[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 / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /vp / vr / w / wg / wsg / wsr / x / y] [Home]
Archived threads in /sci/ - Science & Math - 162. page
Images are sometimes not shown due to bandwidth/network issues. Refreshing the page usually helps.

File: cuntface.jpg (59 KB, 850x400) Image search: [iqdb] [SauceNao] [Google]
59 KB,
Are virtual particles physically real and actually popping in and out of existence or are they just mathematical fictions used in calculations?
>>
>>8320273
In classical field theory people couldn't decide whether fields were real separate things or just interactions between particles, now with quantum theory you have people arguing about many-worlds and you expect us to know whether virtual particles are real?
>>
http://metaphysicist.com/puzzles/many/
>>
File: 1472933623430.jpg (82 KB, 797x423) Image search: [iqdb] [SauceNao] [Google]
82 KB, 797x423
>>8320273

File: _20160903_190043.jpg (17 KB, 648x227) Image search: [iqdb] [SauceNao] [Google]
17 KB,
Sup /sci/ i have this really basic question in my exam guide, it should be really easy but o think the teacher wrote it wrong but maybe im just wrong so try to solve it guys ill post the answer in 15 minutes pld post the procedure btw
>>
[eqn]
3 \left( 24x^{2} + 26x - 15 \right)
[/eqn]
>>
>>8320274
I arrived there too and got it wrong btw you have to solve for x
>>
File: ffff.png (4 KB, 285x229) Image search: [iqdb] [SauceNao] [Google]
4 KB, 285x229

File: 20160820_235442.jpg (3 MB, 2340x2988) Image search: [iqdb] [SauceNao] [Google]
3 MB,
I'm on a personal journey to discover the language of the universe, mainly how to deciper Einstein's theory of relativity. Assuming that I begin with calculus, what more advanced mathematics would I have to aquire to understand the theory?
>>
>>8320250
go to bed tim
and lay off the vape
>>
>>8320258
Come on man
>>
>>8320250
I want to pass this knowledge down to my newborn son, so he can be a the next paul dirac

File: infographic_supermeat.png (158 KB, 695x391) Image search: [iqdb] [SauceNao] [Google]
158 KB,
...
>>
that's not kosher
>>
>>8320236

it's for the goys
>>
>jewish food

thanks no thanks

File: dasf.png (2 KB, 210x50) Image search: [iqdb] [SauceNao] [Google]
2 KB,
this is true?
>>
>>8320200
what the fuck? this is elementary shit
>>
it takes less than one minute to prove this is true
you jackass
>>
>>8320200
when n=1 only

bottom row, n+n=n+1
therefore n=1 is the only solution. Check that it works for the top row, and 1+(1+1)=1+2

File: Evariste Galois.jpg (212 KB, 792x1024) Image search: [iqdb] [SauceNao] [Google]
212 KB,
Is it only about how many hours of work you put in or is it something else too? Does it matter what schools I go to?
>>
>How do I become the greatest Mathematician ever?
Why do you wanna become a worthless pile of garbage ?
>>
>>8320156
Galois looks like he has some prime tier boipussy.
>>
>>8320156
>Is it only about how many hours of work you put in or is it something else too?
Do mathematics 16 hours a day for ten years. Don't forget about diet, sleep and physical exercise.

File: severeinternetretardation.png (945 KB, 1356x872) Image search: [iqdb] [SauceNao] [Google]
945 KB,
> have two ropes, a) and b)
> each rope burns down in exactly 60 minutes, but not necessarily in a steady manner

Measure 15 minutes of time by using the two ropes and a zippo. If you cannot do it, go to sleep immediately (source: I have a phd in severe internet retardation.)
>>
Light one end of one rope then light the other from both sides. After the one lit from both sides has burned through, 30 mins will have elapsed. Therefore, the other rope will have 30 mins left to burn so light it from the other side and it will take 15 mins to finish off.
>>
>>8320141
you are allowed to stay awake
>>
>>8320145
Th-thank you s-s-senpai.

File: Vat.jpg (75 KB, 900x506) Image search: [iqdb] [SauceNao] [Google]
75 KB,
From what i can get from the usual process a baby must grow within an amniotic fluid sac (The amniotic sac and its filling provide a liquid that surrounds and cushions the fetus. So the amniotic sac is optional.) at about 98 degrees F. The baby must also have a nutrient tube of some sort (which is arguably the most important part). Wouldn't mimicking most of these things be somewhat easy? why cant we grow a human or an animal in a vat? I would imagine doing so would have been possible already but im no biologist so please enlighten me. Is it cause of moral and cult related...
>>
>>8320012
Its an ethical and moral issue of growing humans in vats.
>>
>>8320015
really that is whats stopping us? i thought it would be something more technical....
>>
They just figured out how to keep a simple embryo growing to the point where it would attach to the uterine wall. It's not easy at all, and all the research essential to be able to do it is currently illegal.

File: A Meme.jpg (7 KB, 142x158) Image search: [iqdb] [SauceNao] [Google]
7 KB,
Do you think we could use nanotechnology to essentially "widdle" the brain down to a more ideal form i.e. removing emotions like pain, boredom, sadness, depression, and anger. If we could move away from these necessary evils with rational thinking, life could be more bearable.
>>
>>8319998
Nah do it like the vulcans, get rid of emotions with culture.
>>
If you accept the possibility of lost of emmotions, it would be better to just create a self-replicating and self-reparating AI to substitute the human species. The problem is that humans are only motivated to progress and knowledge due to curiosity, wich is emmotional. But I don't personally think it is bad to gradually substitute the human species with machines, we just need to make them in a way that they keep looking for progress and self-preservation.
>>
>>8320027
nigga I aint trying to die if living forever in peace is an option

114 KB,
>your cells will never have cell walls

Why do fungi, bacteria, and plants make it look so easy?!
>>
>>8319963
Fungi have tiny dicks
>>
>>8319963
>you will never be as rigid as a tree
>>
>>8319963
Well guess what? Because we don't have cell walls we can fuck fungi, bacteria, and plants' shit up without fucking ourselves up.

File: 1472810335553.jpg (164 KB, 1080x1920) Image search: [iqdb] [SauceNao] [Google]
164 KB,
What are the women like in you field?
>>
File: 1409359401617.jpg (165 KB, 1920x1080) Image search: [iqdb] [SauceNao] [Google]
165 KB, 1920x1080
What women?

t. CS fag
>>
>went to a summer graduate school in Italy
>not a single bagina
>>
do traps count :3

File: Selection_003.png (43 KB, 1279x168) Image search: [iqdb] [SauceNao] [Google]
43 KB,
you could have prevented this.
>>
File: 1373390517645.jpg (87 KB, 900x1200) Image search: [iqdb] [SauceNao] [Google]
87 KB, 900x1200
You didn't open any funny tabs like "gay sex" for your screenshot. Do you even meme, son?
>>
>>8319937
what is a tex post
>>
>>8319940
hmm it didn't do shit.

File: asdf.jpg (14 KB, 480x360) Image search: [iqdb] [SauceNao] [Google]
14 KB,
Is being a professor actually as bad as people say it is?
>>
no it's worse.
>>
File: 1419114118855.jpg (76 KB, 500x345) Image search: [iqdb] [SauceNao] [Google]
76 KB, 500x345
those who cant do teach
>>
>>8319925
And those who can't teach do.

File: moon.jpg (701 KB, 1004x1181) Image search: [iqdb] [SauceNao] [Google]
701 KB,
The moon is a planet. Despite what bs definition the iau makes, that giant ass world there is a planet. If it orbited the sun directly it would be another planet called Luna.
>>
Something as small as the moon would eventually trail another planet or a giant like jupiter and faill into their orbital range and start orbiting them instead.

You and your shitty moon has no chance.
>>
>>8319826
>>Something as small as the moon
>nearly the size of mercury
>>
>>8319819
Anything with hydrostatic equilibrium I call a planet (except a star)

File: 8ysgOTt.jpg (260 KB, 862x2048) Image search: [iqdb] [SauceNao] [Google]
260 KB,
As far as subject matter goes, and curriculum, what are the differences between pure and applied mathematics?
>>
File: 1432574401824.jpg (2 MB, 1400x1603) Image search: [iqdb] [SauceNao] [Google]
2 MB, 1400x1603
Pure math = Intellectual masturbation

Applied math = The stuff that actually matters.
>>
>>8319666
Applied math is to pure math as experimental physics is to theoretical physics.
Pure math comes up with new and interesting ideas and applied mathematicians come up with some mundane way to apply it to the real world.
Creative vs practical. They're basically the engineers of math.
>>
>>8319687
Engineering literally means creating

File: 1472276170907.jpg (141 KB, 1086x753) Image search: [iqdb] [SauceNao] [Google]
141 KB,
What am I missing here?
This is silly, but I can't disprove it.
>>
>>8319661

>the tubes on the left side have a bigger volume (because of gravity pulling the lids downward)

No, dipshit. Gravity is pulling down on every part of the entire structure uniformly. So everything would balance perfectly, and the wheel would not rotate.
>>
>>8319708
still don't get it.
>>
>>8319732
But did you do all those things? You didn't answer my question.

File: 1468704699393.png (859 B, 153x71) Image search: [iqdb] [SauceNao] [Google]
859 B,
Can society both within STEM maintain morality (I.e. "has science gone to far" meme), and achieve empirical data with low error? Should we limit what science should and shouldn't do? I personally believe that scientific progress shouldn't be restricted at all, but what does the rest of /sci/ think?
>>
>>8319473
Anyone who believes that science should have unlimited freedoms with regard to ethical and moral concerns is an autistic freak. Science is nowhere near as important as empathy and causing pain or misfortune for scientific research is, in my "humble opinion", is a crime against not only humanity but against the very essence of scientific research.
>>
I think races shouldn't be researched

There's nothing to gain from it
>>
>>8319473
There's plenty of ethical shit to research, no need to do ill-advised stuff

File: after1000hoursinpaint.jpg (24 KB, 670x377) Image search: [iqdb] [SauceNao] [Google]
24 KB,
Let's get another one of these going.

Just found this guy's channel today, he's got some neat content, I liked this one a lot:

Favorite channel right now, Applied Science. Some of the work this guy does blows my mind. This video is my favorite.

>>
>>
>>8319422
I like vsauce its basically all I watch.
>>
>>8319450
I love Cody's lab

File: Fracking_Graphic_t670.jpg (42 KB, 670x609) Image search: [iqdb] [SauceNao] [Google]
42 KB,
Is fracking causing earthquakes in Oklahoma? searching the web gives conflicted results. It seems a lot of the locals are blaming "waste-water" and directly saying fracking is not the culprit
>>
http://earthquake.usgs.gov/research/induced/

As part of the fracking process, waste water is created which needs to be disposed of in separate deep wells. It is these deep wells that are correlated (likely causal) with the earthquakes.

However, these earthquakes are large enough to be felt but very rarely cause damage. So it doesn't seem like a big deal.
>>
Yea. It's fracking retarded
>>
File: 45645.png (172 KB, 614x677) Image search: [iqdb] [SauceNao] [Google]
172 KB, 614x677
>>8319420
Yes, they basically said that very thing and started banning fracking there.

http://earthquaketrack.com/p/united-states/oklahoma/recent

Oklahoma, United States has had: (M1.5 or greater)

15 earthquakes today
36 earthquakes in the past 7 days
114 earthquakes in the past month
2,506 earthquakes in the past year

Pic from:
http://earthquakes.ok.gov/what-we-know/earthquake-map/

>>8320337
>However,...

File: 434635.jpg (18 KB, 772x402) Image search: [iqdb] [SauceNao] [Google]
18 KB,
there is no such thing called gravity. the water level is at the same point at everywhere at the planet so things just go up or down from it based on their thickness. the water is 0 and other things are + or - something.
>>
>>8319408
>things just go up or down from it based on their thickness
>>8319408
Then why fat people float? Checkmate atheists.
>>
>>8319413
fat people have alot fat which is lighter than water. so that is perfectly right they float. a skeleton would sink.
>>
File: 34342.jpg (37 KB, 772x402) Image search: [iqdb] [SauceNao] [Google]
37 KB, 772x402
also a plane can fly because it moves away the air with its motors when flying creating nothing for sometime under its wings and body. the wings help it to glide but not to fly because they dont remove all the air.

File: 1464245096282.png (254 KB, 1739x1446) Image search: [iqdb] [SauceNao] [Google]
254 KB,
/sci/, what's the best calculator for high school chemistry?
>>
>>8319274
ti-84
>>
>>8319275
>not rpn

trash
>>
underageb&

File: marriage.jpg (51 KB, 640x427) Image search: [iqdb] [SauceNao] [Google]
51 KB,
Is there a correlation between having a lifetime partner and being successful researcher?
I can't handle romantic shit, or pretty much anything that has to do with other people.
I don't think I can raise a kid either.
I just don't want to marry in general.
But when I look around, every successful person in academy that I know is already married and has a content life.
>>
>>8319249
Define 'successful'
>>
>>8319253
The term is broad, but what I meant as 'successful' can be translated to have a nice track record in researching, i.e. has an ass load of papers (heavily cited by other researchers), is in the steering committee of a subfield/field, work on big projects, etc.
>>
I think having someone that cooks for you when you work really helps.

Can someone explain pic-related to me? It's about the band-dispersion in the brillouin zones.
Like I don't get what this graph represents, besides there's a bandgap due to Pauli exclusion
I assume k is the wavevector and analagous to momentum but then why at 0, 2pi, 4pi etc is the energy 0? What does it represent?
Is this electron-wave function just 0 because of muh boundary conditions? Also at every periodic (2pi, 4pi...) a new wave starts that shoots off to a very large energy...

I hope someone with a decent...
>>
>>8319082
Wish I could help you OP. I studied this stuff like 3 years ago and have long forgotten it.

You are trying to represent a lattice structure in some way where the distance between each atom is 'a' length apart from its neighbor.

Sorry OP.
>>
>>8319149
yeah exactly, only this is the reciprocal or something
and wow I'm amazed that you've forgotten it, did you continue in physics or did u go into a different direction?
>>
File: wavevector.jpg (21 KB, 374x616) Image search: [iqdb] [SauceNao] [Google]
21 KB, 374x616
>>8319082
Yes k is the wavevector, its absolute value represents the inverse of the spatial periodicity of your wave (by a factor 2pi).
So k = 0 or 2pi/a represents a uniform shift of your whole lattice in one direction. In other word, fucking nothing, which is why the energy is 0.
k = pi/a is the maximum deformation of adjacent nodes of your lattice

see pic related

File: Sam Harris.jpg (715 KB, 3500x2207) Image search: [iqdb] [SauceNao] [Google]
715 KB,
What does /sci/ think of Sam Harris ?
>>
File: 1464543363121.jpg (739 KB, 1500x1000) Image search: [iqdb] [SauceNao] [Google]
739 KB, 1500x1000
I don't know if this thread was a bait, but you probably mean Ben Stiller, the neuroscientist. Sam Harris is an actor.
>>
>>8319083
more a signer, than a actor
https://en.wikipedia.org/wiki/Sam_Harris_(singer)
>>
>>8319083
You're talking about Sam Hyde. Sam Harris is a white supremacist mass shooter.

File: Must remember.jpg (28 KB, 300x229) Image search: [iqdb] [SauceNao] [Google]
28 KB,
Have you people been part of school that rely their education almost entirely on memorization and recalling that memorized information, instead of finding logical patterns and actually making you smarter?

Most of you have for sure bullshitted through physic and math exams by memorizing equations without actually knowing rat's ass about the topic, and others, like chemistry, history etc.

Should we end this cycle of ignorance, computers are for memorization mostly, shouldn't we be made to learn how to think like a creator of computers?
>>
Yeah, I did that for PDEs, we used Strauss' textbook and it sucks ass, my lecturer was great but it wasn't enough. I 3.5'd without really knowing anything. Revisiting the subject now and it's becoming clearer since I learned more analysis. Generally I avoid it unless it's a special case.
>>
Philosophy is already considered a useless meme subject, trying to introduce something like logic classes would be considered a joke and since schools are literally labor training facilities for our corporate overlords it would never be approved.
>>
>>8318993
>math exams by memorizing equations

Nigga what? See pic related. It was a problem in the last exam I took. Let me see you try to plug and chug your way out of that one.

You have to prove that
$\frac{BD}{CD} = \frac{BA}{CA}$

The only hypothesis you have is that the ray AD bisects the angle A and that the point D is in the segment BC. Also the line CE is parallel to the line AD

Give it a try. Apply in your 'formulas' and then please staple...

What the fuck are these? Especially the last one that beats like a heart and shifting colors

>>
Looks interesting, whatever it is. They should consider getting better cameras.
>>
>>8318897
>What the fuck are these? Especially the last one that beats like a heart and shifting colors
>

those are the souls of aborted babies, beating their little wings as they fly to heaven
>>
sky lanterns

This budget devouring tincan is the reason NASA can't send people to the moon let alone mars.
also
>international
>>
No C nor D only H.
>>
>>8318887
Stop all space exploration by humans. Only use robots. Never send another human being up into space for any reason. Only use robots to mine near Earth asteroids. Let companies do this, not governments.

Use freed up resources for humanity on Earth were it isn't being wasted.
>>
>>8318887
>This budget devouring tincan is the reason NASA can't send people to the moon let alone mars.
You have that backwards.

The fact that NASA can't accomplish anything with humans in space is the reason why even a tin can is "budget-devouring". Orbital accomodations for 6 should not cost tens of billions of dollars to build, then billions of dollars per year to maintain.

NASA lacks the organizational competence and will to guard its resources and see that...

File: anal-authority.jpg (332 KB, 1280x1280) Image search: [iqdb] [SauceNao] [Google]
332 KB,
Why do people talk about a field that they have no experience in?
>>
File: 1424598410581.jpg (776 KB, 1536x1920) Image search: [iqdb] [SauceNao] [Google]
776 KB, 1536x1920
When you know a little, you think you know a lot.

When you know medium amount, you think you know a little.

When you know a lot, you think you know medium amount.
>>
>>8318884
Because le ebin millenial debate culture and "expertise is an argument by authority fallacy :^)" meme
>>
>>8318884

Freedom of speech.

File: 6236470_orig.jpg (210 KB, 900x440) Image search: [iqdb] [SauceNao] [Google]
210 KB,
What's difference between polytechnic college (5 years), and Bachelors (3years) + Masters (2 years) in normal college?

Are they the same level of engineer?
>>
>>8318804
>Are they the same level of engineer?
Hell naw.
Polytechnique is competitive as fuck. It's the top of the top for French engineers.
>>
>>8318804
Polytechnique was specifically designed to train the future military engineers.
Today, you don't have to work for the state or the military anymore, although the first year is essentially military training, that some student can replace by civil service. Then everyone HAS to get their Masters if they want a diploma from Polytechnique, because Polytechnique does not deliver Bachelor degrees, in fact no engineering school in France does.
For the forth year, if you are well ranked, you can do incorporate a...
>>
>>8318830
What about the jobs? Do they get same chances?
And the pay?

File: 1471670946469.jpg (505 KB, 1600x1200) Image search: [iqdb] [SauceNao] [Google]
505 KB,

Do you ever feel like trying to discover something new and significant in your field is overwhelmingly difficult because everything worth discovering has already been discovered?

I imagine that scientific knowledge is like a map in age of empires, and we are at the Imperial age with most of the map discovered except for those little shitty lumps of forest

Do you ever feel overwhelmed or does this just...
>>
>>8318770
Maxwell Euler and Newton probably thought that too
>>
File: void2.jpg (157 KB, 1200x630) Image search: [iqdb] [SauceNao] [Google]
157 KB, 1200x630
>>8318770
>Do you ever feel like trying to discover something new and significant in your field is overwhelmingly difficult because everything worth discovering has already been discovered?
There are an infinite number of discoveries yet to be made. You can sketch the proof of this considering the axioms of mathematics and the new definitions that follow. If you're not a brainlet you have to put hard work and you need to discover something someone actually cares.
>>
>>8318770
You are retarded. Wikipedia has a list of open problems in every field.

There is so much to do. You are just bad and are trying to explain why you are going to be useless for the rest of your life.

[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 / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /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 / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /vp / vr / w / wg / wsg / wsr / x / y] [Home]