Archived threads in /sci/ - Science & Math - 76. page
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Come up with a scientifically sound model of governance for a unified humanity.
Go ahead, /sci/, prove you aren't more retarded than /pol/
>>8140252
Prove that such a solution exists.
>>8140252
Define "humanity".
>>8140252
Kill all jews and niggers
Hey /sci/! I've been reading John R. Taylor's Classical Mechanics, and I have this problem that fairly few problems have a solution in the back of the book. I've searched online, but I have found no resource that has a reasonable amount of solutions (except for one, that hides them behind a paywall...). I'm not necessarily talking detailed solutions here, it would be enough if I had a list of the end results, so I could check whether I fucked up or not. Since many people on this board self-study, or just study from a given book as part of their course, I...
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Comment from the /sci/ wiki physics textbook recommendations section:
>Schroeder Thermal Physics intro is useless for self study. There are no answers to the questions. Also he covers far too much material and much of it ends up being superficial. He has a foot in both camps of Stats physics and thermodynamics and leaves the reader very confused (eg the coverage of ideal gases). Also for an intro book there are far too few worked examples. Kittel and Kroemer Introduction to Thermal Physics is a much better option.
>what if someone posts a wrong solution?
Then people could decide in the comment section or something, basically that's how wikipedia editing works already, and it works pretty well.
It would also be useful to color-code solutions, like red means its directly from the book, purple means that it has been debated before, and there was a consensus, and black means it's a fresh one. I'm not saying that a solution from that book can't be wrong, but it's pretty unlikely.
What do you think, /sci/?
Can /sci/ please explain to me what I'm looking at here?
A magnetic monopole
>>8140217
a free carbene?
looks like it could be methylene (the simplest carbene) all by itself
https://en.wikipedia.org/wiki/Methylene_(compound)
>elementary geometry
>differential geometry
>algebraic geometry
>algebraic topology
>discrete geometry
>p-adic geometry
>stochastic geometry
What other types of geometry are there and how do I go about learning them? What is the most general theory of geometry encompassing most of the above or even more?
combinatorial geometry is the hardest...
You can spend your life making up theories for your cute special cases, but combinatorics will ever be the only true field of math that can't be tamed by some meme theory by itself
https://www.youtube.com/watch?v=7-GTDoRf0Gs
>>8140130
"differential geometry" is fairly broad
so
>Riemannian geometry
>Geometry of Bundles
>Symplectic geometry
>Complex geometry
>etc.
You said >algebraic topology
That is not geometry. Hence the name "topology".
Also there is
>arithmetic geometry
>non-commutative...
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Can someone PLEASE post a picture depicting an object from non-commutative geometry?
Is non-commutative geometry basically the same as anabelian geometry?
Can somebody explain to me the blackhole "firewall" bullshit? I don't really believe there is a burning wall of fire that incinerates anything that passes trough. This isnt anime
Why would a firewall let anything through? That's the opposite of the point of a firewall.
>>8140052
>I don't really believe there is a burning wall of fire that incinerates anything that passes trough. This isnt anime
leaving out all the shit about entanglement, why would you find this hard to balieve?
you have lots of energy falling into the black hole, getting ripped apart, creating a mixture of high energy particles and death that incinerates anything trying to get into the black hole.
if black holes are perfectly spherical, it makes intuitive sense
So what is that one trick that will make me work really hard? I'm not asking how to increase my IQ or become superman, I just want to be self motivated rather than needing to be assigned work
Put a poster of a bitch with a nice butt infront of your wall. everytime you look at it, imagine getting money and fucking that ass.
works for me
>>8140050
you can't.
you just don't belong in this society. I don't either.
Either that or you don't care enough about what you do, and that's not what you really wanted to do in the first place.
>>8140050
>I just want to be self motivated rather than needing to be assigned work
Just major in something you are passionate about and can see yourself doing and enjoying at the professional level.
If you can't do this then there is no trick. You will just need to force yourself and you will absolutely hate it and probably consider suicide.
I have been thinking over perpetual motion machines before and the closest idea that would work as one would be a magnetic object that would orbit at a very high altitude to minimize atmospheric drag through a coil. The object would have to be reboosted to keep it in place but wouldnt this make more energy from purely gravity from the centripetal force or would there be outside forces acting too much on it to generate energy?
>>8140019
Why do stupid people love magnets?
>energy from purely gravity
that's newly
WHY IS EVERYONE ON SCI A DISGUSTING HS DROPOUT WHO THINKS THEY'RE THE NEXT EINSTEIN
Sup /sci/,
I usually hang out on /g/ but this one fits this board better.
I'm working on a gambling type website and I need some help with calculating win probabilities fluidly.
I want to average 10% hold.
Given a random number between let's say 0 and 100, I want the equation to return me a win value with the constraint being: the sum of all winnings times their probability must be 0.9 as to give me 10% hold.
So, winning nothing, or less than 1 would have to be more likely than winning 100.
I imagine the curve must look something...
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correction.
What I need looks more like this
With
f(0)=-1
and [ sum n=0; 100 | f(n) ] = 0.9
I want a share of your revenues from that website.
>>8140026
You sure?
Your OP makes it sound like you want something like this.
If Facebook wasn't stupid enough already.
http://www.iflscience.com/editors-blog/homework-could-have-impact-kids-health-should-schools-ban-it/
>>8139991
Ever since I graduated high school and got into university my overall performance has gone up. I attribute that a bit to the fact that there is literally no use at assigning homework for pure mathematics and thus we barely get anything of that nature except for random 'prove this trivial lemma that follows for the class that I could not prove for you because time is up but you should still know it' that take about 5 minutes of deep thought and then 2 minutes of writing.
Homework is shit and I cannot...
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>>8139991
I never did homework at home in grade school, and I'm not the only one. We could just easily do it in the fifteen minutes before classes started in the morning. What are they even complaining about?
That said, individual study and reflection without someone holding your hand through it (re: doing it for you) is where all of the learning happens.
>>8139991
Meh, I agree with the others.
The most useful "homework" usually involved researching stuff I did not know or learn in class, and spending time to find good ideas and put them in a nice form for a long essay.
Kids should spend time doing other stuff than working at home.
Classes should become much harder and denser though, I feel like I wasted my first 18 years.
Why doesn't this work? I know this is a shitpost and I'm an idiot but why doesn't this work?
Inertia is not magic, fan will just stop (one of blades will get stuck to the magnet).
>>8139985
thanks for the help
>>8139992
did you really need assistance to think this through ?
What does /sci/ think about dyson spheres?
personally i think they are a possibility and that human civilization will probably build in the future
Is the enerhy budget for this sort of thing even possible? It takes a huge investment, not to mention mass. Is that possible? And when it's done will there be sufficient return on said investment?
>>8139884
The amount of energy "generated" by a the sphere makes it all worth it, i believe.
Although the materials and the engineering is the problem
>>8139880
Anyone who could build one wouldnt need to
Are there insentient human beings among us?
>>8139801
Niggers and rednecks
>>8139816
pick a side
>>8139801
Aww, she is so cute, is the baby yours?
Is this a good book for the summer? (hs student)
Which books do you suggest me?
>>8139787
Get a real textbook.
>>8139808
Almost every one of those books are shit.
>>8139810
>I can't understand then
>Therefore it's the books' fault
way to fail
I don't get it
>>8139682
-1/12=-1/12
>>8139684
they both equal 2
>>8139682
[math]\Sigma \frac{n}{2^n} = \Sigma n (\frac{x}{2})^n |_{x=1} = \frac{x}{2}\Sigma n (\frac{x}{2})^{n-1} |_{x=1} = x\frac{d}{dx}\Sigma (\frac{x}{2})^n |_{x=1} = x\frac{d}{dx}\frac{2}{2-x} |_{x=1} = x\frac{2}{(2-x)^2} |_{x=1} = 2 [/math]
[math]\Sigma \frac{2}{2^n} = \frac{2}{2-x}|_{x=1} = 2 [/math]
Why is Bill Nye seen as such a huge voice in the scientific world despite him only possessing a Bachelor's degree? Is it only because he had a popular TV show and now he's a "FuNNY MeMe xDDDD"? Or am I just missing something? No hate towards Nye though, just curious.
>>8139249
He's entertaining. That's it.
>>8139249
No one apart from American millennials knows him
