move only hearing "unforgiven" over and over and a light in the distance Now, gentlemen, what has happened to her? How do we explain these phenomenons? OR, if a lengthy response isn't your thing I would gladly accept any resources I could read to learn more on these topics. I'm really interested in what might be wrong with her since I've never met anyone who HONESTLY believed these things were happening. (And the searching I have done has brought no decent answers). Thanks kindly.

Bridge engineering

15 more posts in this thread. [Missing image file: b4bridges[1].gif]
Thoughts on the proposed Canada-Denmark bridge across the Nares Strait?
6 more posts in this thread. [Missing image file: images (4).jpg]
how do buzzing magnets work?
19 more posts in this thread. [Missing image file: u wot.gif]
Can someone try to explain to me how time dilation works? For the most part I understand the concept of it, objects moving at different accelerations experience time differently, however I just don't understand why that occurs.

Web of Knowledge

0 more posts in this thread. [Missing image file: tumblr_m4o9a6JDSI1r35r7ho1_250.jpg]
Hey /sci/, I recently found out that my university has access to a resource called the web of knowledge - a really useful tool for browsing science journals and other publications. I hadn't even heard of it before. The citations are all hyperlinked, and each publication will have a list of publications that has also cited that particular publication; making it incredibly easy to get a quick overview of the recent research that's been going on in a particular field. The only downside is, it seems to be like a academic circlejerk. Only academic institutions are given access, so you'll have to check to see if your uni/college/whatever has a subscription. You can do that here: http://wok.mimas.ac.uk/ I'm not sure if this is a well-known thing, but I thought I might help a few people out by posting this here.
86 more posts in this thread. [Missing image file: xooter17.jpg]
So, who was the most intelligent person in history? some notable first round choices: De Vinci, Newton, Einstein, Archimedes of Syracuse, Tesla, Sun Tzu...
30 more posts in this thread. [Missing image file: aliens.png]
What the fuck is up with these people? Do they actually believe what they're saying or is this some sort of a joke? http://www.youtube.com/watch?v=hX06nI04j0g And it's not like this is the only video. You've got tons of high ranking officials talking about this shit and thousands of videos of conferences like this one. Personally I feel like this is all a giant prank since, if there are aliens here then why the _fuck_ would they be hiding and collaborating with governments? That's so stupid it hurts my brain. Why would a species that has advanced to the point where they can basically break rules of physics to get here, want to have anything to do with us? They would either destroy us or, you know, ignore us. Care to elaborate, /sci/? Are all these people wackos or are they actually trying to get some truth across, however unlikely? What the fuck is up with all these talks?
10 more posts in this thread. [Missing image file: download (15).jpg]
This might belong on /adv/, but I'm not quite sure. I was thinking about maybe learning some computer science via self-study, and was wondering what the best way of approaching this was? I was thinking watching khan academy, but in terms of a book, what does /sci/ recommend? I'm a bio guy, so I've never really gotten into comp sci, but it seems interesting and couldn't hurt to at least try it. Any help is appreciated.
4 more posts in this thread. [Missing image file: 1354558051101.jpg]
Have any of you studied the career of biotechnology? What is it like? Is it difficult? Do you use the lab often or is it more lecture-like? Lots of maths?

A question

0 more posts in this thread. [Missing image file: 220px-PIC18F8720[1].jpg]
Can microcontrollers work with large voltages, say 230V's at between 1-13 Amps ? If not does that mean if you want to work with these voltages you need to incorporate analogue components with the microcontroller or just purely analogue components ? I'm just trying to understand whats possible with electrical engineering here. Thank you.
8 more posts in this thread. [Missing image file: 1345564289590.jpg]
Sup /b/. y u no trap thread? Trap thread? Trap thread.
15 more posts in this thread. [Missing image file: Tropical-Tower-Wars-An-Exotic-Tower(...).jpg]
What is the science that finds the optimal way to build in Tower Defense? The usual TD have a lane in which monsters passes, and you build away from that lane. A variation of that is having some buildings or units that can block the path. But where the math really happens is when you're the one making your own path with your towers, pic related.






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