[Boards: 3 / a / aco / adv / an / asp / b / biz / c / cgl / ck / cm / co / d / diy / e / fa / fit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mu / n / news / o / out / p / po / pol / qa / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vp / vr / w / wg / wsg / wsr / x / y] [Home]
Archived threads in /sci/ - Science & Math - 288. page
Images are sometimes not shown due to bandwidth/network issues. Refreshing the page usually helps.

File: Baby_diving.jpg (361 KB, 1048x587) Image search: [iqdb] [SauceNao] [Google]
361 KB,
Thoughts on the aquatic ape hypothesis?
>>
http://www.ted.com/talks/elaine_morgan_says_we_evolved_from_aquatic_apes?language=en

It'd be interesting an interesting discovery.
>>
It's a form of feminism, but not backed up with as much evidence as typical feminist arguments.

Anyway, it's patently false. If we were ever aquatic, we'd have a lot more hair than our evolutionary cousins, not less. We'd be bulky and round instead of all gangly. We're built to dissipate heat, not keep it in.
>>
The AAH has received little serious attention or acceptance from mainstream paleoanthropologists,[20][68][69][70] has been met with significant skepticism[70][71] and is not considered a strong scientific hypothesis.[20][5] The AAH does not appear to have passed the peer review process, and despite Morgan being praised by various scholars, none of her work has appeared in any academic journals of anthropology or related disciplines.[62] The AAH is thought by some anthropologists to be accepted readily by popular audiences, students and non-specialist scholars because of its...

File: .......jpg (77 KB, 1024x583) Image search: [iqdb] [SauceNao] [Google]
77 KB,
lets face it world wars has been the best thing that has happend to the human race.the amount off technology that we got from it is staggering. just think of intense the race of getting the best technology was after the wars. but at this point we have flattend out and moving very slowly forward. we need a ww3 to get our speed of evolving back on track.
>>
>>7646662
No, we would be even more technologically advanced and prosperous without the world wars. Prove me wrong.
>>
>>7646666
>>
>>7646666
Tech advances during the wars... gg izy.

File: serveimage.jpeg-fs8.png (35 KB, 1365x1024) Image search: [iqdb] [SauceNao] [Google]
35 KB,
What are the odds that The Patriots won 19 of their last 25 coin tosses, /sci/?

http://boston.cbslocal.com/2015/11/06/toucher-rich-explore-how-the-patriots-are-winning-coin-flips-at-impossible-rate/
>>
The same as the odds that they lose 6 of their coin tosses out of 25. I'm rusty on my babby probability, but here's a shot: There are 25C6 ways of losing 6 out of 25 coin tosses. There are 2^25 possible outcomes in 25 coin tosses. Hence, the following probability:

$\frac{\frac{25!}{6!19!}}{2^{25}}=\frac{177,110}{33554432}=0.00527$

If you want to know the odds that the Patriots got at LEAST 19 out of 25, you need to add in the probability of getting 25/25, 24/25, 23/25, 22/25, 21/25, and 20/25. That gives you:

$245505/33554432=0.0073166$
>>
File: fuckscilatex.png (11 KB, 260x107) Image search: [iqdb] [SauceNao] [Google]
11 KB, 260x107
>>7646715
I'm not sure wtf is up with /sci/'s LaTeX, so here's an image of what I intended on showing you.
>>
Here's a better question: what are the odds that *some* team wins 19/25 tosses? I bet it's better than even. And if you pick an arbitrary rolling window of 25 tosses, it's pretty much certain to happen eventually.

Your odds of winning the lottery are basically zero. But someone will win the lottery, and if not this week, then the next week or the one after. Same deal here, but on a smaller scale.

File: rain.jpg (711 KB, 1920x1200) Image search: [iqdb] [SauceNao] [Google]
711 KB,
Why do people like rain?

Is it the sound of the water impacting the roof?
Is it the low lighting?
Is it the acknowledgement of not being able to go outside?
>>
>>7646595
some kind of primal instinct that rewards you for being under shelter when the weather is bad. I don't think its too much more complicated than that
>>
usually a sign of low test
>>
>not being able to go outside

nigga walking around in the rain is great

File: math.jpg (249 KB, 1200x1200) Image search: [iqdb] [SauceNao] [Google]
249 KB,
I found some really old Maths textbooks in my local second-hand book shop recently. Some go back as far as the 1920s. They seem to explain Maths better to me than the newer textbooks, but they lack the colour of newer textbooks. Colour helps me remember stuff better.

So, what's better /sci/: Older or newer textbooks.
>>
>>7646582
Generally older because they didn't fuck around with the explanations (plus they were shorter because of that) but if you need the fancy shit, you need the fancy shit.

>>
>>7646582
old textbooks. They were good at explaining concepts and how to solve it. They didn't go off in a tangent of some stupid story you don't need to know. New textbooks put pretty pictures and useless explanations without explaining what the author is doing and why its solved this way.
>>
>>7646582
Old text books. Not only old text books but old scientific movies explain shit in a very crystal clear manner.

File: 643409_5514718.jpg (1 MB, 3200x2400) Image search: [iqdb] [SauceNao] [Google]
1 MB,
Who here uses substances to increase mental performance?

I have antidepressants, 10mg/day generic prozac, that I gotta take or I just lie in bed hating myself all day. Although it feels like when I'm depressed I am more creative, better at playing piano, finding unique solutions etc. I also take caffeine and occasionally kratom which is pretty bomb for banging out a massive study session.
>>
Try not being a faggot.
>>
>>7646415
>Who here uses substances to increase mental performance?
I take antidepressants, neuroleptics and drink alcohol.
>>
I do a little coke on the weekend

File: 1445659830607.png (583 KB, 680x689) Image search: [iqdb] [SauceNao] [Google]
583 KB,
Does total net Work done = the total change in Mechanical Energy?
>>
W=ΔKE=1/2(mv^2f)-1/2(mv^2i)
>>
>mfw people can't do basic high school physics
>>
>>7646402
>what is conservation of energy

File: 1431120333793.jpg (170 KB, 750x1334) Image search: [iqdb] [SauceNao] [Google]
170 KB,
I'm willing to spend whatever time it takes, and start right from the basics - the story is I've failed Math at a high school level twice, and I'm coming back to another local highschool to redo Math specifically

The thing is, I can never get interested in it in class because my base knowledge is so lacking, so most of the things they teach aren't intuitive to me

Pls help me succeed like Asian students /sci/
>>
>>7646330

At this point I just need to get perfect algebra, trigonometry and coordinate geometry at high school level and maybe a bit more advanced

Any ideas where I can start?
>>
>>
>>7646339

What I'm saying is, it'd be nice if you could recommend a textbook that covers these basics in a grounds up way, or something along those lines.

I don't know much about Math, but what I do know is that the textbooks we're provided with are not optimal for learning Mathematics.

ITT you must defend yourself against a swarm of killer bees. Please select a weapon and describe how you plan to survive. Hope you niggers get creative today. Goodluck.

>NO ENCLOSURES OF ANY KIND ALLOWED (suits, houses, vehicles, underwater, etc.)!!!
>>
>>7646324
Hard mode: once an answer is posted other anons are not allowed to use the same strategy.
>>
>>7646324
Bee-killing poison gas
>>
>>7646324
weapon : smoke blower
plan : blow smoke all day erday

File: animu.png (457 KB, 792x792) Image search: [iqdb] [SauceNao] [Google]
457 KB,
Why is algebraic topology so hard?
>>
because you like anime
>>
>>7646313
this
>>
>>7646348
I don't, I just like the picture.

File: pigs.jpg (130 KB, 639x426) Image search: [iqdb] [SauceNao] [Google]
130 KB,
I grew up next to a slaughterhouse and was sometimes woken up by shrieks of pigs who were about to be killed. Can't we just gas animals (with helium) instead or is that technically impossible? Would be more animal-friendly and at least and also less distressing for the workers I guess.
>>
>>7646240
Helium definitely not, it would be completely impractical. You probably could asphyxiate them with high percent nitrogen air mixtures, but that would also be extraordinarily expensive (just in terms of time required making vacuum sealed rooms), and it may affect the quality of the meat. Anything other than nitrogen would be too expensive to be considered.
>>
Helium is expensive and it has more important uses than in animal slaughter, Mr. Sad Frog.
>>
>>7646240
sleep tight porker

Is the placebo effect really as powerful as people claim it is? If so, can doctors prescribe you sugar pills without telling you?

pic unrelated
>>
File: 1421041579238.png (98 KB, 594x315) Image search: [iqdb] [SauceNao] [Google]
98 KB, 594x315
Sure. Its even more potent if you apply homeopathic principals. So one sugar molecule will literally cure all cancers. Big farma of course doesn't want you to know this secret.
>>
>>7646196
>Is the placebo effect really as powerful as people claim it is?

Depends on how powerful "they" say it is. It's important to remember that just because you feel better doesn't mean you are better.

>If so, can doctors prescribe you sugar pills without telling you?

No because that's hilariously unethical.
>>
Yes it is very powerful you can research that yourself. And no doctors can't legally give you a sugar pill. Doctors don't actually make the medication they get it from a supplier. So unless the doctor is ordering sugar pills (which looks shady) they are giving you exactly what they ordered from the supplier

Who is at the forefront of the development of AI? Soon finished my master's degree, and so I want to dedicate my whole life to science, I would like to get the PhD where I will work or nearby. I am now considering the option of German, TUM, but it is worth to have a fallback.
>>
>>7646100
The forefront is at Google Deepmind. They are in London.

I don't know if you'll get there though: they're hiring, but you basically need to be a genius to get in.
>>
>>7646150
>>
>>7646150
IBM or Google. Watson, Deepmind and BostonDynamics all look promising.

File: muhRechnungBesser.jpg (38 KB, 1033x198) Image search: [iqdb] [SauceNao] [Google]
38 KB,
I came up with this and want to prove it but I dont know how, any idea?
>>
>>7646074
Wouldn't it just be how you came up with it worked backward?
>>
[eqn]3 \sum_{x=0}^y 3^x = \sum_{x=1}^{y+1} 3^x = \sum_{x=0}^y 3^x + 3^{y+1} -1[/eqn]
Therefore
[eqn] 2 \sum_{x = 0}^y 3^x = 3^{y+1}-1[/eqn]
>>
>$y \in \mathbb{N}$
>$y > 0$

why...

File: 1446954718952.jpg (541 KB, 3400x2400) Image search: [iqdb] [SauceNao] [Google]
541 KB,
Anyone else get anxiety looking at pictures of large planets/space? I don't have a fear of heights but this stuff is really spooky to me.

ITT post space.
>>
>>7646047
what a pussy faggot you are

"ooooh I get anxiety looking at space because big and we small xd"

fuck off, you should have posted this in a cringe thread
>>
>>7646047
Me too. It's just so creepy, a massive ball hanging in nothing. Uranus is creepiest. So featureless, just sitting there. "WHAT DO YOU WANT????"

"Uranus"

:S
>>
>>7646047
>>7646055
Would be more spooky if the opposite was the case (human not able to see in space or no big objects in space)
givs me a safe feeling, cause one can see that everything is going well since billions of years and we can just do our shit like post on /sci/

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