Archived threads in /sci/ - Science & Math - 35. page
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.
What does /sci/ think of computers?
>>8178696
Fuck off, idiot.
>>8178696
Hey fuck you
>>8178696
Fuck off computer
If the square root of -1 is calculated to be i, and has merit due to its applications- why wouldn't the cube root of -1 be both -1 and an imaginary number?
Are there just no applications for it?
>>8178663
https://en.wikipedia.org/wiki/Root_of_unity
>>8178663
>why wouldn't the cube root of -1 be both -1 and an imaginary number?
Er, Why wouldn't there be two cube roots of -1: both -1, and an imaginary number?
Why is pain so hard to deal with? Why can't I take my mind off it? What's the secret to dealing with it?
>>8178626
Pain is just a signal that there is potential damage to parts of your body. Evaluate whether this is the case and then either act or ignore the pain.
>>8178628
This sounds easy in theory but I practice it just doesn't work. Why?
Hi, sci. I have a task.
I need to represent number as a sum of K elements, but each element should be 1, 2, 3, 4, 5, 6. Is there any solution I could count the number of this sums ?
>>8178555
Your question is incoherent. Try again later.
>>8178574
I mean binomial coefficient with some addition so it could be easy to calculate if you're not trolling.
>>8178584
Coefficient of x^n in x^K ( (x^6 - 1)/(x - 1) )^K where n is the number of interest.
Could Fermi's Paradox be explained by quantum physics?
If quantum fuzziness increases the longer it's been since an entangling interaction with something, then presumably a planet with life could become a planet without life if left unobserved for long enough.
Not from the perspective of said life of course, since quantum effects are an observation of many universes, but if two life forms went too far apart, they might start to decay from each other's perspectives.
It'd explain why we haven't encountered a race that spans millions of...
Comment too long. Click here to view the full text.
>>8178387
First of all, the Fermi """"""paradox"""""" is not a real paradox. It essentially boils down to "hurr durr why doesn't reality behave like my infantile beliefs I acquired by watching shitty fiction movies". Bad news, kiddo, this is not how reality works. The universe is not obliged to host alien life only because some manchildren want their fantasies to be satisfied. Science starts with observation, not with belief, and if there turns out to...
Comment too long. Click here to view the full text.
>>8178387
>>8178408
jesus christ it's not even anime. Now they're straight up posting screenshots from animated porn games that include animals, dickgirls and rape.
>>8178405
The Fermi Paradox doesn't say "why haven't we found life in the universe despite all the cool science fiction having it".
It says "why haven't we found life in the universe despite the fact that any occurence of intelligent life would span galaxies in a fraction of the age of the universe and that there are quadrillions of planets from which possible life still could have reached us by now if they started spreading a cosmologically reasonable amount of time in the past".
As time goes on, "inhospitable" planets keep seeming more and more hospitable, the number of planets on which life could possibly evolve is staggering.
I work at a research firm that is very high risk low budget power generation research. Instead of giving me the title of research director, the man who funded the project calls me a methodologist. I came here to share a new technology being thrown under the rug by my boss who is from some island that isn't even a country and most likely will never know I shared this with anyone in my life time.
The technology we use to power the mans island which our boss said wouldn't be profitable, is made of a few very interesting components which I will list below. Anyone who knows how a turbine engine and simple moving parts work, are going to easily understand what it is we tried to do, with their imagination.
The turbine engine consist of two separate tubes with fluid inside of them.
1. In one tube is super fluid that isn't just super fluid, but, has tiny magnetic particles inside of it as well that saturate inside the fluid.
2. In the other tube is an extremely hot plasma that is kind of between gas and liquid due to the pressure in the tube. At some parts it's gas and other parts it's liquid.
3. There is an electrolysis device on the plasma side which generates some extra energy from the heat while still having enough heat to turn the turbine with pressure. The heat side is very complex because the tube has parts that have many smaller tubes.
4. The super fluid side has a kind a switch on the magnetic polarity of everything from what blades of the turbine are what polarity to what super magnets outside the tube decent to flip.
5. There is a copper coil shaped like a torus inside the cold tube which seems to help move the metallic magnetic flakes around.
You might be asking why so many parts and tubes for something that could be made more simple and the reason is that we were throwing everything at the wall to see what was going to stick. We managed to generate enough power to keep the super fluid to have the engine "efficient" and the rest of our energy is geo.
>>8178201
U wot m8
>>8178201
So where does the energy come from?
>>8178201
Point 3 is dodgy. You really want to convert energy from heat from as high temperature as possible to as low temperature as possible in one single step. An initial step using electrolysis to generate energy (how???) would mean lowering the temperature and is thus unlikely to be beneficial.
Something initially raises temperature. To be efficient you should look into this part.
Is possible to create a MAGNETIC perpetual motion machine? How do you think it can be done?
>>8178165
No it is by definition impossible
>>8178329
why ?
>>8178330
Why what?
What's /sci/ opinion on common core?
Good idea, absolute trash implementation.
>>8178106
Same problem as everything else in scientific school programs. The average professor is shit and has no idea what he is taking about
>>8178107
/thread
>be time traveller
>sit in my delorean
>enter coordinates
>Jul 02 2125 9:00
lets see how bad it will be
>accelerate
>FLASH
>suddenly i am in space because earth was moving during my timejump.
>i only moved trough time not space.
>mfw no spacesuit
>>8178012
I recognized that problem when I was a teenager. Congratulations.
IRL permaban thyself.
>>8178012
>earth was moving
>i only moved trough time not space.
This is more interesting than you realize. There isn't any fixed point "center of the universe". When your time machine jumps 6 months into the future are you in the solar system with the Earth on the other side of the sun, or is the entire solar system a googol kilometers away?
The Earth is moving relative to the sun which is moving relative to the center of the galaxy...
Comment too long. Click here to view the full text.
What is the mechanism behind free will? How does free will actually physically work?
>>8177987
You get will out of prison, he's innocent.
>>8177987
DUMB GORILLAPOSTER
fellow /sci/entists, I was going through an old coursera math course that was still up (signed up for it in 2014, started going through it last month) and today the course was closed. I got a fucking error message and I'm like 30% in. I'm so pissed & depressed at the same time.
what the heck happened to them? did anyone archive all those awesome courses or are they all gone now?
How about you get a fixed schedule for self-learning? Your shitty time management skills is why you only did 30% and were progressing slowly in the course and probably everything else you do.
>>8177730
how about you go fuck yourself? i needed pre-reqs before taking this course. and for your information, I was doing really well.
>>8177732
>swapping roles of OP and poster
Is geology a meme?
>>8177675
no. you are a meme
>>8177675
Geology is perhaps the most autistic science after neuroscience
>>8177913
What is the best way to destroy the world?
If you wanted human civilization to crash and never recover, what mechanism would be your best bet?
>>8177494
Leave them to their own devices? :^D
>>8177494
nukes
>>8177494
doomsday machine
>0th dimension: apoint
>1st dimension: a line
>2nd dimension: a plane
>3rd dimension: a space
nth dimension: a space of nth dimensions (n>3)
So what the hell are negative dimensions? Non integer dimension? Complex dimensions?
what is the ith dimension? One where God exist?
>>8177193
>negative dimensions? Non integer dimension?
Never heard of these.
> Complex dimensions?
[math]\mathbb{C} \cong {\mathbb{R}^2}[/math] so n-complex dimensions is equivalent to 2n-real dimensions.
>>8177193
You can extend our logic to define -1 dimensions.
When working in the usual dimensions, if you reduce the dimension of your space that just means it takes less information to define a point.
In 3 dimensions you might be on (0,9,2). In 2 dimensions you might be on (0.9). In 1 dimension you might be in (0). In 0 dimensions there is only a point so you are that point.
If you consider these spaces sets then the 0 dimension would be a unitary set and it follows that a -1 dimensional space is simply the empty set.
Are coursera courses ever worth doing or should you go rigorous (textbook) or go home?
>>8177171
I don't understand why you people rely so much on textbooks.
If there is a textbook about it, it's probably too easy anyway.
>>8177192
real high IQ men only learn from math papers
>>8177192
>rely so much on textbooks
As opposed to what? It's the most streamlined way to gain information on a topic.
