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/sci/ Science & Math

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Most viewed threads in this category

1 more posts in this thread. [Missing image file: 6677660251_2c932e618a_b.jpg]
Pro-tip on how to calculate eigenvalues with a TI 83 or 84 of matrix A with dimensions n x n: make a function: y = det([A] - X*identity(n)) and find the zeros of this function

Which branch of mathematics is the hardest?

12 more posts in this thread. [Missing image file: math_beauty_truth_really_hard-293x307.jpg]
My model for "hardness" is the following: When you're teaching something or explaining a mathematical argument, if you're speaking to someone who is not very bright then you will need to break the argument down into as many, clear, small steps as possible in order for the person to follow it. You need to use many steps where it is easy to see and understand how one step leads to the next step. But if you're talking to a bright student, then you can use fewer steps to explain something and each step can be a bit harder to see or understand how I got there from the last. You can literally imagine it like a child climbing up some stairs. Easy stairs would be such that each step was only 10 cm high whereas hard stairs would be if each step was 50cm high. SO my definition of for the hardest field of mathematics would be the one which necessarily has the most hard-to-understand steps which simply cannot be broken down or simplified or made easier to understand. You can merely state it that way in those terms and either the student is bright enough to follow or understnad it or the student is not. Now I know none of you will have studied all fields of mathematics, but which was the hardest field, according to this definition, that you came across?

Is 48 an even number?

44 more posts in this thread. [Missing image file: images.jpg]
Is 48 an even number? A friend and I have been discussing this question for a few hours now and can't seem to come to a resolution. Can you help us out?
0 more posts in this thread. [Missing image file: 0023f53c_medium.jpg]
How are Oxford's Very Short Introduction books? I've noticed them popping up in some of my searches and there seem to be books on everything, with a lot from the same authors. How have people fared with them?
22 more posts in this thread. [Missing image file: yahoowtf.jpg]
>not getting all your science news from yahoo.com http://finance.yahoo.com/news/human-face-might-look-100-171207969.html
1 more posts in this thread. [Missing image file: 4ffc909518613314ed0007f4.png]
Fuck you, science!
7 more posts in this thread. [Missing image file: 1365179121891.png]
Is there a good book to learn Vector Calculus from, at least better than Stewart's. I pass Vector Calc with a B+ but I don't think I truly understood the concepts so I want to give another go at it. Thanks.
51 more posts in this thread. [Missing image file: Screen shot 2013-06-07 at 9.46.50 PM.png]
They mad http://insenial.tumblr.com/post/52346544926/teacakeomnislash-coachmcguirkscowtattoo
0 more posts in this thread. [Missing image file: bc.jpg]
Hello /sci/, could you help me to find the internal energy for CA Thak you.
19 more posts in this thread. [Missing image file: 1293820463838.jpg]
Is it true that American Universities accept most international students? I want to go over there to study, but my grades are pretty mediocre, can someone give me some info?
18 more posts in this thread. [Missing image file: 800px-Carthage_sacredband.jpg]
>>get bad grades through high school because of ADHD >>go on meds freshmen year of college >>suddenly attentive >>look people in the eyes >>mind doesn't wander >>start getting good grades >>tfw no one in this world has nothing intelligent to say >>tfw 99% of the words coming out of people's mouths is garbage data not worth paying attention too >>tfw I wasn't ever missing out on anything
165 more posts in this thread. [Missing image file: grades.png]
Grade thread
9 more posts in this thread. [Missing image file: IMG_20130604_163558.jpg]
Is there science in making money? Pic unrelated
1 more posts in this thread. [Missing image file: NormalVector_700.gif]
Hey /sci/ i am here to humbly ask for your assistance. I need to "Show that the spherical equation cot(phi) = 2cot(theta)+sin(theta) defines a plane through the origin (with the origin excluded). Find a normal vector to this plane.
2 more posts in this thread. [Missing image file: least_squares.png]
Okay, I mostly understand least squares, but I have no idea what this is asking for. I have the equation x = A^T*(A^-1)*(A^T)*b Is there something I should be solving for?
1 more posts in this thread. [Missing image file: Glynis-Causality-Shirt.jpg]
The easiest way to learn science is by the scale of: physics --> chemistry --> biology --> specialist applied sciences --> neuroscience --> psychology --> social science --> philosophy --> linguistics --> economics --> politics --> culture --> personal life o wait that's how you should live your life too. You can start with mathematics, instead, if you put faith in pseudo-empiricism before you start. I think in the future each of these will also be a focus on each of the year levels through school and taught as such. Ps, I have 2 PhD's and I'm one of the most highly regarded scientists and philosophers in the world. But, you know, I'm saying this on /sci/ cause anonymity.

Chimeras bitches, are you ready?

3 more posts in this thread. [Missing image file: chimera.jpg]
http://www.dailymail.co.uk/sciencetech/article-2017818/Embryos-involving-genes-animals-mixed-humans-produced-secretively-past-years.html http://news.discovery.com/tech/biotechnology/human-animal-hybrid-chimera-splice-slide-show.htm http://en.wikipedia.org/wiki/Chimera_%28genetics%29 Unrelated, but I think you may all still find these and their impact on human non-senescence interesting. Enjoy reading~ http://en.wikipedia.org/wiki/Hydra_%28genus%29
4 more posts in this thread. [Missing image file: Merovingian.jpg]
in light of quantum theory, shall we discuss causation? For example, I drink too much wine, therefore I must take a piss. Or, given our current understanding of backward time, am I now drinking wine because I pissed in the future? These are confusing times indeed. The quantum world is the real pisser, and yet, we know it to be 100% factual that what we experience does not follow a strictly linear course.
27 more posts in this thread. [Missing image file: 1369553974070.gif]
If two particles are quantum entangled and one falls into a black hole. What happens to the other? Also lets say we make a video camera whos hard drive is made up completely of atoms that are quantum entangled with an exact duplicate harddrive and we throw the video camera into a blackhole and the camera somehow survives and is spewed out in another dimension or time or place and still retains its shape somehow. Could we be able to download whats off the harddrive we kept and see whats in it?
29 more posts in this thread. [Missing image file: cat.jpg]
Do vacuum cleaners work in space?

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