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/sci/ - Science & Math

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[Catalog] [Archive] File: little jew.png (334 KB, 686x510) 334 KB PNG okay /sci/, between finance or theorectical comp sci, which is more financially profitable for an individual in the long run? >> >>10571207 no one is going to pay you shit for "theoretical comp sci" except as a professor, which if you win the tenure lottery will cap out around 100K/year after a decade of school and another decade of teaching shithead undergrads for peanuts you can make pretty good money in software engineering doing what's usually a mid-stress job provided your workplace isn't dysfunctional finance has a much higher ceiling than just about any other traditional "job" but the jobs are extraordinarily stressful and shitty and your competition is pretty fierce for good positions if you aren't a psychopath who gets off on cutthroat competition and high-stress work you're going to end up in some jabroni dead-end technical position >> >>10571207 Get a BS in TCS or math and then go into a masters program for financial engineering/financial mathematics/quantitative analysis and then become a quant. Starting salary around 150k and you can work your way up to 7 figures if youre really successful. >> >>10571207 I don't know about finance. Can you compete with the likes of https://www.quora.com/profile/Theodore-Weld-Smith? Software engineering is probably better than both for you. >> >>10571207 Study mathematical finance at the University of Waterloo if you're Canadian. Then you can work at a hedge fund as a quant >> >>10571378 Lol waterpoo is a shit tier school File: qwe_download.jpg (14 KB, 220x279) 14 KB JPG What's your excuse for not knowing complex analysis? >> File: 1551530807485.png (1.29 MB, 1179x951) 1.29 MB PNG >>10572074 >> >>10572074 I dont even know non-complex analysis >> I've fired my neurons! lol >> >>10572074 not being smart enough >> >>10572074 i dont need it mate File: IMG_2138.jpg (13 KB, 216x233) 13 KB JPG Pop Sci can be viewed as a good thing because it makes normies more scientifically aware. The problem is when They turn into the "I fucking Love science" crowd and become annoying pseudo intellectuals who they're smart for watching the Big Bang theory. 7 replies and 2 images omitted. Click here to view. >> >>10572035 Nah, you need to raise the general level so that a critical mass is reached for the diamond to shine. Nice to have super scientist, but what good without scientifaclly literate engineers, technician to make it work? >> >>10571530 Why is that bohrs model still widely used if its been surpassed by the electron cloud? >> >>10572067 A caste system. Optimate ruling class synthesizes information from the and directs the Brahmin scientist-priest cast according to whatever metamathematical ideal defines the civilization Vaisya engineering / production class is educated by Brahmin to work on practical applications, and the Brahmin lift the best into their own caste. The Vaisya class will also constantly shrink due to their utility being constantly overtaken by mechanized reasoning. A Helot manual labor caste will exist as well. >> I'd say that popsci in general is perfectly fine and does have a noble goal of trying to get more people interested in science. I think that bad scifi is more harmful than popsci. With popsci the writers have at least read some abstracts about what they're presenting, bad scifi treats science as if it was magic and that leaves the impression that science is something inconceivable for most people. >> >>10572083 how to visualise electron clouds? File: Fluid+mechanics.jpg (73 KB, 960x720) 73 KB JPG Hello my name is anon and I have a question. How does turbulence exactly work? And why does it work that way? The reason is because I've tried to find an exact answer to this question and I can't. So I've turned to 4chan for help. Now I have done a bit of research on the physics of fluid mechanics. And I was thinking putting some information on some of the subjects I think we'll be talking about here. Just to help some people have a better understanding of what we're you know talking about. 1. Dimensionless numbers. Dimensionless numbers are numbers that don't really have any physical quantity assigned to them. For example Atwood's number which I believe is normally used on what I believe are stratified flows. 2. Classical physics: Fluid dynamics is in classical physics. However it also uses a few other sciences. Such as chemistry. For example when studying different types of fluids such as honey and water. You measure the density and it's viscosity. Now don't get me wrong there are other physical/chemical variables that should be included in the calculations as well. Such as air resistance, gravity (big G and little g), and the probability of turbulence actually occurring. Which I believe the Reynolds number (which is another dimensionless number, as I said before there are a lot of dimensionless numbers in fluid dynamics). Sorry if I sound stupid. I haven't studied fluid dynamics in a long time. Please call me out if I screwed up on something. If I don't reply it most likely means that the post has been archived. Sorry to bother you. 3. >> >>10571111 It's not that your questions are stupid, it's that you come across as a rambling schizo. Especially when 9/10s of a very long post isnt relevant to the question. >how does turbulence work A flow with a Reynolds number of less than about 2100 is laminar. This means the layers of fluid in flow dont mix with each other. The velocity profile in a pipe is parabolic in shape when flow is laminar. With Re>4000, flow is turbulent which means there is lots of mixing. The velocity profile is flattened when flow is turbulent. With 2100<Re<4000 we say the flow is in transition between laminar and turbulent and it is more difficult to make predictions about it. >why does it work this way Friction is a contributor. We don't really know, though. "Why" isn't really a scientific question. Ask God when you get to heaven. >> Oh ok thanks. >> I actually already knew about flows being laminar when the reynolds number is less than 2100. But I just don't know why that happens. Any ideas? >> I mean why? Why does it work in this way? >> I mean why. Why does it work this way? I know It may not seem like a scientific question. But I just don't know why. Why do chics go for strong and dominant guys? Why do guys go for cute girls who smell good? File: 709m.jpg (2.38 MB, 1390x1975) 2.38 MB JPG The Sun just disappears from existence. How long until all humans are dead? How long until all life on Earth is dead? 32 replies and 2 images omitted. Click here to view. >> >>10570736 Deep sea thermal vent niggas will still be alive until rapture. >> >>10570935 There would be no sudden change in acceleration, at least not from our perspective. The force that holds you (not the Earth, but you personally) in orbit around the sun is relatively small compared to the force of earths gravity. We hardly even notice we're in a rotating frame of reference. >> >>10570736 Cringe >> >>10570796 >>10571157 What is the percentage of plants that consumes oxygen during nighttime? >> >>10570736 My question to this is, since our solar system revolves around the sun, would we still continue the same path of revolutions? Would all the planets collide? Wouldnt the sun disappearing result in the sun going super nova and consuming us all? Or do you mean just, if we didn't have a sun? We would not have food to sustain after a while unless we relied on nocturnal plants, which rely on moon light so that is out of the question. Our food would he depleted and the earth would be approaching 0 Kelvin RAPIDLY File: wish you were here.png (1.49 MB, 1920x1080) 1.49 MB PNG assumption 1: mass is energy assumption 2: light has energy conclusion: light has mass or is this something like all crows are birds but not all birds are crows 9 replies omitted. Click here to view. >> >>10571167 Things can have momentum without mass. It seems strange when you're used to [math]p=mv$, but the proper formula is [eqn]p=\frac{\sqrt{E^2-(mc^2)^2}}{c}[/eqn] which reduces to p = E/c for massless objects.

For massive objects, $E=\gamma mc^2$, where $\gamma =\frac{1}{\sqrt{1-\frac{v^2}{c^2}}}$
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>>10571885
Thanks anon
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>>10571109
Mass is resistance to newtonian movement, gravity is more like caused by some potential that comes along with matter, but not mass itself.

Maybe mass is what causes gravity, and resistance to newtonian change movement is something different.
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>>10571885
Dude's fucking cool for describing energy he can't interact with or move.

WTF?
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>>10571109
It's like photon and photons could even be different thing. Like light can transfer a energy, but you can't get energy from photon

Let me introduce you to a new concept:

You need material to have, to be in work, to make a work, you need energy to do that.

Problem: Dyson sphere is inefficient use of material to obtain energy, as there is not so much material in star systems, to do a construction like this, to have some "effective" body movement from it.

On every image on dyson sphere, there is just one big thing, collecting energy.

Advanced civilisations won't use dyson sphere, but they'll have energy from balance, e.g. energy will be recycled, heat will be "organized" into non-brownian motion of huge bodies, electron potential of surrounding space will be pointed to a place where it will do usefull work.

Dyson sphere is not advanced at all, it obeys to law that closed systems can't absorb energy, problem is that you don't live in closed space.

Potential energy can flow in closed loop... More like "electrons don't dissapear" and you make them constantly moving trought working "part" of thing. e.g. electrons on matter in isolated space are constantly pushed to do some work, then they emit heat in the resistor. Resistor decreases their potential energy, but they're not lost. They can move in loop forever powered by the fact that out of electron properties you can costruct device that'll just direct free radicals(resistance, transformed energy) again to do some work, e.g. propulsion.

Dyson sphare could be only usefull if you made components out of that stuff sun emmits in the universe. It doesn't make sense for energy device to be that big and using so much material.
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>>10572017
Gravity gun is awesome thing.
>>
Could be, however personally I think the universe and the whole system of multiverses are not expanding, are contained and that there is another force we have yet to discover! A force that is unlike energy we know of, unlike intelligence that is the peace to the puzzle and it is beyond the dual aspect we always here perceive. I think the true construct and the function have a three part aspect that contains this thing! Energy and matter -antimatter are one, affected by intelligence and what else? There is something else, the only one thing, like a thread that can affect the containment and possible the beyond!
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>>10572025
Once higgs potential is real stuff, we can assume that there is way to affect just higs potential in a remote body, like if we shine a light on it.
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>>10571973
and they need a temperature difference to operate.
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>>10572116
Which can be created with less energy than you gain from it.

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What is spin? Just can't wrap my head around this concept.
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>>10571870
There's an important point that is often missed when introducing spin:
When spin is measured, one can only measure the component of spin along a particular axis. For an electron, this is 1/2 h_bar. This is not the full magnitude of angular momentum for an electron, which is actually sqrt(3)/2 h_bar.
This full value is never observable because there is an uncertainty relation between spin components on any two axes. The observable is the component along the axis of measurement, which because of quantum mechanics and uncertainty relations, is always +/- 1/2 h_bar.
>>
It's just a quantum number. Focus on the effects of spin which are oftentimes very similar to those of angular momentum, but be aware that it's actually not angular momentum-
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>>10571870
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>>10572098
it is actually angular momentum though, it's just not the same as a classical thing spinning. it's "intrinsic".
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>>10571870
What is partice spin and angular momentum in Quantum mechanics?

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>35 years since the original Terminator
>humans still can't build a T800

Forget the power source or artificial intelligence, we can't even get the other mechanics right. We can barely build bipedal robots, only meme ones like Boston Dynamic flippy shit. What the hell are people in robotics doing?
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>>10571221
Yes, humans only built a UGV with treads. Obviously an AI with self awareness can R&D without being hindered by bodily functions, funding, and politics.

Obviously OP is retarded
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>>10570816
How would a not physically connected part grow and be maintained, smartass?

>>10570826
retard, nice 3%
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>>10570781
I case you don't know this, it's not our duty to recreate all kinds of stupid shit you see on tv
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>>10570812
Biped development = sexbots.

After 70 years of research how much does science know about autism?
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>>10572064
Not much other than it is caused by vaccines.
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>>10572064
There is a hyptohesis that your brain doesn't learn certain behavior if it has nowhere to observe it, therefore you won't learn certain things, therefore you're autist.

Quite like machine learning can't categorize stuff of datasets it processed.
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>>10572064
>Get autism diagnoses
>Doctor says developmental problem and gives you a dozen sheets of paper explaining nothing about autism and just ways to get support

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Why does life choose to sustain itself. The purpose of human beings is to survive and reproduce for the sole purpose of allowing life to carry on surviving and reproducing ad infinitum. But why? It's like a powerlifter who doesn't do competitions and only lifts for the purpose of just lifting a heavier weight. There is no end goal like an aesthetic brah who lifts to look juciy and get the girls mirin?

Can any /sci/entists explain why life wants to continue on living? Do you think if life realized that it's just living to continue living without any goal other than to self sustain, would it choose to contain existing?
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>>10572033
>what is survive and reproduce
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>>10571366
>>10571366
Each person is here to define own purpose, you authoritarian totalitarian retard.
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>>10572102
Your purpose is whatever forces push you to become and do.
Whether those forces are internal or external doesn't really make a difference. Whether a slave builds a monument, or it is built out of internal desire doesn't really matter. In the end you get the same monument.
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>>10572102
>>10572114
have sex
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>>10571366
What kind of pic is this

Why is Cloning universally outlawed and could we pull off full reproductive cloning today?
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>>10572050
1: wow, ur edgy
2: why should we?
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>>10572052
1:how underage/reddit are you?
2: Same reason we went to the moon? Curiosity, you fucking mong.
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>>10572050
I don't know about the others, but I mostly hear that scares the shit out of religious people since according to them you are creating a being like you are God I guess. In other words, just stupidity.
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>>10572104
This is exactly what was said in if my (required) philosophy of ethics class. We get into the whole playing God thing and choosing genetics for perfect babies and what not
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>>10572050
It is so funny to me when people say things are "universal"
>implying everyone in the universe that may or may not exist doesnt clone
>a universal remote will work anywhere in the universe

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Has science gone too far by creating the perfect woman?
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>>10571383
Why losers keep making edits like this?
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>>10571458
It's not an edit.
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>>10571365
Taylor series are so hot
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>>10571475
volafile dot org/r/w86qfmug
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>>10571465
Anon, I...

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How true is this? is it a meme?
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>>10571699

If I remember correct about 10%-30% of people with autism have some sort of savant abilities which is quite fascinating.
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>>10571918
>>10571699

https://youtu.be/bpjXWF7kdvw?t=1452

The stereotype is the result of savants (Tesla, Kim Peek, etc.) thought to be autistic. OCD can lead to people on the spectrum having an extreme interest in tasks focused on organizing things rigidly, which would explain why many of them excel in mathematics.
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>>10571888
Wait, I also poop once every two weeks. I didn't know this was associated to a condition. Can you build muscle?
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>>10571888
>absolutely 0 want to be social
>on 4chan, a website where all information is produced by other people

Why are you here? Why did you bother to write out that entire story? I think you do have at least some desire to be social.
>>
>>10571699
It means specialized. Maybe even wrothless, but specialized somewhere others are not.

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