>Constants
>Fudge factors
Either our top scientists are lazy or maths isn't so great at modelling the universe.
>>7812734
>Constants
Constants are not always even constant in physics.
>>7812749
Boltzmann's constant has never changed.
So Darwinists, if evolution is true, why is it still a theory?
because proving science is hard
In science, the word "theory" means something different than what the public thinks it means. The public thinks a theory is a hypothesis. In science, it means it's an idea that has not yet been disproven. This is as close to calling it "true" as science will ever come. Science calls nothing "true" as a matter of principle- it must be assumed that anything can be disproven.
Gravity, for example, is still a theory.
>>7812394
You filthy atheists with your theories of satanic gravitation.
Where did the phase go from the first to the second formula?
>>7812056
It was expanded into a sine and a cosine.
The purpose of the fourier series is that you can simplify it to a series of coefficients. If you have to keep track of phase as well, well then you have to keep track of more things.
The first formula and the second formula are equivalent at corresponding A_n, a_n, b_n, and phi_n. In case you didn't know, sin(x+pi/2) = cos(x)
>>7812092
I should clarify: generally you look at just the fourier series when you don't particularly care about the phase. If you also care about the phase, you'd more likely use the fourier transform. Some math majors might get angry at me for this explanation, but as a EE that's how I like to think about it.
Is it healthy to force yourself to stay in your room studying for an entire day?
>>7811857
One whole day? Wow, anon, you must be a superman some kind.
>>7811862
I literally just switch up my topic of study interchangably when i grow tired of it.
>>7811857
>studying for an entire day
woah dude
Hey /sci/
Can someone tell me what kinds of different things can come from supernovas?
example: neutronstars and black holes
Heavy metals come from supernovas.
>>7812388
Light metals do too
Neutrino bursts.
A microwave is a magnet-based device that makes things very hot in a short amount of time.
Can there exist a similar magnet-based device to make things very cold in a short amount of time??
No. A "microwave oven" is a device that uses a magnet to make "microwaves" -- actual waves of energy. The microwaves then impart their energy into whatever they hit to make it hot.
You cannot "make things cold". Cold is not a thing. It is the lack of heat. You can only give the heat energy somewhere to go by providing something colder.
>>7811405
Magnetized liquid nitrogen.
>>7811405
>what is google
https://en.wikipedia.org/wiki/Magnetic_refrigeration
So /sci/, I been wondering... Can a large sugar rocket (any homemade rocket) break the atmosphere in theory? Can I build a rocket and attach a camera, and send it to space? Is this possible, or am I mad? If so, what should the rocket look like? Pic related, sugar rocket.
>>7811312
HOLY SHIT GUYS IT'S A TERRORIST!!!!!!!!
>>7811324
No i'm not. I'm just curious.
>>7811312
I doubt it. There is a reason rocket fuel is a thing
can sum1 plz explein super springfield theory 2 me
>>7811236
Ok, Springfield Theory is the second quantization of Spring Theory.
Spring Theory is a proposed unified theory of physics where everything in the universe is made up of these tiny fundamental objects called springs.
We study these "springs" in terms of what is called there worldareas. To understand what a worldarea is, think of a classical spring. A spring will propagate back and forth in a sort of constrained wavelike motion. The area the spring "swipes out" as it propagates back and worth is what we call the WorldArea.
These WorldAreas are extremely convenient as they can just be viewed as 2-manifolds. In fact, due to physical symmetries, we can actually view them as Riemann Surfaces.
We parametrize the worldarea of a spring in terms of a space-like and a time-like coordinate, [math] \left( {\sigma ,\tau } \right) [/math].
We then define a metric on this worldarea [math] {h_{\alpha \beta }}\left( {\sigma ,\tau } \right) [/math].
We can now define an action of our spring theory in terms of its world area,
[math] S = \frac{1}{2}\int {{d^2}\sigma \left( {\sqrt { - h} {h^{\alpha \beta }}{g_{\mu \nu }}{\partial _\alpha }{X^\mu }{\partial _\beta }{X^\nu } - k{g_{\mu \nu }}{X^\mu }{X^\nu }} \right)} [/math].
Where [math] {g_{\mu \nu }} [/math] is the metric of the background spacetime and [math] {X^\mu }\left( {\sigma ,\tau } \right) [/math] are embeddings of the worldarea into the background spacetime.
The second quantization would be done using something like...
[math] Z = \frac{1}{{Vol}}\int\limits_{\mathcal{M}/\~} {\mathcal{D}{h_{\alpha \beta }}\mathcal{D}{X^\mu }\exp \left[ {i\frac{1}{2}\int {{d^2}\sigma \left( {\sqrt { - h} {h^{\alpha \beta }}{g_{\mu \nu }}{\partial _\alpha }{X^\mu }{\partial _\beta }{X^\nu } - k{g_{\mu \nu }}{X^\mu }{X^\nu }} \right)} } \right]} [/math]
>>7811277
Kek
>>7811277
2/10
Science?
Science.
>mfw i was watching shark tank reruns once and some dude was trying to sell a band that neutralized the positive ions in the air around you
>mfw the sharks called him out on how bullshit it was
>>7810903
People shouldn't be allowed to get rich on that kind of stuff. It makes me feel almost cheated that people are stupid enough to believe that.
IIRC, this is exactly how those tower air purifiers work (ionic breeze I think?)
But I'd imagine the actual effectiveness is pretty low, and they are more pretty decorations for people who like to brag to all of their friends about how down to earth and educated they are
people on my board keep arguing about this
Help?
1
>>7807552
Brackets first. Then division followed by multiplication. You will get 1. If you didn't you're a low IQ pleb.
9
is the image on your left correct?
Why isn't the magnitude spectrum of signal x(t) just |a|*(b^2+w^2)^(1/2) (magnitude of scale value a times magnitude of hypotenuse with vertex at (a,b))?
why would you divide |a| by the radical rather than multiplying? Or maybe it's just a typo...
please help me figure this out, /sci/...
>>7812985
>vertex at (a,b)
*vertex at (b,w)
sorry
Is writing the conclusion to a problem the best thing in life? Is there anything more satisfying?
I find it more satisfying than sex or drugs. Only thing that comes close is a heavy squat session.
>>7812931
For me, making/building something or figuring out a real world problem.
Theoretical stuff doesn't do it for me.
>>7812936
What is "theoretical" stuff?
>>7812956
working stuff out on paper, doing things like math proofs...the stuff where you don't end up with something tangible in your hands. I'm not devaluing that kind of thing at all. It's massively important, but it's not my cup of tea. I'm all about building and making things though...like I just finished making a computer controlled equitorial mount for doing astrophotography.
Is it possible to achieve weightlessness by putting the moon extremly near to the earth? Could we fly around for a few seconds if the moon was on collision course with the earth?
The moon's gravitational pull is much weaker so no.
If they were almost touching, you'd weight about 5/6 of what you weight now, because the moon gravity is 1/6 of earths at its surface.
I can divide by zero.
I define A/0 to equal A(Grannyies famous apple sauce pie), and as all of you know, X(Grannyies famous apple sauce pie) is bouncy to a degree of X. Or, written in closed form, Bouncy^X. Therefore, 1/0=Bouncy^1. There, division by zero.
>>7812608
>Hello, /sci/, I just made my way here from /b/. I'm unsure yet of whether I want to be accepted into your ranks, but I really want you to like me and I hope we can be friends. I should warn you I'm a bit autistic, but little do I know, so does everyone else on this fucking board. Please like me. Sincerely, Austin
Fixed.
>>7812623
Excuse me, but this is math accepted by many mathematicians. This is a place of science, not /b/ trolls.
>>7812627
I said nothing of trolling. Merely a bland and wafer-thin humor crust around a rich, creamy core of insecurity nougat.
Why did some native americans survive the epidemics?
It wiped out so many yet some walked away. I feel it's different than Europe because the Americas were isolated and much less exposed throughout their history
>>7812350
>I feel
Dropped. Feelings are discussed on tumblr.
>>7812351
Fuck off
>>7812356
No, for real. Nobody gives a fuck about what you feel. What argument do you have for it not being simply that some of them were immune or were not exposed?
