[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / r / s / t / u / v / vg / vr / w / wg] [i / ic] [r9k / s4s / vip / qa] [cm / hm / lgbt / y] [3 / aco / adv / an / asp / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / qst / sci / soc / sp / tg / toy / trv / tv / vp / wsg / wsr / x] [Settings] [Search] [Mobile] [Home]
Board
/sci/ - Science & Math

 Name Options Subject Comment Verification 4chan Pass users can bypass this verification. [Learn More] [Login] File Please read the Rules and FAQ before posting.Use TeX with $tags for inline and [eqn] tags for block equations.Right-click equations to view the source.  05/04/17 New trial board added: /bant/ - International/Random 10/04/16 New board for 4chan Pass users: /vip/ - Very Important Posts 06/20/16 New 4chan Banner Contest with a chance to win a 4chan Pass! See the contest page for details. [Hide] [Show All] [Catalog] [Archive] File: sciguide.jpg (9 KB, 200x140) 9 KB JPG https://sites.google.com/site/scienceandmathguide/ >> Reminder: /sci/ is for discussing topics pertaining to science and mathematics, not for helping you with your homework or helping you figure out your career path. If you want advice regarding college/university or your career path, go to /adv/ - Advice. If you want help with your homework, go to /wsr/ - Worksafe Requests. File: mensaresult.jpg (91 KB, 998x1005) 91 KB JPG https://test.mensa.no/ Post your results bros, and females I guess. This test is 30 minutes. Do not answer if you don't think you know the result. Don't guess to cheat. Just click next. Make it so it tests what you actually know, not guessed. I'm 30 and male. I got a straight average IQ. I was in some gifted program after taking an IQ test as a child but I don't know if I got less intelligent as I got older or I just capped out young. I am a diagnosed schizo though. Maybe I'm getting slower as i age. But I am happy that I am not below average.I thought i may be pretty below average due to mental illness now. >Yes I know online tests arent they most valid but I just want to see how others do on this same test. >inb4 i get made fun of for low IQ 108 replies and 30 images omitted. Click here to view. >> >>11885341 this is what high motor processing function and low visual memory looks like desu, don't let this be your or your children. >> File: 1579516291738.jpg (219 KB, 1359x726) 219 KB JPG >>11885339 you would immediately recognize the pattern if there was an animation. many people who solve this play through that animation inside their minds. the ability to play with images and rotate them for example inside your mind is a part what IQ tests measure >> So I have a question after reading this thread. I have a friend who's alt-right. I'm not, I'm centrist. He goes on about blacks being low IQ and mexicans being low IQ and spews how IQ is genetic and how they're genetically inferior basically. I really dislike this, but I am not the best debater in the moment, i freeze up and dont know how to rebut his points and I don't know how to respond to the statistics he lists since I don't care enough to research this in detail. But, after seeing you guys explain IQ tests. The IRL ones go over, verbal, spatial, and some math based skills correct? So, logically, that'd imply if someone was born poor, had a bad education or no education (African countries) or etc... their environment played a huge outcome into the result of their IQ test. This is what I was telling him. Poverty and culture/way you are raised are the main reason for differences among nations/races. Not genetics. How do I scientifically disprove a racist person and help them see blacks and Mexicans and Arabs are not shit tier people? >note. I dislike many african cultures, Arab cultures (dont like Islam) and Chinese culture (i hate how they treat animals and the xenophobia in many asian countries). But I'm fine with americans of all skin colors. I don't feel I hate the people for their skin color/race, but I just don't like cultures that stone homosexuals and kill cats/dogs and the like. >> >>11885339 What was your IQ? I figured out that some cancel each other out (whether i selected the right answer idk, maybe i messed up lining them up in my head) and I got 100 IQ as my result. >> File: Untitled.png (178 KB, 1440x1080) 178 KB PNG ~135 IQ. Is this any good? i made some wrong choices when i was 17 and got a MEME degree, now at 22 i am thinking of going back to collage and getting a degree in Electrical Engineering, do you think its a good idea or am i fucking myself up again? 29 replies and 1 image omitted. Click here to view. >> File: 1593616923194.jpg (118 KB, 749x780) 118 KB JPG >>11884525 electrical engineering is best engineering >> >>11884980 >EE are just as capable of securing a CE, SE, or CS job ahahahaha Wait wait you're serious AHAHAHAHAHAHA If what you posted was in any way shape or form true why do CE's outearn you? top kek you literally posted shit that contradicts your delusions Imagine making 17k less than a CE while thinking you know more than them. Cringe. Actually you do know more EE, but that just proves how useless EE is as a degree kek. Meanwhile you fags wouldn't be able to handle Real Analysis. You spend four years on math that a math major learns in about 7-8 classes. An EE degree from MIT is worth less than a math degree from a state school. Math is the elite major, employers know this, so if given the option between an EE that barely understands what a Fourier transform is and a math major that is very well acquainted with the theory its obvious who they'll pick. Face it anon, you have no academic prospects no career prospects, and you suffer from a giant inferiority complex. Luckily for you fags, many Math Chad's will head to academia since we actually care for knowledge for the sake of knowledge. >> >>11884828 ce = civil? or computer? >> >>11884780 i sympathize as another jaded EE. at least we can do phasor analysis... that sure comes in handy >> >>11885188 that you firmly believe pure mathematical theory can be usefully applied in an engineering context tells me you know little about either discipline. employers dont need analytical solutions to their differential equations. they need a closed loop control system that works. sure mathematicians perform well in finance, data science, etc. but mathematicians are not engineers and engineers are not mathematicians and the two are not competing with each other File: its bases on mars.jpg (2.1 MB, 2560x1440) 2.1 MB JPG Someone explain this to me, because I don't get it. Who exactly is going to colonize Mars? There's no economic benefit, just the opposite, it'll cost you a lot of money to get there. You won't get land out of it. You will never feel the sand and waves of the ocean on your feet or scream against the wind and thunder of a summer storm again. Life will be shitty and hard and the novelty of people living on Mars will die down quickly. What will Mars actually produce to fuel the growth of a colony? What will the colonists get out of living on Mars? 92 replies and 8 images omitted. Click here to view. >> >>11885311 He is from 1960s. >> >>11885311 Consider also that you can build a space elevator on mars with contemporary materials and technology, so you could just make a station that rotates under 1g that your colonist spend 1 week a month in, or whatever. Also, if you have a colony you're going to need to collect as much water as possible. If you store it in large cisterns you could just have mandatory swim time for everyone. Swimming is a nice full body resistance exercise and gravity isn't going to make a difference. >> You're pretty much guaranteed to fuck and reproduce if you are on Mars as the genetic diversity is limited. >> >>11885334 oh, so that's why all people who are optimistic about Mars colonization are cucks >> >>11883673 It's not about what is there but what isn't No minorities File: Gravity_Hole.jpg (432 KB, 1100x859) 432 KB JPG ITT we dismantle systems of oppression in STEM by replacing white supremacist nomenclature. I’ll start: change “Black Hole” to Gravity Hole. >> White dwarf is now proto-neutron star. >> >>11885302 Dark Matter is now Mystery Matter. >> Gravity holes contain mystery matter >> “Intelligence Quotient” is now “irrelevance quotient” >> Linear Algebra is now Lesbian Algebra File: me and the lads.jpg (887 KB, 2540x1948) 887 KB JPG Previously >>11835497 Special thanks to the based department edition. >what is /sqt/ for Questions regarding math and science, plus appropriate advice requests. >where do I go for other SFW questions and requests? >>>/wsr/ , >>>/g/sqt , >>>/diy/sqt , >>>/adv/ , etc. >books? libgen.is (warn me if the link breaks) https://stitz-zeager.com/ >articles? sci-hub (you'll have to google for a link, unfortunately) >book recs? https://sites.google.com/site/scienceandmathguide/ https://4chan-science.fandom.com/wiki//sci/_Wiki >how do I post math symbols? https://i.imgur.com/vPAp2YD.png >a google search didn't return anything, is there anything else I should try before asking the question here? https://scholar.google.com/ Comment too long. Click here to view the full text. 303 replies and 51 images omitted. Click here to view. >> >>11885075 You just do a \{ and a \}. Like so: [math]\{ \}$
>>
>>11885073
Yeah, in set theory everything are sets. $\in$ is a binary relation between sets. Don't think too much about it; $x \not \in x$ just means x does not appear as an element of itself.
>>
>>11863470
How do you guys achieve dopamine from studying?
>>
>>11863470
I got an offer to study mathematics at St Andrews, should I take it? I'm from a third world country, my main "goal" of studying in Scotland was to get a degree in Europe so that it'd be easier to then continue my work or further studies there, making connections and c. I heard good things about the department so that's the main reason I applied to St Andrews.
So, would it be worth it to pay full tuition for 3 years rather than attend a cheaper university at my home country? How is a degree in Maths from St Andrews generally seen by employers/etc. I don't really care about clubbing, or that the weather is damp, etc.
>>
>>11885300
I feed on the nervous tissue of healthy fellow high iq's in the late evening right before I do my cog heavy lifting.

It's 2AM and I cannot sleep. I am going to graduate in a week with the maximum possible in computer science.
I always was that gifted kid in middle and high school, very proficient in math and science.
Even if I am very successful in my field I don't perceive this as positive. For example, all my friends that are going to graduate too are planning parties and other similar stuff.
For me instead even my mom saying that is proud of me makes me angry because I don't feel this is "right". I feel a sort of impostor, that I am not "that" good, even if all the people I know say that I am smart et cetera.
I don't think I am going to party with my friends because I feel that my accomplishments are not worth. I tend to devalue myself and I don't know how to feel good with myself for my works.
I cannot believe I am that good even if i have an average of 95+% on all the exams. It's just feel unreal and fake and it's destroying my psyche.
How can I accept myself and my accomplishments as they are without devalue my self worth ? I wish I could party with my friends and be happy but I can't because I feel this is not "right" or "enough".
>>
Graduating college for ur mommy millky?? wonderful kiddo ur a genius
>>
>>11885278
I think you have to get into an environment that's hard enough that you get to experience failure a fair amount of times. That'll help you put your level in the right perspective and look forward to improving whilst being grateful for what you've already achieved
>>
>>11885315
What do you mean ? Nothing is harder than comp. sci.

It is literally the highest IQ field just look at Neumann, Gates and Zuckerberg.
>>
Just shut up, graduate, get a job, and live the rest of your life just like the rest of us.
>>
electromagnetics will tear us apart...

File: quine-s-goals-l.jpg (129 KB, 1024x768)
129 KB JPG
To empiricists:
Can you use empiricism to justify the effectiveness of the scientific method?
>>
>>11883881
low IQ take
>>
>>11885270
Let E be evidence of X when P(X|E) > P(X)

P(X|E) > P(X)
P(~X|E) < P(~X)
P(E|~X) < P(E)
P(~E|~X) > P(~E)
P(~X|~E) > P(~X)

So the absence of evidence of X is evidence of absence of X
>>
>>11885284
>>
>>11885314
>>
>>11885320
Don't try to play semantic and categorical games with me, faggot. The scientific method has been used to obtain the most precise descriptions of reality that have ever existed, although the descriptions remain and will always remain incomplete.

File: 13468285482872872.jpg (45 KB, 827x1255)
45 KB JPG
Lang edition

previously >>11877613
>>
>>11885186
>Let G = {e} you define e+e=e and e*e=e. Obviously (G,+) and (G,·) are abelian groups and it is clear that it also distributes, therefore it is a field
You can do this if you want but it's about as productive as letting 1 be prime. It provides no benefit in any way, the only effect is that it forces you to hedge 99% of your theorems with "for all fields except this one shitty one" instead of just saying "for all fields"
>>
File: physics.png (1.8 MB, 1202x910)
1.8 MB PNG
>>
>>11885259
What if I don't have friends, physishit or normal?
>>
>>11885229
I don't know any field theorem that fails on the trivial field. Also 1 is not prime because of the concept of unit and the unique decomposition property. The fact that this field is "non-productive" doesn't imply it doesn't exist as other people suggested. Also it is useful for category theory

>>11885196
I like this map
>>
>>11885186
https://www.math.wisc.edu/~miller/old/m771-10/kunen770.pdf

File: unnamed.jpg (58 KB, 512x337)
58 KB JPG
What is the most common programming language? WiIl it take too long to learn from scratch at the age of 26 lol
>>
>>11879581
I don't trust finnish sites either
and I'm finnish
>>
>>11883559
ahhh sissy
>>
>>11883448
You're wrong. I was caught in the hype for long. Made some sweet web apps with Angular. It's never worth using. Especially if you are a well rounded full stack code monkey like me.
>>
>>11878817
erlang is well suited for beginners
>>
bumping

File: hawking.png (107 KB, 933x500)
107 KB PNG
why was he so oblivious to metaphysics?
>>
>>11885006
>>
>>11885055
>The steeds that bear me carried me as far as ever my heart Desired, since they brought me and set me on the renowned Way of the goddess, who with her own hands conducts the man who knows through all things.
>>
does any of my fellow physicists read/learn philosophy past or even at high school level?
>>
>>11884073
it's not just that though-we can put different measuring devices to work on the same thing and see them come up with related results.

the only possible conclusion that isn't these devices interacting with reality is that we are trapped in a situation where we are fed false information deliberately,which is a very complex hypothesis we have no evidence for.

You can care about that if you want, but i think it's stupid.
>>
>>11884085
IQ of 167. Measured with IRL tests over a span of 10 weeks; no meme online tests.

File: obama.jpg (175 KB, 681x383)
175 KB JPG
None of this lockdown stuff happened during Swine flu, why did everyone shut everything down over Corona? Did Obama have a better pandemic response?
>>
>>11885218
See the article here >>11885180, the reasons that scientists increased the 2009 death toll is because they factored in pneumonia deaths.
Is coronavirus the only respiratory illness that causes changes in the lungs in asymptomatic cases? I know "ground glass" (bizarrely fear-inducing terminology) is an existing symptom of various lung diseases, not just corona. It's true that we won't know how significant it is for at least a decade, but this is also true of swine flu, it's true of literally everything. I find it irresponsible of health officials / journalists to say that people have the potential to be affected for years. It's way way too early to even have indications that this is true.
>>
>>11885241
Citation needed
>>
Man I wish I knew the answer to this.
>>
>>11885257
You can look at statistics from the CDC for both influenza and pneumonia deaths (though since 2013 they lump them together, so you can only see the total). 2009 was not exceptional. I can't judge at the world level, but for the USA, SARS-CoV-2 and H1N1 have not been comparable in terms of pneumonia deaths. An average pneumonia year is 50k deaths, and a bad pneumonia year is around 75k deaths. We're already at 125k pneumonia deaths this year and November and December should add to that.

https://www.statista.com/statistics/184574/deaths-by-influenza-and-pneumonia-in-the-us-since-1950/
https://www.livestories.com/statistics/us-influenza-flu-pneumonia-deaths-mortality

>Is coronavirus the only respiratory illness that causes changes in the lungs in asymptomatic cases?
The problem is they tested some of these asymptomatic cases early on (family members of known infected people) and observed the lungs before and after. It's unlikely there was another cause, though not impossible.
>>
>>11885258
>I don't want to Google it because I'm afraid
https://www.wbur.org/onpoint/2020/06/25/whats-it-like-to-recover-from-covid-19
https://www.telegraph.co.uk/global-health/science-and-disease/revealed-long-term-severe-effects-covid-19-can-go-months/
https://www.bbc.com/future/article/20200622-the-long-term-effects-of-covid-19-infection
https://www.statcan.gc.ca/eng/survey/household/5323-covid-series
Not to mention the damage done by being ventilated for longer periods of time.
Goddammit I hate fucking idiots like you. There's a dentist who's got dementia from it, a team of divers who all got it and will not dive again or their lungs explode, marathon runners who can barely walk 300m after months, etc etc.

What does space really look like, without all the photo enhancement and weird tricks?

If you were floating out there what would you see around you
>>
>>11884843
>Haven't you guys ever been outside on a cloudless, moonless night in a rural area before?
I have and the milky way appears grayish.
>>
>>11884887
You might need to check your eyes, because I saw a brilliantly bright tapestry of thousands and thousands of stars closely packed together.
>>
>>11884887
go stargazing in the desert on a new moon
>>
>>11884967
>You might need to check your eyes, because I saw a brilliantly bright tapestry of thousands and thousands of stars closely packed together.
I'm talking about the band of the milky way.
>>
>>11884746
No, your analysis is correct. People completely underestimate distances when it comes to space. The magellanic clouds are near and they're already faint. The andromeda galaxy is roughly 2 million years away, a quite big galaxy actually, and except for its center, hardly possible to see. You could see the milky way from 100 thousand light years away and you could even recognize its features but it's nowhere as bright as often assumed.

I’ve been meaning to purchase one for my home lab, but I’m not sure which one is a good and cost efficient model that I could purchase online. I’ve check the models of the ones at the lab I work at but one is too old and can’t find it and the other one is crazy expensive. I even say an electronic one on amazon under \$60 but it was too good to be true.
>>
>https://www.amazon.ca/OMAX-40X-2000X-Binocular-Microscope-Mechanical/dp/B005TJ5CEG/ref=cm_cr_arp_d_product_top?ie=UTF8

This one works perfectly fine, work with DIN optics and has a x100 inmersion lens(also includes the oil) so you can see bacteria, it's the cheapest that I found with that objective and that was also binacular(binacular was very important for me, you get tired of winking all the time and gives more field of view, which helps with finding objects)
>>
File: 158456467560.gif (1.7 MB, 500x500)
1.7 MB GIF
>>11883397
>>11883400
>>11883401
>>11883406
>>11883413
>>11883418
>>11883422
>>11883425
>>11883441
based
Thank you, good sir!
>>
Pass on AMscope, it's cheap chinese shit. Most of the big 4 brands are also made in China but at least to better standards.
>>
>>11879857
Leica has good microscopes OP
https://www.leica-microsystems.com/products/
>>
>>11884521
So many options... not sure what to look at firsts

File: eymli.png (260 KB, 615x718)
260 KB PNG
>Does economics belong here?

I have taken up self study on economics. I took titles of all recommended books and articles off MIT OCW. My original intention in getting the textbooks was to find PDFs and pull original sources off of them and then weed out all of the textbook filler. Aside from inline examples there aren't sources. This isn't such a big problem. I noticed that later graduate courses really hinge on examining actual events, case studies, and articles. Big plus and they are already organized by topic. Seeing as the MIT textbooks do not provide what I seek, I am looking for an economics book dump. Math included is not necessary, but is also fine. Economic philosophy is a big plus as well, I have no clue of what to look for outside of pop econ.
>>
>>11838879
>value should
He was describing what value actually was, not what it should be in Das Kapital
Did you even finish the first chapter
>>
File: tetlock 2004.jpg (48 KB, 951x698)
48 KB JPG
Daily reminder economics is not a science, and even if it was, it would not be worth funding institutionally as
1) the predictive validity of dilettantes in the field is just as strong as experts
(pic related)
2) You make better return on investments if you treat experts in the field as anti-experts (invest in the ones they say are crap)
3) economists cannot reliably predict a recession more than 2 months in advance
https://onlinelibrary.wiley.com/doi/abs/10.1002/bdm.3960050306
4) The more qualified the academic, the less good they are at predicting outcomes in economics https://www.nber.org/papers/w22566
>>
>>11826965
Economic is not science. You should go back to >>>/biz/
>>
I'm starting to run-out of images
>>
>>11827115
Either that or BASIC ECONOMICS

Delete Post: [File Only] Style:
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]