Archived threads in /sci/ - Science & Math - 262. page
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Anyone up for some /sci/ Libs?
I need a noun.
Climate change
Another noun, and a plural noun.
midgets
What causes a wave function to collapse?
>>7972426
Human observers. Quantum mechanics is proof that the universe was made by God for humans.
>>7972428
What if the photons that are emitted when we look at it hit the wave and change it?
>>7972430
In theory it works but in practice it doesn't.
He stated that: "Supercomputers will achieve one human brain capacity by 2010, and personal computers will do so by about 2020."
>>7972281
>Retard says something retarded
I'm shocked.
>>7972281
It happened, actually...at least the 2010 one
>>7972281
He's a madman dude. He lost his shit in the the 60s trying to come up with the singularity hypothesis.
How can STEM students even compete?
I can't believe I took the time to read that
He sounds kind of like Steven Wolfram.
>>7972518
Can you elaborate
I've seen Wolf get a lot of hate on here but never known why
so ive got a horrible function and shit. when i do
plots[animate](plot, [Ax-axionAx, z = 0 .. 200], t = 0 .. 1/1500000, frames = 100)
i get pic related, but when i do
plot3d(axionAx-Ax, z = 0 .. 200, t = 0 .. 1/1500000)
i get whats in the next picture.
so why is there such a disparity between the 3d plot and the animation? is there any way to fix the 3d plot, because the animation is right, but i need the 3d plot
>>7972009
git gud faggot
bump
Could science ever harness the power of the electric eel? This thing produces 650V of electricity. I for one envision a world where I plug my MacBookpro into an eel to charge it.
>>7971859
I don't know who the hell you think you are, Mr. Harvey. But I think we could change the world with these algorithms.
>>7971848
Sir, you need to find the short circuit current of your eel and how long it can sustain it.
What is this kind of question called, and how do I solve it?
I am just starting complex numbers (self-taught), and i am having trouble with the polar co-ordinates because of my incompetence with these questions.
When do the graph of sine and cosine cross each other?
>>7971755
I dont know. I can estimate it with graphs, but I dont know how to calculate it.
unless im just forgetting something really basic like an idiot...
>>7971740
[eqn]\sin \theta = \cos \theta[/eqn]
[eqn]\sin \theta = \sqrt{1-\sin^2\theta}[/eqn]
[eqn]2\sin^2 \theta = 1[/eqn]
[eqn]\sin \theta = \pm \frac{1}{\sqrt{2}}[/eqn]
Moral of the story, substitute either sin or cos and solve for the trig function.
Can science really explain all of this?
only once we discover the power of triple integrals.
>>7971672
Yep.
>>7971672
Sure, why not?
Where do I even start with this problem? I get the feeling that I'm supposed to use differentiation to prove this, but it explicitly says right there that F=ma can't happen because m is not constant for particles.
I've never taken physics in my life.
>>7971565
in SR, write the product of m times v
then write v = v(t) since v depends on time t, then differentiate with respect to time t
usual the chain rule
then render manifest some acceleration a, which is defined as whatever makes you get the final result on your sheet
>>7971586
>then write v = v(t) since v depends on time t, then differentiate with respect to time t
What I posted is the entire text of the problem. There's no v or m given elsewhere to differentiate, or any other functions for that matter.
>>7971593
you are wrong
you know that F = d/dt (mv) which is true in SR
but in SR the mass m= m(v) is what is given, with v depending on time t, so you must be careful when you differentiate wrt the time t
in newton, mass is cst wrt the time t and the velocity v.
your whole problem is a chain rule.
guys am I the one with a fucked white css for 4cha now which happened 1 minute ago?
>ywn see a pulsar up close
>ywn travel to another planet/system
>ywn see our sun from another system
>ywn see a binary system's sunrises
>ywn see our galaxy's supermassive black hole in action
>ywn see our galaxy from outside
>ywn see the Milky Way - Andromeda Collision
>ywn see the Majestic Virgo Supercluster/Local...
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What does "ywn" stand for?
>>7971155
a pulsar is a mathematical entity.
nobody knows what a pulsar is outside math
>>7971197
"You will never"
Why are stars fuckhueg and planets not?
Also, how do they even estimate the sizes of these stars?
there's more hydrogen in the universe than other elements. what else you fucking idiot? jesus how is this a question? think about it; the progenitors of other elements are these stars. when they exceed a certain size they reach a critical phase that prevents an accretion disk of a large enough scale that could produce fuckhuge exoplanets.
>>7971003
The rich get richer. The biggest object around tends to accumulate more mass than other nearby objects, making it even bigger, and even for likely to pick up mass, and so on. Also with the really big ones a lot of their volume isnt particularly dense
>>7971009
>there's more hydrogen in the universe than other elements
That doesn't tell me shit.
> what else you fucking idiot? jesus how is this a question?
Tell me how to price a European stock option. Speak with me in German. Write some code in C#. Getting the point dumbass?
>when they exceed a certain size they reach a critical phase that prevents an accretion disk of a large enough scale that could...
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What molecule is this?
That's not a molecule. That's a sculpture.
>>7970958
That's not a post. It's a series of bits.
>>7970953
it's a bullshit molecule. it's missing some bonds. unless some nigger stole parts of it, the artist who made it is an idiot.
>hurr engineers learn just as much as mathfags and physicists
>in uni: calc III/ODE
>in real life: excel and basic geometry with CAD
it's like bragging you one rep'd a plate in high school on /fit/ while you clench a shaker in your personal gym. why are engineers so deluded? i'm not going to deny they're important to society, but in no way are you on even intellectual ground with real STEM majors. Every single project or contribution you make is built on...
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>>7970917
y u mad tho
>>7970918
because it's fucking hypocrisy. imagine a cab driver talking shit about an automotive engineer. he gets to point A and B, not you. why do you matter in the equation?
>>7970917
>in real life: excel and basic geometry with CAD
not even remotely true. practicing engineers are very involved with numerical methods, particularly convergence of solutions and orders of error. i know you think CAD software is nothing but virtual legos, but they are comprehensive CFD/FEA packages which require knowledge of PDE's and complex analysis.
So it seems to me like there are two kinds of people that complain about depression. One seem to have reasonable reasons to feel down. Like being ugly, sick, poor, dumb, friendless, social phobic, without education/job... the other seem to be irrational and unable to explain why they feel bad. They have a college degree, good job, friends and a significant other...
So is the first case depression or just a reasonable reaction to being dealt a bad hand / being in a bad place in life? Then again there are people that have the same conditions without complaining about depression....
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>>7970862
Recently I've seen several psychologists and psychiatrists say that combining several things into 'major depression' was a mistake and that 'melacholic' and 'reactive' depression should have been maintained as separate diagnoses.
https://www.youtube.com/watch?v=TIcf-2AFHgw
>>7970862
Depression is great, it makes you work. Happiness is equal to absolute poverty, you are too happy you don't care etc happiness throws duty, morals out of the window, happiness is like snorting cocaine, it will eventually make you poor and die
Ask an astrophysicist anything.
>>7970768
What's it like being jobless?
>>7970768
Why kind of math do you use to model rotating stars?
Opinions on orbital phase curves as a method for exoplanet detection?
