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2017/01/28: An issue regarding the front page of /jp/ has been fixed. Also, thanks to all who contacted us about sponsorship.

/sci/ - Science & Math

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File: 120 KB, 640x483, qfrog ponders at night.jpg [View same] [iqdb] [saucenao] [google] [report]

Does /sci/ think physics will ever reach a limit of what humans can understand? I mean the theory and mathematics become too complicated to make any further progress

 >> Anonymous Fri Mar 24 15:15:14 2017 No.8774624 >>8774545Yeah but then the Chinese CRISPR superbabies will take over and all will be well.

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hey /sci/

settle a bet for me - will drinking milk give me man boobs? or do i need to stop browsing /fit/ so much

if so, is drinking skim milk better? or same amount of estrogen

 >> Anonymous Fri Mar 24 14:49:43 2017 No.8774568 No
 >> Anonymous Fri Mar 24 15:12:19 2017 No.8774604 Milk of all types is healthy, but estrogen won't give man boobs, that is if you drink WAY to much whole or raw milk. That is fattening.
 >> Anonymous Fri Mar 24 15:27:07 2017 No.8774662 >>8774542Picograms of estrogen in food are physiologically meaningless. Like worrying about formaldehyde in pears.>Estradiol from dairy products is extensively inactivated in the gastrointestinal tract and only about 5% survives the first pass to the liver. Thus daily dairy product intake would supply only about 0.25% of the FAO/WHO upper acceptable daily intake of estradiol.You'd get more from intimate contact. Skim is better due to less saturated fat thoughhttps://www.ncbi.nlm.nih.gov/m/pubmed/24550191/

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Is Euclid cool,

or is Euclid cool?

 >> Anonymous Fri Mar 24 14:31:51 2017 No.8774519 what the hell? no one thinks euclid is cool?
 >> Anonymous Fri Mar 24 15:18:41 2017 No.8774636 Legend says his wikipedia page is semi-protected because of people editing it to say he's the coolest greek mathematician
 >> Anonymous Fri Mar 24 15:25:40 2017 No.8774659 >>8774506Euclid is cool, but non-euclidean geometry is cooler
 >> Anonymous Fri Mar 24 15:49:23 2017 No.8774714 nah euclids a nerd

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daily reminder that this pathetic excuse for a human being has NEVER actually been a scientist

4 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 15:11:35 2017 No.8774601 >>8774500Thanks Mr. Reddit.
 >> Anonymous Fri Mar 24 15:58:37 2017 No.8774743 >>8774466...but he plays one on TV!Also, I have never been a robot, why does 4chan keep asking?
 >> Anonymous Fri Mar 24 16:14:44 2017 No.8774780 >>8774466Great post OP!
 >> Anonymous Fri Mar 24 16:23:47 2017 No.8774797 >>8774466So? He just needs to understand and explain a large variety of scientific subjects. An actual scientist is going to be specialized, and would be less likely to be able to clearly explain things to layman even within their field.
 >> Anonymous Fri Mar 24 16:30:14 2017 No.8774822 Bill Nye the bachelor's degree guy

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>/sci/ front page
is this the worst science board on the internet?

7 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 14:17:53 2017 No.8774489 >>8774486>For example, there was one time I answered a math question wrong, but didn't realize it and acted very smug and even insulted the OP and everyone else in that thread. [email protected]fucking brainlet retard HAHAHA
 >> Anonymous Fri Mar 24 14:19:45 2017 No.8774492 >>8774442thanks for adding a contentless meta thread to the pile
 >> Anonymous Fri Mar 24 14:23:28 2017 No.8774502 >>8774486Yes
 >> Anonymous Fri Mar 24 14:34:52 2017 No.8774531 File: 212 KB, 500x692, immunity_dog.png [View same] [iqdb] [saucenao] [google] [report] you should see /pol/
 >> Anonymous Fri Mar 24 14:45:38 2017 No.8774557 >>8774442sey

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$\text{Reminder that if you are not fluent in }\LaTeX\text{ , then you're a failure and will never be a scientist.}$

19 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 15:49:55 2017 No.8774717 >>8774401Primitive Monkey... I write in HTML5 and MathML
 >> Anonymous Fri Mar 24 15:53:00 2017 No.8774726 >>8774713Its pretty commonly used in physics
 >> Anonymous Fri Mar 24 15:59:00 2017 No.8774744 File: 40 KB, 361x499, 51q8PRQHElL._SX359_BO1,204,203,200_.jpg [View same] [iqdb] [saucenao] [google] [report] >>8774697[eqn]\gets \qquad \begin{matrix} \text{I used this and found it to be pretty good:} \\ \text{ it covers all the essentials and is comprehensive } \\ \text{ enough to be used as a reference.} \end{matrix}[/eqn][eqn]\text{Also, you will almost certainly find this useful:} \\\color{blue}{ \underline{ \text{ http://detexify.kirelabs.org/classify.html } }}[/eqn]
 >> Anonymous Fri Mar 24 16:25:11 2017 No.8774802 >>8774711>>8774744Thanks for the links. I'll check out the book.>>8774701What the difference between the two? I've heard people recommending either one of them, while denouncing the other.
 >> Anonymous Fri Mar 24 16:53:01 2017 No.8774857 >>8774802there's a texmaker series on youtube, don't listen to those others loosers. If you want ez, just down texmaker and watch the vids.

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I just thought of a clever way to solve P vs NP... and it could change everything, including quantum computers.

16 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 15:13:30 2017 No.8774611 >>8774564popsci: the post
 >> Anonymous Fri Mar 24 15:13:55 2017 No.8774616 >>8774383Riddle me this:Pick a pill. Swallow one of the other three, then swallow the one you picked. There is a chance of 2/3 that you first swallowed a different color than the one you were holding. But you never had any concrete information.
 >> Anonymous Fri Mar 24 15:14:27 2017 No.8774619 File: 3 KB, 176x160, 176px-Monty_closed_doors.svg.png [View same] [iqdb] [saucenao] [google] [report] >put each pill behind a piece of paper so you can't see it>put nothing behind two pieces of paper>six pieces of paper>set up two monty hall set-ups, with the empties in the center>first one act like you are going to pick the rightmost paper, but reveal the empty one and switch>second one act like you are going to pick the leftmost one, but reveal the empty one and switchYou now have a 66.7 % chance of picking red blue
 >> Anonymous Fri Mar 24 15:19:17 2017 No.8774638 >>8774383Is this picture supposed to have something to do with P vs NP? If so, I can completely guarantee you that the question of P vs NP has precisely nothing to do with what you've posted.
 >> Anonymous Fri Mar 24 17:11:00 2017 No.8774902 >>8774564>>8774616>>8774619The monty hall problem probability conundrum is reliant on monty having knowledge of which door is the correct door. He doesnt tell you which one it is but he effectively eliminates one that it isnt.

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face it. /sci/fags are a cult.

1 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 15:51:09 2017 No.8774721 >>8774378His tweet doesn't even make sense.So what, Tyson never said that private donors don't support the arts.
 >> Anonymous Fri Mar 24 15:52:27 2017 No.8774723 File: 32 KB, 300x300, oh-snap.jpg [View same] [iqdb] [saucenao] [google] [report]
 >> Anonymous Fri Mar 24 15:54:24 2017 No.8774730 >>8774721He posited a land that provided no support for the arts. Woods pointed out that a complete zeroing of government money for arts would not have that result.In the context of the current budget debate, it all might be clearer to you. Read a newspaper, I guess.
 >> Anonymous Fri Mar 24 17:03:26 2017 No.8774880 >>8774730not the guy but had the same issue thank you wise anon
 >> Anonymous Fri Mar 24 17:15:35 2017 No.8774913 File: 3.36 MB, 1090x1074, 1470848781735.png [View same] [iqdb] [saucenao] [google] [report] >face it. /pol/fags are a cult.>RELIGION WAR NOW!plz go /pol/ and never come back

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ELI5: laser diodes, how do they work and how do i use them to make a functioning portable laser?
(quick explanation on how they work, parts needed, and general how to connect & configure it?)

2 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 13:31:07 2017 No.8774334 >>8774313no resistors or anything just directly to power source? is there a specific amount of power needed/is it specified?
 >> Anonymous Fri Mar 24 13:43:50 2017 No.8774387 >>8774298Magic. Laser diodes can be hooked up directly to a battery, 12 volt batteries work best.If you can't figure this out on your own, perhaps you shouldn't be doing it in the first place
 >> Anonymous Fri Mar 24 13:56:34 2017 No.8774432 >>8774387i thought you couldn't, but wanted to make sure. thanks
 >> Anonymous Fri Mar 24 15:40:00 2017 No.8774692 >>8774432He actually fell for it
 >> Anonymous Fri Mar 24 16:21:18 2017 No.8774785 File: 42 KB, 796x629, laser.png [View same] [iqdb] [saucenao] [google] [report] >>8774298This is how lasers work in general. Hope it helped.

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I'll start : Cody's Lab

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How do we stop this shit and pop-sci in general?

3 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 15:18:48 2017 No.8774637 >>8774139There is nothing wrong with reasonable futurism and science fiction. It's pseudoscientific popsci you should be hating.
 >> Anonymous Fri Mar 24 16:25:36 2017 No.8774804 >>8774139A diverse white population helps. Nobody can deny.
 >> Anonymous Fri Mar 24 16:27:16 2017 No.8774810 >pop-sci in generalby being passionate about your fields and educating people >this shitby killing marxists :^)
 >> Anonymous Fri Mar 24 17:39:14 2017 No.8774971 >>8774139A reasonable amount of diversity does help. Remember that the travel ban costs several millions of us dollars to your universities.While there might be fewer black scientists as white/asian, they do exist. And every scientist can bring something to the edifice.
 >> Anonymous Fri Mar 24 17:42:24 2017 No.8774980 I thought David Rockefeller died. Is he still making these people say this stuff from beyond the grave?

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Does duality exist or is it just a form of indoctrination?

>in and out are separate
>or there just is, and location is irrelevant

 >> Anonymous Fri Mar 24 12:52:15 2017 No.8774149 >>8774132>Does duality existDuality is universal.Existence is dual to universality.
 >> Anonymous Fri Mar 24 12:53:42 2017 No.8774160 >>8774132Duality is a meme created by the the desert people.
 >> Anonymous Fri Mar 24 12:59:20 2017 No.8774192 File: 99 KB, 600x410, audio-talks-by-dandapani.jpg [View same] [iqdb] [saucenao] [google] [report] >>8774160>Duality is a meme created by the the desert people.Jokes aside, I think this is real
 >> Anonymous Fri Mar 24 13:39:00 2017 No.8774367 bump

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I'll just leave this here

 >> Anonymous Fri Mar 24 13:44:02 2017 No.8774389 >>8774096hmmm really makes you think

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>mfw realizing in my degree plan that I stop taking math after differential equations and linear algebra
What? I didn't realize mechanical engineering never delved into any real math...now I'm seriously considering switching to being a math major

What do?

32 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 15:59:01 2017 No.8774745 >>8774278That is probably for manufacturing.if you actually delve into design then things become complicated.And yes, I know the computer does a lot of it but you still need to be able to understand the results.For example, anyone can put numbers in a CFD code, but you need substantial knowledge about PDEs and linear algebra if you want to set correct boundary conditions. Even more, if you actually need to code it yourself.
 >> Anonymous Fri Mar 24 16:01:24 2017 No.8774748 >>8774094Get both degrees. I did it. It took one extra year to do. Engineer that took all tech electives in Mathematics.
 >> Anonymous Fri Mar 24 16:05:16 2017 No.8774761 >>8774094those are the math classes by math department. mechanical engineering classes, especially higher level ones dealing with fluid flows, go deeper in terms of solving PDEs. also, as a phd studnet i was required to take at least 2 more graduate level math courses out of only 12 courses in total that are required.discretization is another big thing. my university has multiple ME courses dealing with discrete math.of course if you weren't a retarded, shitposting freshman you would know this.
 >> Anonymous Fri Mar 24 16:29:09 2017 No.8774817 File: 39 KB, 483x504, 6543546.jpg [View same] [iqdb] [saucenao] [google] [report] >>8774094>imaginary numbers add another dimension to the real numberswhy the fuck these faggots call them imaginary
 >> Anonymous Fri Mar 24 16:37:45 2017 No.8774831 DiffyQ and linear algebra are as far in math as you need to go if you ever want to do anything practical or useful with your knowledge and skillset. Applying it to study of materials was fucking awesome for me. First 2 years are terrible at any job, you gotta pay the toll, but then you get 3 or 4 fresh grads reporting to you and a legion of blue collar cucks who bend the knee when you walk by. t. civil eng.

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A sum of Rs. 10 is lent to be returned in 11 monthly installments of Rs. 1 each, interest being simple. the rate of interest is?

 >> Anonymous Fri Mar 24 12:23:52 2017 No.8774080 >>8774064How about you go fuck yourself and do your own homework
 >> Anonymous Fri Mar 24 12:25:23 2017 No.8774083 >>8774080you retard, i was tired of /tv/. so i decided to make a thread here.what happened? cant you solve it? LMAO
 >> Anonymous Fri Mar 24 13:43:46 2017 No.8774386 >rupeesWe're not going to do your homework, sanjay

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Why is wolfram showing the wrong result? Is there a way to see a step by step solution? If yes, could anyone with wolfram pro check the inverse of f(x)=3+((x)/(2x-3))? Thanks.

7 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 12:17:45 2017 No.8774059 >>8774037They are equal.
 >> Anonymous Fri Mar 24 12:18:52 2017 No.8774066 >>8774057What? Tell me one value for x for which they are not the same.
 >> Anonymous Fri Mar 24 12:34:41 2017 No.8774099 File: 6 KB, 614x126, sameshit.png [View same] [iqdb] [saucenao] [google] [report] >>8774057$\frac{-3x+9}{-2x+7} = \frac{(-1)(3x-9)}{(-1)(2x-7)} = \frac{3x-9}{2x-7} = \frac{3(x-3)}{2x-7}$$\frac{-1}{-1} = 1$
 >> Anonymous Fri Mar 24 12:35:56 2017 No.8774104 >>8774099I'm a retard, thanks
 >> Anonymous Fri Mar 24 16:23:50 2017 No.8774798 what the fuck is this bullshit OP you weren't seriou were you why would you do thisI'm angry now

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Anyone know java? I need some help with object oriented programming. I'm trying to create to objects, one called course needs an array of students. The other one is student, which needs an array of courses. How do I initiate both?

 >> Anonymous Fri Mar 24 11:50:54 2017 No.8773979 *two objects
 >> Anonymous Fri Mar 24 11:53:16 2017 No.8773985 File: 1.25 MB, 3264x2448, IMG_0988.jpg [View same] [iqdb] [saucenao] [google] [report] I drew out the inheritance of each object and it looks like this
 >> Anonymous Fri Mar 24 11:56:51 2017 No.8773999 >>8773976>>>/g/dpt
 >> Anonymous Fri Mar 24 12:06:33 2017 No.8774024 >>8773999Thanks m8

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>How long of not seeing them... how much more does that noose have to tighten before you say "Hang on, maybe these things just aren't there"?
>That's a really good question. For you to be able to say that, you would have to somehow rule out the mechanism by which they could form. You would have to demonstrate that that mechanism isn't physically plausible or has been ruled out for some other reason. If you can't rule out that mechanism, then there's no reason why they shouldn't form.

 >> Anonymous Fri Mar 24 11:53:40 2017 No.8773987 >>8773965>shifting the burden of proof: attempt 21952368

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After all the bullshit going on here about IQ. My hypothesis is that anyone >110 IQ(above average), good socio-economic background and good work ethics can make it into competitive courses like medicine, law and architecture and simply practice them in reality. However, if one decides to go into research, let's say, a Ph.D. in mathematics, one without a decent level of IQ will find it very difficult to see patterns and understand complex novel scenarios in the field.

My university entrance exam is the A levels. People breezing through school and getting A*A*A*A*, both you and I know are an exception rather than the norm, probably less than 0.9% of people get this grade, imagine how many within that get it without working much. The average IQ for medical students is 115, the average score of a medical student is AAA(Typical offer for medical school), so connect the dots, and holy fucking shit, IQ doesn't mean shit until you get to Ph.D. level. Even in MD programme, where memorizing is the game, IQ doesn't play that big of a role anyways.

Tl;dr stop blaming your fucking IQ and get your ass off the couch and start working. Work ethic and wealth is the key here.

5 replies omitted. Click Reply to view.
 >> Anonymous Fri Mar 24 13:03:40 2017 No.8774210 >>8774162The
 >> Anonymous Fri Mar 24 13:05:44 2017 No.8774214 >>8774210Loo
 >> Anonymous Fri Mar 24 13:45:34 2017 No.8774396 >>8774181/sci/ is basically 4chan's version of /leftypol/
 >> Anonymous Fri Mar 24 13:52:14 2017 No.8774417 Kids in 4chan thinks that the IQ will determinate his success in our society. IQ don't do anything else that saying how much you can see differents patterns.
 >> Anonymous Fri Mar 24 14:16:05 2017 No.8774484 >>8774396Brainlet white supremacist.

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