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The new /sci/ wiki
https://4chan-science.fandom.com/wiki//sci/_Wiki

(More resources in replies)
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>>
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To use MathJaX, put your TeX code between [ math ] ... [ /math ] tags for inline equations or [ eqn ] ... [ /eqn ] tags for block equations.

[eqn]\zeta(s) = \sum_{n=1}^{\infty}\frac{1}{n^s} = \frac{1}{\Gamma(s)}\int_0^{\infty} \frac{x^{s - 1}}{e^x - 1} \mathrm dx[/eqn]

Note: You may preview the output by clicking the TeX button at the top left corner in the quick reply window.

Additional supported file type on /sci/ is PDF.


Reminder: /sci/ is for discussing topics pertaining to science and mathematics, not for helping you with your homework or helping you figure out your career path.

If you want advice regarding college/university or your career path, go to >>>/adv/ - Advice.
If you want help with your homework, go to >>>/wsr/ - Worksafe Requests.

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Is it possible for there to be free floating stars or planets inside the enormous empty space between galaxes? How common is it for a star to exist outside of a galaxy or is there no such thing at all?

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If the diameter of the Milky Way galaxy was the distance between San Fransisco and New York, Voyager 1 would have travelled a total distance of 4.2 inches.
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>>16937160
It puts the size of the universe into perspective nicely. Or the size of galaxies anyway. There's been news about Voyager one reaching one light day of distance for the first time, that inspired me to make this thread
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>>16936850
You didn't change the size of Voyager 1 in your scenario, only the diameter of the Milky Way.
You created a Voyager 1 of gargantuan proportions relative to the size of our galaxy.
>>
>>16937407
My bad let's do that. The antenna of Voyager 1 is 3.7 meters in diameter. In the new scale where milky way is the size of USA, that antenna becomes 15.2 femtometers in diameter which is 2.7 times the diameter of an electron according to Wolfram Alpha. So the space probe is barely larger than an electron.
>>
>>16937466
>the space probe is barely larger than an electron.
You're saying a lot of silly things today, anon.
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>>16937469
Find a thread about 0.999... being equal to one and you find people saying a lot sillier things

Now that the dust has settled, who really won?

And how would their conversations look like?
>>
Gravity is effectively classical on large scales (described by GR), but it is likely emergent from a deeper, fundamentally quantum-mechanical structure of spacetime.
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>>16937131
Counterargument. Quantum mechanics is effectively classical on small enough scales and large enough scales, but its statistical/wavelike properties at intermediate scales are an emergent effect from discrete properties of matter interacting via a continuous-but-highly-nonlinear mediator (gravity).
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>>16937127
bohr was openminded to the fact he didn't understand how nature worked, so i'd say him
>>
einstein
all he said was quantum mechanics was incomplete, bohr was too sure about uncertainty, epr will be vindicated
>>
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Einstein was right about everything.
And Bohr was just a shitposter who didn't know any maths and was just inventing harmful things out of his head.
People elevated him too seriously. Maybe even on purpose, to weaken Einstein's positions and authority. But eventually Bohr's ideas is the reason all quantum physics is not just in crisis, it's in dead end.

Monty Hall doesn't make any sense and we've all been coerced to go along with it

>uh but actually it's demonstrable that your odds increase from 1/3 to 2/3 if you swap doors
No!
You're exchanging one chance for another, it's 50/50 regardless. The system is broken and everyone's too afraid to point it out because the consequences are dire
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>>16937450
I would say you could get a friend and have them pretend to be Monty hall and run the problem a few dozens times with you, but I am guessing someone so hopelessly contraian as yourself has no friends.
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>>16937450
>ou're exchanging one chance for another, it's 50/50 regardless.
Sure, but this is a public site. So the try to rot your brain anyhow. Evolution, BigBang, Relativity, Flatearth, MoonHoax, etc etc are in that line. Nearly everything that promotes here is a lie, truth is ignored, banned or pruned/deleted.
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>>16937450
Run a simulation a few dozen times and see for yourself.

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What's the IQ cuttoff for being made totally irrelevant by AI? I've been procrastinating making something of myself for a decade
>>
We don't need any more AI threads. We're full.
Actually, no, scratch that. We don't need ANY AI threads.
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>>16937398
Probably like the midwit meme in pic related. AI is basically focusing on the low-mid level white collar work. Which includes your clerks, assistants, secretaries, phone operators, entry/Jr level office/inventory/advertising/art jobs. People in trades, civic jobs, military, engineering and cyber security seem okay for now.

Jury is still out for medicine, law and research since machine learning is making strides in doing paperwork. Education is a toss up because while AI can affect some job prospects the bigger issue is low birthrate projections. Which reduces the "need" for staff and teachers at the local level.

In other words your 80-90 IQ grunts and +120 autists are having the last laugh.
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>>16937404
Okay so I'm pretty much firmly fucked then
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>>16937435
You're fucked if you go down the typical "path" that's been carved out by society for 95-115 IQ people. In other words liberal arts, business, law, fine arts and education college majors. Even some STEM programs like computer science and the softer sciences like psychology are on shaky ground because of A.I..

Depending on your interest and how old you are going the trade route then pursuing an engineering field that is associated with that trade (while getting some certs) is the way to go. There's also the military...but depending on where you live that might get in deep with things you may agree or disagree with.

Basically avoid the debt trap via college and focus on technical training.
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>>16937464
>going the trade route then pursuing an engineering field that is associated with that trade
I like that, thank you anon

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Is it theoretically and technically possible to develop/produce a silent chainsaw?
(engineering opinion)
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>>16937461
AI slop thread. Do not engage.

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Correct soldering procedure edition. Now with 30% more schizophrenia!

Previous Thread: >>16916381

This thread exists to ask questions regarding careers associated to STEM.
>Discussion on academia-based career progression
>Discussion on penetrating industry from academia
>Or anything in relation to STEM employment or development within STEM academia!
>If you have a question, before posting, read some of the older posts and ,if you can, try to answer their questions on your post. That way the thread isn't an endless log of unanswered questions.

Resources for protecting yourself from academic marxists:
>https://www.thefire.org/ (US)
>https://www.jccf.ca/ (Canada)

Information resource:
>https://sciencecareergeneral.neocities.org/
>*The Chad author is seeking additional input to diversify the content into containing all STEM fields. Said author regularly views these /scg/ threads.

No anons have answered your question? Perhaps try posting it here:
>https://academia.stackexchange.com/

Comment too long. Click here to view the full text.
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>>
I did not get a "worlds biggest genius" tramp stamp to get treated like this by the economy. I just didn't.
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>>16937259
literally me.
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>>16937280
>"worlds biggest genius" tramp stamp
did you get a fields medal? a nobel prize?
>>
>>16937447
close, a FAANG internship
>>
so how do you guys get better at ranked PVP?

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Science is a few things:

1. Knowledge (this is where the word comes from) to be acquired and information that can be applied (technology, chemistry, cooking, etc, are all applied sciences)
2. The method of “fuck around and find out” (causality/repeatability as it is - with the additional nuances of the reproducibility crisis - each stroke of a paint brush won’t be exactly the same - things like the big bang already happened - etc) which is the bare minimum of science - “remember kids, the only real difference between proper science and fucking around is writing is down”
3. The scientific community and overall consensus, peer review, scientific dogma (consider that half of the scientific community can’t even tell you what a woman is - it is perhaps a borderline cult at present), etc, that ostracizes dissent and divergent thinking
4. Physics, nature, reality, as it is - Einstein himself did not see science as merely something to apply in the one sided sense; he saw it as a background symphony, playing its cosmic tune independently of our ability to listen in; it lies in wait for all time; “the music of the spheres”; he directly compared it to Mozart “locating” already existent beauty, or harmony, while people like Beethoven merely constructed their music

Any questions?
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>>16935316
Scoence is a natural philosophy under which unobserved phenomena are extrapolated from observed phenomena.
It is not the knowledge itself.
It is not the way you aquire knowledge.
It is absolutely not a collection of institutions.
It is a world view through which one can attempt to understand the natural world "as it is."

At its core is the concept of uniformitarianism. That is "the fundamental nature of reality does not vary with space and time." If you do the same thing in two places at two different times, the same outcome will occur. Otherwise, there is something different about what you did.

Any questions?
>>
>>16935316
>Rhetorical question
>Answers:
>1. Etymological fallacy
>2. Boomer meme
>3. Tranny derangement syndrome
>4. Einstein
9/11 made me reply
>>
>>16935466
>Etymological fallacy
Cope more retard
>>
I love how simple science is at its basest and yet people are pretentious enough to pretend that it’s not
>>
>>16935316
Cool.

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Is trigonometrizing apartments (I know it doesn't work well with automobiles) a way to use space more efficiently?
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>>16934478
All furniture is made with flat walls and right angles in mind.
Also
>Entering through the kitchen
>>
Bees have this sussed, we should all live in hexagons
>>
>>16934478
A circular outer wall minimzes surface area - but since buildings tend to be near other buildings, hexagons to maximize internal area for multiple structures. >>16937232
Problem is that hexagons are not self-similar, so you can't just make your furniture hexagonal and have it neatly tessalate, even if hexagonal furniture was a good idea (it probably isn't). For that you want everything square. There are other things that can be done with exterior shape but there's no way I'm posting them here because not all of you are entirely dim and working without credit gets tiring eventually. So don't mistake having some conclusions for it being a closed problem
>>
>>16937283
What do you mean hexagons aren't self similar?
>>
>>16934478
Shitter's too close and sound from its door has a DIRECT PATH OF TRAVEL to people EATING at your kitchen. Now everyone can hear my sloppy, BRAPPy diarrhea and the tinkle-twinkling of my seated urination.
Please think this through better neckst thyme.

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Gamer Wrist edition

Unfriendly reminder:
>DO NOT GIVE ADVICE
>DO NOT FEED THE NURSOIDS
>DO NOT ENGAGE WITH PREMEDS
and most importantly
>DO NOT REPLY TO PSYCH POSTERS
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>>16937105
You suck it up and deal with it unless you join a private practice where you are equals. That’s what I did, but I’m a radfag so it was easy.
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>>16937172
arent radfags going to get fucked by AI? im in neuro.. went into rehab cause its way easier but every damn fucking thing i write up gets questioned by the oberarzt (attending physician). how do you think AI will affect radiologists?
>>
>>16937105
it's like dealing with anything in life lol. did you not have parents as a kid?
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>>16937423
elaborate. i did have parents, but they werent super strict or assholes, lol. so i dont understand what you mean.
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>>16936643
>That's really cool anon, what kind of art are you going for?
If I'm being honest, anime. I don't even watch or follow anime anymore. I have fond memories of a series that I used to watch in my teenage years and it's pretty much irrelevant now. That said, I like to try to contribute to fan art and such. Of course, I can draw other things. In general, I think it's important that I try to have a creative hobby.

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Saying ificial Intelligence makes way more sense then artificial Intelligence.

Artificial comes from Latin artificialis,
from artificium ("craftsmanship" or "skillful work"),
combining ars ("art" or "skill") + facere ("to make").
>Literally, "artificial" means "made by art/skill"

"Ificial" could evoke "made" or "crafted" intelligence — intelligence that is produced, fabricated, or engineered rather than innate or biological.

Isn't that way more logical to say Ificial Intelligence?
>Less letters too
>>
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>>16937332

It´s a machine spirit. Not even gonna argue this. :p
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>>16937375
>>16937332
botted garbage.
>>
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>>16937332
You will say it the way you're told to say it.
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>>16937377

Don´t make me get the universal solvent ... :p

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Basically I need to raise my IQ by one standard deviation or two above the current one I posses.
it would significantly improve my life.
>>
>>16937155
Eat your veggies. Get proper sleep. Exercise. Reduce screen time. Take some nootropics.
>>
>>16937179
I'm sure this will give me like 5 points at most. but I need a little more.
why is modern science so shit?
>>
>>16937183
It won’t even give you 1 point in FSIQ or even 5 points in sub tests that measure FSIQ in composite you retard. Just cope infinitely
>>
>>16937194
I just need a minor bump man :(
I'll go bump my head instead
>>
>>16937155
You aren't asking for a minor change. 1SD is like a change of species or something. IQ is 95% baked into the genes. Sorry.

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Do you know how to calculate square roots by hand?
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>>16936394
I use the Taylor series for [math]e^{i\theta}[/math], where [math]\theta[/math] is the angle you're calculating the cosine of.
>>
>>16936387
sqrt(3) is the year george washington was born
>>
For calculating pi by hand, Machin's formula is convenient:
[eqn]\pi = 16 \tan^{-1} \left( \frac{1}{5} \right) - 4 \tan^{-1} \left( \frac{1}{239} \right)[/eqn]
This follows readily from
[eqn]\frac{(5 + i)^4}{1 + i} = 478 + 2i.[/eqn]
[math]\tan^{-1}(x)[/math] can be approximated with the usual power series.
>>
>>16932618
It's also worth mentioning that this can be easily extended to cube and higher roots.

To find [math]\sqrt[3]{N}[/math]:
Start with a guess G.
Solve [math]G \cdot G \cdot X = N[/math].
Your new better guess is [math]\frac{G+G+X}{3}[/math].
Repeat.

This is equivalent to using Newton's method but doesn't require calculus to explain.
>>
>>16931343
My father taught me fifty years ago. I forgot, but then I worked it out again.

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I took a coom algebraic class but it was way too hard and the textbook was thick. I sucked. Any tips?
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>>16937327
The issue with commutative algebra is that it feels so unmotivated, and as such, a lot of the results just seem to come of nowhere, so even though the proofs might be relatively simple, it seems impossible to come up with them yourself.
>Any tips
Struggle through a class in algebraic geometry, and then have a second go at commutative algebra. Being completely lost and confused, and bashing your head against the wall in the beginning of AG and CA is almost a rite of passage for any mathematician who isn't a genius.
>>
>>16937327
Read and do the exercises in ch 1-3 of Atiyah-Macdonald to understand the basics of commutative rings and modules. Then start learning algebraic geometry. Fill in the rest of commutative algebra as you need it. I suggest reading "The Geometry of Schemes" by Eisenbud and Harris to get real geometric intuition for this stuff.
>>
>>16937327
stop wasting your time on 4gay and the internet in general if you want to git gud at math


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