Archived threads in /sci/ - Science & Math - 221. page
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.
Given that the universe is infinite in time, does that mean that anything that can happen has happened, and will happen?
DUDE
>>7997088
Nope.
>>7997088
Yes, that's the definition of infinite.
Is this a /sci/ approved show?
It's pretty good to watch while high, but the science is questionable at best.
>>7994701
>but the science is questionable at best
I agree with this. There was an episode about the hypothesis that the universe is "alive", as in an organism.
How do I integrate this /sci/?
I've tried integration by parts but end up with even uglier integrals containing arctan (x)
I also tried substitution but couldn't find an appropriate term to substitute
Pls help
Partial fraction decomposition.
Trig substitution. The -2x/(x^2+1) integrates to tangent
>>7999051
What exactly would you substitute? I tried using the fact that 1/(1+x^2) integrates to arctan(x) with integration by parts but that left me with even uglier integrals
The science of procrastination?
Oh God help.
>>7998456
Avoiding negative stimuli /thread
>>7998464
Define negative stimuli
>>7998456
Block websites that make you procrastinate (eg. 4chang) in your hosts file. Uninstall or at least block access privileges of vidya. Do not attempt to study where you live or sleep, instead go to uni or the library. Eat healthy, drink green tea, sleep 7-8 hours a night, masturbate less (once a week is OK).
Why does water taste different when I've drunk alcohol the preceding night?
>>7996617
Things your body need taste better. That's why preggos crave weird things and some people eat dirt.
"Hunger is the best sauce" so they say.
>/sci/ style
Some kind of neural response to avoiding a dehydration situation?
>>7996617
Because you're dehydrated
Hey, IQ fags, if pic related means I'm smart, why do I feel so dumb?
>>7996303
Because online IQ tests mean close to nothing. However you're probably not stupid. Dunning-Krueger effect and all.
>>7996303
Because if you genuinely took an online IQ test and think it means anything you really are dumb
>>7996309
>>7996312
I am aware that it's not a real IQ test as a real IQ test consists of several different types of tests, which aim to measure reasoning, spatial awareness, short term memory, etc. Your overall IQ score is determined by how well you did on all of the tests.
The test in the OP was designed by two mensa fags to specifically imitate the spatial reasoning tests that are present in a real IQ test. From what I've heard, it's pretty accurate in that regard.
Hello sci/
I'm not very educated when it comes to the sciences. I did well at my academy, and took rudimentary courses in college. My passion in life is reading and writing. The latter has taken some of my time lately.
I want to write a story set in a high fantasy universe - highly original I know. I wanted to have a lot of the subject matter be sound to the average reader however: iron is iron. You forge it to make rudimentary steel, copper with a little tin makes bronze, and so on. I do not want any kind of wacky, new metal that trumps them all.
I...
Comment too long. Click here to view the full text.
https://www.youtube.com/watch?v=8E6TzT0eCYs
https://www.youtube.com/watch?v=vyUkYJeZtW4
I don't know much about the actual metallurgy but these videos should help you avoid the most common mistakes.
Also, be sure you don't just rewrite the Lord of the Rings.
>>7992775
Have a sword made of tungsten carbide just because
>>7992919
Thank you very much, they will help.
That's exactly what I am trying to not do. I want the universe to feel original despite having some elements one cannot avoid but also use like Tolkien did.
>>7992927
Do you have any pictures of it? I'm interested
Is Cern completely useless? Billions of dollars wasted, finding subatomic particles that are completely useless. They just sit in a dictionary.
>>7991827
PET scans are an application of antiparticles. Would be pretty cool if some physicists here gave other technological applications of subatomic physics.
>>7991827
Pretty much.
It keeps thousands of scientists from unemployment though.
Is there any reason we shouldn't legalise weed?
t. never smoked before
>>7991043
Not any rational ones, no. But the government has a lot of reasons, mostly fiscal.
>>7991043
Do you really want a second tobacco industry?
Legalizing the drug itself is okay, but I think we should maintain a ban on commercial sale. Let people grow it themselves if they really want it that badly.
>>7991046
Like what? Instead of wasting tons of money cracking down on a drug that isn't even dangerous, they could increase tax revenue. There's no reason not to even if you hate weed.
>tfw fell for the university meme
>tfw literally everything you are studying/want to know is already on the internet
>tfw you learn more from the internet than from your own useless teachers(not all of them, but most)
What went so horribly wrong?
>>7990904
You majored in CS
If you learned chemistry online only, you would be a shit chemist.
Lab experience and an instructor to direct your learning and destroy your confirmation bias of your own work is seriously important.
>>7990937
Honestly anon, why are chemist so undervalued in society and the workforce. I know the chemistry meme but chemistry can be very complex and fundamental to the world that we live in. Have we just hit the ceiling of world changing chemical discovery?
Can someone explain to me intuitively what exactly is going on when we integrate?
I understand that it's used for finding the areas under graphs, and I know the method, but what am I actually computing? With differentiation, we're finding the gradient at specific points using a line which has a difference of 0 between our point and another arbitrary point. I don't, however, understand what integration actually is.
>>7989422
Youre summing infinitely many rectangles with height H and width lim x --> inf for 1/x
>>7989422
You are taking the sum of "thin slivers" under the function. You then take the limit of the width of those slivers as they go to an infinitesimal width, dx or whatever.
Its just essentially an antiderivative. If you know derivatives you can understand integrals. Id you take physics youll see it clearly
Why is there such little discussion about slugs on /sci/ ?
>>7989230
I read that snails evolved way sooner than slugs did.
>>7989244
Slugs have always been a bit slow
SpaceX rocket launch in about 3:45 hours, they are attempting a landing again
20:43:00 UTC
4:43:00PM Eastern
1:43:00PM Pacific
>CRS-8 will be the first CRS mission to the ISS since the ill-fated CRS-7, and stowed in Dragon's trunk will be BEAM; a small Bigelow inflatable module to be attached to the station. The first stage, provided the barge is go to support a landing, will attempt to land downrange on OCISLY
Streams:
[NASA TV] http://nasatv-lh.akamaihd.net/i/NASA_101@319270/master.m3u8
[SpaceX Technical] https://www.youtube.com/watch?v=sh8V0COrrzE
[SpaceX Full/Hosted] https://www.youtube.com/watch?v=7pUAydjne5M
Mods sticky this
>>7988214
2 hours and 30 minutes.
>>7988214
A lot like Formula One, I only watch SpaceX rocket launches for the crashes.
>>7988214
>Bigelow inflatable module to be attached to the station
Nice. Hope all works well
I'm asking the smart folks here at at /sci/ for an answer to the age old question. I honestly don't have any idea.
>>7987398
Much the same as they do today, to be honest.
mexican
Guessing that they will be cyborgs
http://www.nature.com/mp/journal/vaop/ncurrent/abs/mp201645a.html
People’s differences in cognitive functions are partly heritable and are associated with important life outcomes. Previous genome-wide association (GWA) studies of cognitive functions have found evidence for polygenic effects yet, to date, there are few replicated genetic associations. Here we use data from the UK Biobank sample to investigate the genetic contributions to variation in tests of three cognitive functions and in educational attainment. GWA analyses were performed for verbal–numerical reasoning (N=36035), memory (N=112067), reaction time (N=111483) and for the attainment of a college or a university degree (N=111114). We report genome-wide significant single-nucleotide polymorphism (SNP)-based associations in 20 genomic regions, and significant gene-based findings in 46 regions. These include findings in the ATXN2, CYP2DG, APBA1 and CADM2 genes. We report replication of these hits in published GWA studies of cognitive function, educational attainment and childhood intelligence. There is also replication, in UK Biobank, of SNP hits reported previously in GWA studies of educational attainment and cognitive function. GCTA-GREML analyses, using common SNPs (minor allele frequency>0.01), indicated significant SNP-based heritabilities of 31% (s.e.m.=1.8%) for verbal–numerical reasoning, 5% (s.e.m.=0.6%) for memory, 11% (s.e.m.=0.6%) for reaction time and 21% (s.e.m.=0.6%) for educational attainment. Polygenic score analyses indicate that up to 5% of the variance in cognitive test scores can be predicted in an independent cohort. The genomic regions identified include several novel loci, some of which have been associated with intracranial volume, neurodegeneration, Alzheimer’s disease and schizophrenia.
>>7987183
Genetics is the finger pointing to the moon. Don't mistake it for the moon itself.
>>7987186
The glass is only imaginary if you imagine it.
Look, I can post retarded 2deep4u trash too.
> genetics matter
> cognitive abilities are inherited
another /pol/ thread ?
