If you could go back in time and give yourself one tip before starting College/Uni, what would it be?
>>8330694
Study more outside of class (have more than one textbook per class), schedule my shit better, and finally talk to my professors more (casually and academically)
"Hey faggot,there's a thing called bitcoin. BUY EVERY SINGLE ONE OF THEM YOU CAN RIGHT GODDAMN NOW"
I would literally be a millionaire in a few years. Fuck year.
>>8330705
kek i take mine back
What programming language should I start with? My ultimate goal is to be a mathematical physicist and make some money during uni by writing adware for facebook and shit.
Writing here because the contingent is smarter and sci-related.
>>8330692
It really depends, but the most rigorous and applicable programs generally for CS understanding are C++ first for understanding and JAVA for monies. Even simpler to start with RUBY and PYTHON are good places to begin and also marketable.
Also be prepared to learn Mathematica, MATLAB, and potentially FORTRAN. But these are not starter programming languages, rather the standards in physics.
>>8330692
C++.
You'll likely need to know python and fortran, eventually.
Is organic life an organic form of grey goo?
>>8330652
Basically, kinda.
Why are so many threads on /sci/ the same stupid question threads that get five posts max and often have a silly cat image?
>>8330679
because the question is never given a satisfactory answer.
Wtf? How is sodium not critical for muscle contraction?
> establishment of the membrane potential
> direct role on action potential.
> action potential that triggers muscle contraction does so via voltage-gated sodium channels causing a calcium influx that leads to muscle contraction
> muscles can contract via anaerobic means
> use ATP to contract, but ATP doesn’t necessarily require oxygen if it follows the less-efficient lactate formation pathway
> answer should be oxygen?
>>8330613
Fuck off brainlet
Don't you think fucking oxygen is more crucial here? I agree that all of them actually play some part in muscle contraction, but you have to be stupid not to figure out they meant sodium here. Just look at the options you have.
What is the Relative Speed of Photon 1 passing Photon 2 if both photons are passing going in opposite directions in a Vacuum? Would the answer be C or 2C?
Basically how fast would Photon 2 be going in the perspective of photon 1
0, from the perspective of a photon, time doesn't exist
>>8330567
Lorentz
>>8330567
Photon's don't have reference frames
How did they do statistics before computers were invented?
Computing Ordinary Least Squares by hand sounds like a fucking nightmare
>>8330462
they literally didn't have anything better to do
>>8330462
Compution by Students. Old technique.
Back in the day being a theorist studen was painful, nowadays it's perfect.
>>8330463
Farming i guess But that was probably peasants
Can someone explain the fourier series? I can't get my head around this shit.
>>8330451
A fourier series is a way to represent a wave function by a series of simple sin functions.
For example take the sine wave, a single sine wave would be curvy. But if we combine many different sine waves we will get closer to a sawtooth function.
Fourier analysis is taking these more complicated functions, sawtooth, square, etc and expressing them instead as a collection of simple sine waves.
https://betterexplained.com/articles/an-interactive-guide-to-the-fourier-transform/
>>8330451
It's like Taylor series but for periodic functions.
Could someone please explain this "time is just an illusion" theory I've been hearing about?
>>8330270
google the philosophy of time. spend a week or two being thoroughly confused. then drop the subject.
Flow of time is illusion caused by our brain. Time doesn't flow forward, but our brains experience the time flowing forward. Our brains can only think in 3 dimensions, so we experience our life as 3-dimensional "slices" as "flowing" as linear order. In reality "past" and "future" are just directions. Everything that happens has already happened, and everything that has already happened is still happening, while actually nothing happens, but we are just observing the universive from different angles of 4th dimension.
We don't move to the "future" direction, but our location is static line in space-time axis. From the point which our birth to the point which is our death. And the line in between, is what our brain processes through.
>>8330270
Philosophy is cancer and has nothing to do with science. Basically the argument goes that the flow of time is an illusion created by our brain. However this has never been proven, also things inherently not under control of our brains behave as if time flows, and don't magically pop through the fourth dimension or some crap. Also we know from relativity that time isn't even linear and also is part of the fabric that makes up our universe and is not a figment of our brains.
So yeah, philosophy is pretty much fucking dead at this point.
>School holds a seminar with a very famous and talented researcher in a field I care
>Q&A session
>Undergrad keeps asking shit question like "Why should I do?" "What books do you recommend", i.e. shit you can google in 1 minute
>I prepared some relevant questions and raised my hand but no one noticed
REEEEEEEE
Rage more, faggot. This shit happens all the time.
>Go to lecture about multiverse theory
>It was in middle school so it was pop sci mostly but had some cool shit in it and the guy was a professor and shit
>at the end we could ask questions
>get in line
>le random XD tumblr girl in front of me asks overly complicated question that makes no sense, takes ten minutes
>"Well, that's all the time we have for questions."
Basically I don't know why you expected to be able to ask questions when this shit is so common place.
>Asian Science Man comes to my small, meh-tier uni
>does Q&A session with students before giving a talk
>I ask him if there's any current research into the role of dark matter in the formation of star systems
>he gives boilerplate response about dark matter being cool and poorly understood
>ask physicist friend about it afterwards, turns out dark matter is too diffuse to affect stuff on scales below that of galaxies
>turns out my question was pretty retarded actually
>mfw
I really hate it when the person who ask the questions do not even know what the fuck he is talking about.
It's like he didn't understand the material but pretend to do and ask questions, but everything came off unintelligible.
>Calc I
>First day
>Professor says he doesn't like the term "undefined," says "undetermined" is better
>Says a vertical line is an infinite slope, but we say it's "undetermined" because it's impossible to tell if it's positive or negative
What is going on? Is Calculus about to fuck up everything I thought I knew about math?
>>8330189
Try to at least talk him into calling it "indeterminate".
>>8330197
This
undetermined: Synonyms blear, bleary, blurry, dim, foggy, fuzzy, gauzy, hazy, indefinite, indistinct, indistinguishable, misty, murky, nebulous, obscure, opaque, pale, shadowy, unclear, """undefined,""" faint, vague.
sorry anon but your professor is a moran
What would happen if I took the derivative of a function at a certain point?
>>8330160
Why are you so nosy?
>>8330160
What does multiplying d and x together have anything to do with this...?
>>8330176
Nothing, Leibniz a shit. Real derivative functions are denoted by letters with apostrophes after them.
Why do we assume the universe is a closed system?
>we
speak for yourself
why do you assume it is?
>>8330142
its a universe not a two-niverse
>>8330142
Because every space has a closure.
Does anyone ACTUALLY understand quantum mechanics?
You can either understand or quantum mechanics, not both at the same time.
It's one of the postulates.
what type of understanding?
>>8329974
conceptual
I'm not a smart person but I have a simple question about pic related.
Is this bullshit?
It states that in 100 billion years all galaxys will disappear from the observable universe.
But in order for this to happen, named galaxys do need to suddenly expand with a speed greater than light, don't they?
>>8329878
>But in order for this to happen, named galaxys do need to suddenly expand with a speed greater than light, don't they?
yeah exactly.
Everything is not only expanding away from us, but speeding up as they do.
I'm just glad to be alive at a time when the universe is still young and we can still see everything. It's going to be a dark sky for the humans that survive until the end of the universe.
>>8329882
>Autocorrect fucked that up
I didn't know that, I assumed it gets slower. Thank you
Can someone explain quantum entanglement for me please... More in depth if possible such as the process by which it happens
We know *what* happens
Not *how*
The underlying mechanism is unknown
>>8329745
That depends on (a) the legitimacy of interpreting the quantum state of a physical system "realistically" and (b) the completeness of the quantum-mechanical description of the physical system. If these two conditions are satisfied, then we are obliged to accept a literal interpretation of the peculiarities of the quantum mechanical formalism (entanglement included!). The fact there exist quantum states of two-body systems which cannot be factorized into products of one-body quantum states means that there is objective entanglement of the two bodies, and hence a kind of holism. Furthermore, the fact that spatially well separated bodies can be entangled means that there is a peculiar kind of quantum nonlocality in nature, which is manifested in correlations of the outcomes of measurements performed upon the separated bodies.
>>8329761
You just used bunch of big words and said shit I already knew, retard.