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/sci/ Science & Math

Threads added between 2013/11/20 and 2013/11/27

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Most viewed threads in this category

9 more posts in this thread. [Missing image file: 1292137809179.png]
This is the chemical formula for love: C8H11NO2+C10H12N2O+C43H66N12O12S2 dopamine, seratonin, oxytocin. It can be easily manufactured in a lab, but overdosing on any of them can cause schizophrenia, extreme paranoia, and insanity. Let that sink in.
15 more posts in this thread. [Missing image file: image.jpg]
You know how /fit/ has threads to motivate them to workout? Can we have a thread like that for learning? I'm ahead of my classes but I want to learn farther. The problem is that I'm a lazy cunt and usually choose to play vidya or smoke weed(such edge). I like science/math the same way I like working out. It's satisfying to see the results but its also hard and taxing to get them.
29 more posts in this thread. [Missing image file: goodpoint.png]
How do you respond to people that insist that mathematics education & proficiency have no place in most fields?
8 more posts in this thread. [Missing image file: 1385257100654.png]
out of electrical, mechanical, chemical and materials which engineering is easiest to get accepted in
3 more posts in this thread. [Missing image file: green-anole-01.jpg]
i believe in evolution as i can obviously witness it but i am skeptical about the theory that everything came from single cell based organisms and evolved from slight mutations because why would everything be like classifiable groups of species? and why is creationism so outlandish for some people? they think everything came from nothing or that existence always was? okay, fine, but i dont see what is supposed to be significantly more believable about that, that it could cause some people to look down on others i was just thinking, anole lizards lose their tails when scared, so then that means only the ones who developed this gene have ever survived to breed? why wouldnt there be faster ones that look the same but don't lose their tail? do you get what i'm saying?
1 more posts in this thread. [Missing image file: Motor.jpg]
Project Statement: The machine shown in the figure is rigidly anchored on a rigid concrete block and the mass of both is 3000 kg. The block has height h = 1 m and square horizontal section with a = 1.2 m and is supported at the corners by springs of stiffness k = 2000 N/m. i)Derive the two dimensional equations of motion of the system using both Newton’s law of motion and Lagrange’s equations methods. ii)Find the natural frequencies and mode shapes of the system using both hand calculations and Matlab (you can also use SAP2000/ADAMS. iii)A 200-kg mass falls on the middle of one edge of the block and stayed in contact with it. Neglecting the change in the mass, determine the resulting motion. iv)If the block is isolated by layers of elastic materials in a rigid concrete base. Design the isolation if the machine has parts that rotate at 250, 500, and 1500 rpm. v) If there is unbalanced mass of 0.1 kg on the machine at a distance of 0.25 m from the axis of rotation and angular velocity of 1750 rpm. Find the resulting vibration.
4 more posts in this thread. [Missing image file: Vrillon.gif]
It's 46 anniversary of Vrillon incident. http://www.youtube.com/watch?v=6BWHVmBY0Cs What are you thinking about it?
8 more posts in this thread. [Missing image file: bagshaw_stone_dance.jpg]
Just in theory is one object with infinite energy collided with an identical object with infinite energy going at the speed of light what would happen?
12 more posts in this thread. [Missing image file: neutron_star_1_2[1].jpg]
Astronomy is the best kind of science The entire field is fucking amazing

mold

7 more posts in this thread. [Missing image file: IMG_00000039.jpg]
Sup guys, I need some rational thought here. I'm working at the store I manage this morning when I notice this mold on the ceiling. I proceed to call my boss who says they've seen it and because it's dried it safe. This is pretty contrary to my understanding of spores, can anyone identify this or give me some advice? I'm about to lock up and go home.
7 more posts in this thread. [Missing image file: Irwin.png]
http://www.realfarmacy.com/28-signs-that-the-west-coast-is-being-absolutely-fried-with-nuclear-radiation-from-fukushima/ This shit was posted by a friend on Facebook this morning. As someone who actually studies chemistry, this load of horseshit makes my blood boil. First off, the author cites "high levels" cesium-137 as evidence that our fish are being irradiated. First of all, cesium doesn't spread to other species like mercury, and has a half-life of around 70 days. That is to say, it doesn't travel well from fish to humans, even if levels were high enough to warrant alarm. Also, the fact that walruses and polar bears are losing hair or migrating could be very well chalked up to seasonal changes, climate change, hereditary reasons, etc. Correlation doesn't equal causation. The author outright lies when he talks about the "California-sized cloud of radiation" that's heading towards the West Coast. There is radiation, yes, but by the time it reaches the coast, it will have lost much potency and its size will be diminished, if not completely irrelevant. There are so few downsides to nuclear power that when something like this happens, environmental fundies start acting like we're in a game of Fallout where shit just magically mutates and we all become irradiated by living on the West Coast. But go ahead and read it for yourself. Tl;Dr: Environmentalists are fucking retarded.
8 more posts in this thread. [Missing image file: 1382601299923.png]
I'm a general math major and was considering switching into applied. The applied math major at my uni is the exact same as the general math but it has a few extra math courses. If I want to go into grad school for pure math will they view me as less qualified even though I'll have done the same pure math classes?
16 more posts in this thread. [Missing image file: green lex luthor.jpg]
so I'm working through Project Euler (very new to coding), and I'm on problem 3 http://projecteuler.net/problem=3 I have a working algorithm, but the code fails when I use the number, which is too large to be stored in any of the primitive value types (in Java) Is there an easy way to fix this? pls help

Space Engine

8 more posts in this thread. [Missing image file: TheMagnificentBastard.jpg]
good evening fellow /sci/ friends. Do anyone of you know the software called Space Engine? If so, I was wondering if all the system there are real. Anyone knows? I find many systems I never heard of.
1 more posts in this thread. [Missing image file: beautiful scientist.png]
Guys, what are some significant online course sites? I understand there's more than a few out there made for nations and people without convenient access to education but I'm afraid I've lost the list for them and I'd rather enjoy knowing what's the best out there.
13 more posts in this thread. [Missing image file: panic-button[1].jpg]
Britfag here, applying to University for 2014. I'm unsure whether I ought to do Mathematics or Physics. I was good at both in school but I'm concerned that I'm not as strong at math as I'd need to be for a proper undergrad Math course. In my A-Levels I got an A* in physics, an A in maths and a B in AS further maths (self-taught because of schedule constraints). Would I be able to handle university Math? Also either way I want to improve my math ability. What kind of stuff should I be studying? I'm just finishing a Coursera course on complex analysis and the Functional Analysis and Statistical Mechanics ones starting in January look pretty interesting. Will these be useful? What textbooks should I consider?
3 more posts in this thread. [Missing image file: Complete_graph_20.png]
why do complete graphs have a triangular number of edges?
4 more posts in this thread. [Missing image file: Theresa Heath.jpg]
Can someone please explain special relativity to me. I'm having trouble getting my head around Einstein's train example.
1 more posts in this thread. [Missing image file: cross the road.jpg]
0 more posts in this thread. [Missing image file: DSC02022.jpg]
Anyone else collect?






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