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/sci/ Science & Math

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Most viewed threads in this category

What's your Cognifit cognitive score?

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Cognifit is a website that assess cognitive abilities of tens of thousands of participants from all around the internet, gauges their score against a normalized scale from 0-800, where the global mean is 407, and places them precisely on the global bell curve. When you register, click on the Assessment tab and 'Start Assessment'. It should take around 15 minutes. I wonder what's /sci/'s score as it is clearly the most intelligent board on 4chan. Registration is free and you can just bullshit whatever information you'd like including email (no confirmation required), though it is recommended that you'll give your exact age so that you'll be given a precise comparison of your score to people within your age group. So what's your score /sci/? Mine's 519. http://www.cognifit.com/
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I'm trying to rearrange the rydberg equation to find 1/n2^2 So far I've got 1/n2^2 = (1/n1^2)-(1/(?*R)) but when I try to find the log of 1/n2^2 my answer keeps coming out wrong. halp pl0z?
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I've got the following stat question and I'm having trouble figuring out what the appropriate one sample test is and whether it's two sided or one sided: The proportion of deaths due to lung cancer in males ages 15-64 in England and Wales during the period 1970-1972 was 12%. Suppose that of 20 deaths that occur among male workers for at least 1 year in a chemical plant, 5 are due to lung cancer. We wish to determine whether there is a difference between the proportion of deaths from lung cancer in this plant and the proportion in the general population. Is this a one-side or two-sided test? Also, I need to perform a hypothesis test and get a p-value.

Working is the worst thing ever

170 more posts in this thread. [Missing image file: 1330125978318.jpg]
>finish comp sci degree >get software job >have to wake up at 6am everyday to get to work >work 8am-4pm, get back home at 5 or 6 >have 4 hours before goin to bed >have to cook, eat, prepare my work for tomorrow >rinse repeat Holy shit I wish I was in college, real life sucks in college I'd wake up at 9 or 10, go to school for 3-4hours and then just do what I wanted the rest of the day! I need to either make a ton of money real fast, or go back to school and get a Phd? But I hear a Phd is hard work and being a prof takes up all your time... fuck, how do I make millions$$$ and retire early?
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/sci/ you are the least malicious board of 4chan, and the greatest possessors of scientific knowledge. Therefore I would value your views very much on the topic of veganism, which I have discussed with several 4chan goers on multiple boards. I came here because I heard a lot of bullshit, and I just want to get some rational points and information. Is veganism is a reasonable way to live for humans, or a self destructive lifestyle choice? Please discuss.
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Give me a function whose plot looks as close as possible to the pattern depicted in the image. So far I got asin(sin(x)) which is a sawtooth and sin(sin(x*pi*0.5)*pi*0.5) which has the plateaus but the slopes are too steep. if/else lists can be used. The optimum is one where the length of the plateaus is the same as the horizontal width of the slopes, not their length, which means that chosen a random number as input one is 50% as likely to end up in a slope or plateau. This is not homework. I need it for an improvised neural network to automatically optimize Turing-complete programs.
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phd grad students are 95% cock suckers in my experience. Post docs are worse. You think you know everything, you are conceited, and contrarian. And yet you know nothing -not even in your own field, in your entire life you never set foot outside of academia (and it shows), you are are deluded and immature. I have never met 30yo men and women that still have the college frat boy disposition until I got to grad school. You people make me sick.
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Hey /sci/ pls help I have to write a program OCAML but I am not sure what should the program have to do. Here is the question Q3 (hard) Write a pair of functions called curry and uncurry with the property that curry : ('a * 'b -> 'c) -> 'a -> 'b -> 'c uncurry : ('a -> 'b -> 'c) -> 'a * 'b -> 'c and for any f, f' of the right type curry (uncurry f) = f uncurry (curry f') = f'.
8 more posts in this thread. [Missing image file: Tulips.jpg]
>mfw spend hours a day on my upper level math classes and still struggle. Don't show up to other classes and still have 100%.
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>Newton's law of cooling Is picture related simplified? Or is the cooling of objects unrelated to their mass? I thought 100mL of liquid in my freezer would cool faster that 100L of the same liquid
6 more posts in this thread. [Missing image file: 7700.gif]
Say that in some beautiful alternate Universe USA has a candidate, who is technologically literate and talented by modern standards with a successful Engineering/Science/Computers/Whatever in those lines career and not some Lawfag. He is winning and pretty much set to be the next president. His goals among other things are to tell the nation for all to hear that the Congress and Government in general needs field diversity by which it doesn't solely consist of dumbfuck Lawfags to run the country while being advised by the Experts but rather Experts in their respective positions being advised by Lawyers and Lawyers only being bosses there where law, diplomacy and writing up shit matter. The main deal: He wants to shift the Military budget, a pretty fucking big percentage of it, into Energy. Namely the goal is to set a plan by which Oil dependance is eliminated to the highest degree possible. This renders sucking Saudi cock for Oil obsolete and renders wars in the Middle East obsolete. In fact the savages can continue onto self exterminating over the Oil we don't buy anymore but they still depend upon because we ain't giving them the tech or money anymore. Anybody say accidental population control? So, what could possibly this be? What technology and what CAN be used to substitute our need for Oil?
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Why can't Walter White just synthesise methylamine?
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>musician space tourist http://www.washingtonpost.com/blogs/innovations/post/sarah-brightman-says-she-wants-to-be-next-space -tourist/2012/10/10/8893527a-12ee-11e2-ba83-a7a396e6b2a7_blog.html
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Hey /sci/ I wanted know your opinion on the Schrödinger's cat paradox. If you put something in a box then u cannot determine whether it is indeed alive or dead rite? But what I don't get is if you were the one to put the living thing (a cat for example) inside the box then wouldn't you clearly know I'd the cat waz alive or not?

Ball hitting an angle

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/sci/, what effect would the angle of the triangle have on the trajectory of the ball? me and my bro are having an argument about it, would a smaller angle make the y smaller?
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> you can't solve this within 20 minutes
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what about the fourier transform takes a function from the time/space domain and puts it in the frequency domain? i understand the math well enough, but i don't see the big picture as to how the fourier series representation is correlated to the original function
6 more posts in this thread. [Missing image file: frodo.png]
Very first job interview tomorrow (for teaching middle schoolers). Should I take an EC stack to help with focus, social skills, and confidence?
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I had an argument with a person who is (to me) a very smart person. The discussion popped up in a psych class. The idea was "with enough time you can do *anything*". I was on the side that you can not actually do *anything* you want with my reasoning being that if you were in our universe as an immortal with all planets stars w/e taken out but you, that you could not make a chair (I couldn't think of a thing to make at the time). My friend's argument was that if you are the only person in the universe if you just think there is a chair, you now have a chair. By my reasoning a chair that you think is there is not the same as a chair that is actually there; my friends was that if you are the only thing in the universe then you are the universe, I say the universe and space itself is just the black nothingness itself and not the things in it. Any thoughts, questions, or any insight on this question?
1 more posts in this thread. [Missing image file: 1332812780397.jpg]
So I know about secret integration, and we just went over double integration in my multivariable Calc class, but what about double secret integration?

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