Archived threads in /sci/ - Science & Math - 45. page
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What was his problem, /sci/ ?
>>8169780
It is society's problem, not his.
>>8169780
Autism.
He's right. His methodology of getting his point across was shit.
>>8169780
Isn't that Terence McKenna?
I'm tired of our normie planet
How would someone feasibly create an artificial orbital ring that doesn't periodically demolish cities with craters?
>>8169744
we already HAVE artificial orbital rings.
blow up an asteroid in orbit and hope it doesn't recoalesse.
>>8169744
Use lots of tiny particles such as quartz sand. Or dry ice that will sublimate before reaching the ground.
Demolishing cities isn't the biggest problem, destroying satellites in orbit will be a huge problem.
One Rube Goldberg grade solution is to put huge numbers of absolutely gigantic space mirrors in high orbit, above geostationary orbit. It will be a nice view but you will have to say goodbye to night time darkness.
Did you see this video? https://youtu.be/UT2sQ7KIQ-E
What does /sci/ think of nootropics?
Do they work?
Results?
Studies pertaining to nootropics?
Is it just snake oil?
I haven't had any work, but I've been on more prescription psychotropics than most people can name. Almost all to no result, or side effects. The stims, benzo, mood stabilizers didn't work, but an MAOI might have.
You'll have to be careful about what you get. Ironically since the science has been advancing, the more and more specific the mechanisms of action become, the more we get side effects. something like IDRA21 might cause brain damage if taken for extended periods. Unifiram, and especially sunifiram, might have side effects from increasing turnover...
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>>8169698
I started taking modafinil three weeks ago and I've noticed varying effects on my mood and cognition.
The good
Rediculous memory and retention when studying
Increased cognition speed
Urge to complete tasks
Better social life (humour is strangely easier to conjure)
I have CFS, On it It's like i don't have CFS
The bad
Feels a bit 'racy' like a massive caffeine hit and can get irritable after a while
Always have to be doing something, Watching TV is awful on modafinil
I don't eat as much as I used to
Binding agent causes my digestive system to react nastily
The ugly
It's narcolepsy medication for a reason.
Probably the best out there if you're looking for a serious boost in brain power. Closest you'll get to NZT-48 anyways.
>>8169698
Your mind is weak if you need them.
>finished engineering degree
>Don't know what greens theorem is or what it signifies physically
>similarly with del, nabla, eigenanything, matrix ranks, singular matrices
>and this is just the stuff I rememer off the top of my head
>Never done anything relating to converging / diverging infinite series
>line integrals????
Can I even be considered human? My university is...
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Except you're not a math autist so you're fine. Your job is to design important stuff, not calculate things.
Though I suspect you're a role-playing troll.
I'm in third-year EE. The worst math we had this semester was square roots lol.
>>8169674
what country is that uni in OP?
Calculus II (as per the typical American course) is a complete waste of time. I'm not a disgruntled student in calculus II. I just graduated with a math degree and did the baby analysis and so on.
Why on Earth do we waste so many people's time teaching them how to calculate obscure integrals? All they really need is to be able to integrate polynomials, integration by parts, sin/cos, maybe a few other tricks here and there.
They will likely never encounter integrals like these; if they do they can easily reference a text .
This is precious effort...
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>>8169673
How little math did you do in your degree that some difficult integrals NEVER showed up?
>>8169704
I think OP just doesn't realize he's Autistic.
>math notation makes sense to me so its good for everyone
>>8169704
I didn't have to look up an integral a single time. I also didn't need a calculator after freshman year.
Which is not to brag: I've forgotten all those clunky integration methods and I'm no number cruncher. As far as I can tell this is typical for a math major.
>Green's theorem only applies to "simply-connected" regions
So when I take the line integral of a the unit circle according to vector F, I get 2pi. Is this because the curl leaks out of the origin where F is not defined?
>>8169650
You'll learn about that when you get to know the generalized Stokes theorem and complex analysis. It's got something to do with poles and residues. You can imagine it like some "source" or "charge" being located at that singularity, so that some "force field" goes through the region.
>>8169650
The vector field in the pic is Hodge dual to (a representative of) the generator of the first de Rham cohomology group of the punctured plane. Since this group is non-zero, Poincare duality for compactly supported cohomology easily implies that the cap product with the generator of the first homology of the same region is non-zero.
>>8169731
Why do people do this ?
Would it theoretically be possible to kick a bullet out of the air given that you hit it perfectly from the side and time it exactly right?
>is it possible to deflect a 762 m/s lump of metal with your small frail foot clothed in wool and rubber
The only way to do it that slowed its momentum would result in great injury to your foot. If you "timed it perfectly" you'd just redirect it.
So, not really.
>out of the air
what does this even mean? a kick to the side isn't going to impart any forward or backward change in momentum so at best you'll just deflect the path
it is probable, if not likely, that an advanced civilization lives under the surface of Mars, deriving energy from its heat, and its likely they live in a type of virtual reality environment, so they don't care about us or the external world because they've been under for so long. But if we woke them up, they might seriously fuck our shit up.
>>8169606
What?
>>8169622
Exactly.
thats a solidified volcanic splash btw and not a headcrab
I can logically see why a mathematical proof works by following the steps of its derivation. Although, I don't feel like I understand on a more fundamental level what is happening, why it works and how someone figured it out.
How do people gain that fundamental understanding of math (what would be called "intuition" in other areas) contrasting the pure mechanical aspect?
>>8169386
write proofs instead of just reading them.
>>8169386
Unfortunately what you desire can only be gained by being born with it.
In other words you will always be a brainlet.
>>8169386
intuition isn't intuitive. it's more based on experience.
