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/sci/ Science & Math

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Most viewed threads in this category

116 more posts in this thread. [Missing image file: ]
What "easy" maths did you struggle with? Be honest.
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What's this guy's name again?
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Whats the weight of the sunlight that hits the earth every year?
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What's the point of even going to college, /sci/? Debt, employers want experience and going to a good school, and it's who you know and not what you done.
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Why does /sci/ refuse to acknowledge the huge disparity in university quality? You get topics filled with people talking about their grades in Calc 1 and Calc 2 etc. You may as well talk about how long pieces of string are. Places like MIT do Calc 1 to 3 in two courses any way. And still have more content. And Caltech does proofs etc on day one. And that's just the disparity in two maths courses. Now imagine four times that difference every year because there are 8 courses, multiplied by four for every year of the degree, multiplied by being surrounded by smarter people rather than the dumb normies who got shit school grades. Also another way you can tell that /sci/ goes to bad unis is when they boast "99 % of my CS101: Java Syntax class failed." How the fuck is this a boast? The shitter universities have higher drop out rates (a few exceptions, when they take many people but weed them out, but this is rare and mainly very prestigious nationalised institutions). Hard working students almost always pass. If a Harvard guy goes up to me and says "99 % of people passed CS101" I'm not going to see Harvard as shit. When I once posted a problem from the first year Oxford maths course on here as a way to troll people at worse universities, I got tonnes of abuse. Also I'm not an Ivy league guy. I'm a guy who went to a uni ranked 100 - 150 in the world and I am as butthurt as anyone can get. My anus is redder than a cherry dipped in blood. Don't think I'm trolling. Also there are very few exceptions to the stuff I say: I mainly think of Germany, or other mainland Euro countries (not France), where I think there is more equality due to government intervention or something (or maybe we just never hear about them). >inb4 only grad school matters Yeah, sure, 4 years of the difference in quality I talked about contributes zero difference to grad school performance...

Intelligence and Genetics

42 more posts in this thread. [Missing image file: ]
http://www.nature.com/neuro/journal/vaop/ncurrent/full/nn.4205.html Systems genetics identifies a convergent gene network for cognition and neurodevelopmental disease Two of these networks, M1 and M3, showed replicable enrichment for common genetic variants underlying healthy human cognitive abilities, including memory. These results illustrate how systems-level analyses can reveal previously unappreciated relationships between neurodevelopmental disease–associated genes in the developed human brain, and provide empirical support for a convergent gene-regulatory network influencing cognition and neurodevelopmental disease. Liberals are on suicide watch. Eugenics is the only way forward. Genetic Determinism of intelligence and cognitive abilities is now scientific truth. popsci articles http://www.theguardian.com/science/2015/dec/21/new-genetic-theory-might-pave-way-to-understanding-human-intelligence
132 more posts in this thread. [Missing image file: ]
Are universities getting dumbed down?
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Can reading garbage on 4chan all day long cause brain damage?
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Hello, fellow /sci/entists. So I'm currently studying nuclear physics, and today I came across the story of Hisashi Ouchi for the first time. For those unfamiliar: https://en.wikipedia.org/wiki/Tokaimura_nuclear_accident http://www.cnic.jp/english/newsletter/nit128/nit128articles/jco.html Ouchi was exposed to lethal levels of radiation and kept alive by the government for almost three months against his will to see what would happen. The morbid details of his death aside, I'm mostly interested in the cause of the accident itself. According to various other sources, he was pouring a bucket of aqueous uranyl nitrate into a tank containing uranium dioxide when the solution suddenly went critical. I've always been under the assumption that criticality can only be achieved with relatively large amounts of enriched uranium, but the uranium sustaining the reaction in this case was natural uranium. Since I haven't been able to find any information about this reaction, I figured you might be able to answer my questions: 1. Can high levels of gamma and neutron radiation like what killed Ouchi be produced by simply reacting aqueous uranyl nitrate with uranium dioxide? 2. Assuming it can, what's smallest amount of these two chemicals that can be combined to achieve criticality? 3. In the event that such a solution remained subcritical, would it still produce any measurable levels of gamma and neutron radiation? 4. Can such a reaction be safely reproduced in a lab setting? Thank you for the help.
12 more posts in this thread. [Missing image file: ]
Does IQ exist, or is intelligence what you make it? >debate it, faggots

>picking one area of expertise

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how the fuck do you decide what you will study for the next 4-5 years? this is insane. what if you lose interest? i'm interested in superconductors, CPU architecture, heat exchangers, propulsion systems, chemical explosives, protein synthesis, nonlinear PDEs, energy storage, machine learning/cryptography, lithography/crystallography, electroactive polymers, josephson junctions, multijunction solar arrays, all both in theory and in application. am i fucked? some anon here said do material science, electrical engineering, or physics. pic related.
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What are your thoughts on this guy?
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Guys I'm confused with this, different answers all over the place. The 'correct' answer does not make much sense either. >A speeding truck locks it brakes and it skids to a stop. If the truck's total mass were doubled,what would happen to its skidding distance? Why? If you work it out mathematically it would be 1/2 the original stopping distance. But the 'official answer' is they are the same? Are they just accounting for the brakes? Don't brakes rely on friction, The answer should be 1/2 of the before mentioned skidding distance. Help /sci?
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When will we get robot partners guys?
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Are the legitimate strategies for placement and shooting in battleship (other than 'don't shoot where a ship wouldn't fit in' of course), or is it all just randomness and maybe a sort of bluffing-type metagame?

Forgive my lack of understanding if this is stupid

3 more posts in this thread. [Missing image file: ]
I need a sequence of numbers (and this sequence should be in a number system which uses a real number for a base, for example base-?) which returns to the original number through the same operation being applied to each number. I am not a math student or even a student at all really, so I don't know if this is possible and I'm probably not using the correct terminology for what I'm trying to convey. This might sound a bit vague but I hope someone is able to help me. If you want to know why I need this it is because I am interested in circular narratives.
51 more posts in this thread. [Missing image file: ]
Bros: >Math >MechEs >CivilEs >ChemEs >NukEs >Bio_ >Chemistry Not Bros: >Physics >EEs >CS >Actuarial math >BiomedE >Medical science /discuss.

Why do some smart high school students want to do research?

2 more posts in this thread. [Missing image file: ]
There are smart people in the UK, Europe, etc who get top grades in their finals and yet decide to pursue Physics, Math, etc instead of Medicine, Law, etc for their undergraduate degrees. Some aspire to do research in the future. Yes, I understand that being a doctor or lawyer is stressful, but why don't these smart people go for "easy" jobs instead? Being a physiotherapist, nutritionist or actuary is not that stressful. Working for the government is nice as it's difficult to be fired from your job. This is certainly the case compared to something such as a researcher where no results = no funding = no income. Really, all jobs are boring in their own ways. Even if they are interesting at the start, they become dull over time. Why not just pick something which leads to a stable income and learn to love that job?
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Happy new arbitrary time period, you miserable normies.
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How do I study? I mean no, for real. In school I never had to do anything and now in University the workload is overwhelming. Now I thought it would be a good idea how do you manage your courseloads, how do you study and how did you go over this transition sucessfully? I can't be the only one.

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