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/sci/ - Science & Math

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11730370 No.11730370 [Reply] [Original] [archived.moe]

This is a relatively recent phenomenon, and there just hasn't been enough time yet for these kids to grow old enough for us know how bad it is.

But tell me what you think /sci/—how FUCKED are these kids' brains? Will giving an ipad to sub-10 year olds be made illegal at some point? Are these "parents" creating broken children?

3 replies omitted. Click Reply to view.
>> No.11730490

>>11730420
retard

>> No.11730492

>>11730490
This.

>> No.11730498

>>11730409
Dude, don't post the abstract to a super technical paper you only pretended to read.

>> No.11730510
File: 256 KB, 1168x1520, Jacques-Arsène_d'Arsonval.jpg [View same] [iqdb] [saucenao] [google] [report]
11730510

>>11730498
You need to think up a new line. You can't say what someone did or didn't read. Maybe you're just projecting.

>> No.11730587

>>11730490
no u



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11730358 No.11730358 [Reply] [Original] [archived.moe]

What are some science degrees that allows you to work remotely anywhere in the world, besides CS?

12 replies omitted. Click Reply to view.
>> No.11730716

>>11730545
>>11730626
https://www.youtube.com/watch?v=qYodWEKCuGg

>> No.11730746

>>11730708
I dont see how software and big data could stop growing, anon. At least give a good argument.

>>11730713
Changing the subject a bit, what are some interesting careers if you want to work on cool researches like those guys from NASA in Antarctica?

>> No.11730769

>>11730746
>I dont see how software and big data could stop growing, anon. At least give a good argument.
code monkeys get pumped out 10 times faster than the demand is growing and the jobs require skills attainable over a weekend

>> No.11730823

>>11730600
Get an American degree. If you have to get into a community college and transfer to a 4 year university

>> No.11730912

>>11730746
Second poster here, but would also like to comment that yes software and data is here to stay.

Also a lot of the high paid jobs are reserved for engineers with a special skill, but there is high paid low skill paths too.

I don't know about NASA, but they asked me to apply to a 6 month position to an Antarctic base once. Even if I got it I don't think I would've gone. Only do it if you don't have any relationships etc.



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11730328 No.11730328 [Reply] [Original] [archived.moe]

Hey anons yesterday I was browsing 4chan as usual and then I came upon this pic, it was the 1000th time I saw it but never knew if it was true or not. Can you confirm or dismiss it?

34 replies omitted. Click Reply to view.
>> No.11730758

>>11730620
>violent white destructive riots in our nation's history
Holy shit that’s so wrong.

>> No.11730760

>>11730328
it is true
t. biologist

>> No.11730774

>>11730748
>be non violent against the small percentage of cops who are actually out to get them, they'd do a lot better.
You think people are psychic?

>> No.11730801

>>11730774
yes you're right, i mangled that thought. i meant to say if they toned down their level of violence in general, which is very very high, whether black on black or black on cop (higher than cop on black violence), then there would be far fewer incidents going into the future, as only the small percentage of truly unrepentant racist cops would abuse innocent blacks, and it would be clear what was going on. police ramp up the violence because blacks are highly violent at baseline (again, average differences, i know smart well behaved blacks cringe at this whole business)

>> No.11730830

>>11730801
But the level of crime and violence has dropped though.



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11730319 No.11730319 [Reply] [Original] [archived.moe]

Does anyone know of any software capable of doing calculations with finite categories? I'd like to be able to input two finite categories and be able to automatically find functors between them and hopefully even natural transformations between those functors. I'm tired of finding Functor categories by hand so I thought that I would ask here if you've heard of any software that could help me.



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11730279 No.11730279 [Reply] [Original] [archived.moe]

Disprove me via contradiction without using limits.

3 replies omitted. Click Reply to view.
>> No.11730671

>>11730279
0 = 0*2
so
0/0 = 2
therefore
0 = 2

>> No.11730689

>>11730357
No, 0 * undefined is NaN.

>> No.11730699

>>11730671
My proof shows that any number other then 0 causes contradictions. It's a proof by contradiction.

>> No.11730742

>>11730699
Your image is incoherent garbage. No one could ever prove you wrong because you're not even wrong. You haven't fucking said anything.

8/10 bait; I couldn't resist

>> No.11730793

>>11730742
How is it wrong? Where is it incoherent? It seems pretty coherent and sensicle to me.



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11730194 No.11730194 [Reply] [Original] [archived.moe]

Hello all. I've been working a few years in industrial machinery and almost all of the new tech improvements have to do with cameras, communications, etc., so I've been very interested in self-studying optics and photonics. I took mechanical engineering in college so I dare say optics is the area of physics I have the least instruction in. Does anyone know of good introductory resources or textbooks I can check out? Help this 30 yr old boomer spread his wings!

>> No.11730443

>>11730194

Bump for interest

Don't forget to also brush up on programming and control systems!

>> No.11730679

>>11730443
Of course! I've already started refreshing my crusty knowledge of Visual Basic and Matlab. Unfortunately I'm a total brainlet when it comes to PLCs. My end goal is to be an applications engineer at a photonics supplier near me.

>> No.11731016

desu idk which book is the best but i know the physics department at my school uses hecht



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11730172 No.11730172 [Reply] [Original] [archived.moe]

How did planes measure their speed in the past? Any instruments or calculations?

>> No.11730190

Same way cars did — a speedometer.

>> No.11730278

>>11730172
their airspeed or their relative ground speed?



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11730143 No.11730143 [Reply] [Original] [archived.moe]

>In the adiabatic process, since the heat is 0, how can it be possibile that heat capacity times ΔT is 0?
>In the adiabatic process, what's equal to 0? The heat or the change of heat?
I read somewhere that Q is 0, and somewhere that ΔQ is 0. Which is 0?
>If I compress a gas I have a negative Work, so the equation becomes Q = ΔU-W . But shouldn't the heat increase? If the Work is negative, how can the heat increase?

>> No.11730391

Negative work = negative heat = heat goes away from the gas elsewhere



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11730139 No.11730139 [Reply] [Original] [archived.moe]

Do factorials of matrices exist?

>> No.11730171

>>11730139
not that i have heard of anything like it, but you could define it, probably only works with square matrixes tho

>> No.11730176

>>11730139
Only on a square matrix, and it wouldn't make sense unless each coefficient was the same. You could then derive that [2,2;2,2] factorial is just [2,2;2,2]x[1,1;1,1] = [4,4;4,4] and so on. Pardon my notation, I am a Matlab scumbag.

>> No.11730196

The gamma function is a holomorphic continuation of the factorial and thus continuous in almost all of [math]\mathbb R[/math], so we can define a matrix function (so long as the eigenvalues aren't [math]-1,-2,...[/math] or other negative integers) through a power series or the Jordan form as in: https://en.wikipedia.org/wiki/Matrix_function
See also: https://math.stackexchange.com/questions/1634488/how-could-we-define-the-factorial-of-a-matrix
And: >>>/sci/sqt

>> No.11730200

>>11730196 (Me)
ah, and of course this assumes a square matrix as other anons have pointed out. doesn't make a ton of sense if you can't compose the matrix with itself (as is the case for non-square matrices)

>> No.11730262
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11730262

>>11730139



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11730120 No.11730120 [Reply] [Original] [archived.moe]

Find the pattern that the grey and green shapes have in common. Both the grey and green dotted shapes will correspond to the shapes at the bottom. You have to say which ones they correspond to and why.

>> No.11730132

>>11730120
the answer is b

>> No.11730140

B follows the pattern of which colour? Green or grey

>> No.11730141

green green gray green



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11730093 No.11730093 [Reply] [Original] [archived.moe]

>struggling to understand pi
How does pi stay the same even when the circle changes size???

9 replies omitted. Click Reply to view.
>> No.11730609
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11730609

>>11730570
>Here's a simple proof.
>OP guy doesnt know what a ratio is
You are the autistic one in this case my friend.

>> No.11730625

>>11730570
you're an idiot

>> No.11730673

>>11730093
I am curious jet i know only 3 normal people (not different able or sth.) Who cant grasp simple geometry. 3 Out of 80 i m sure the dont get this. Maybe 6 more who cant grasp more complex topics like perspective. But if i look what people write on the net, there seem to be much more stupidity out there as 10%
Did people hide there retardation? Did the fake to be smart?

>> No.11730686

>>11730673
And yet i dont even try to find retardation, the opposite is true and still...

>> No.11730959

>>11730673
>Did people hide there retardation
yes. They get through high school subjects through pure memorisation. They don't understand much.



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11730051 No.11730051 [Reply] [Original] [archived.moe]

is consciousness a wave or a particle?

>> No.11730079

>>11730051
Watch these:
https://www.youtube.com/watch?v=LXFFbxoHp3s

https://www.youtube.com/watch?v=Xx0SsffdMBw

https://www.youtube.com/watch?v=6018zvWyAs0

https://www.youtube.com/watch?v=Mm6Mt9BoZ_M

>> No.11730085

we just don't know
all the theories I've seen are unfalsifiable

>> No.11730121

>>11730079
no
>>11730085
no
>>11730051
Consciousness is much more complicated. To reach enlightenment, we have to achieve Brahman Atman. This is done by releasing our consciousness into the universe of consciousness, and being accepted.



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11729986 No.11729986 [Reply] [Original] [archived.moe]

What's the scientific explanation for the pareto principle? Why so much phenomenon follow it?

>> No.11730046

>>11729986
>100% of masculine ejaculations are caused by OP's blowjobs
this phenomenon doesn't seem to follow it tbqh

>> No.11730301

>>11729986
>disproportionate things exist
Whoa.

>> No.11730315

>>11729986
Its just recognizing that a lot of thinga gain less output with more input. Basically that a lot of things have a sort of square root graph, although thats not really accurate but Im so tired i cant remember the names of these fucking graphs. Basically they approach a horizontal asymptote. Square roots dont do that but they look like what im blanking on.

>> No.11730337

Richest 20% 82.70%
Second 20% 11.75%
Third 20% 2.30%
Fourth 20% 1.85%
Poorest 20% 0.4

Exactly how getting laid works except, money is less a factor.



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11729944 No.11729944 [Reply] [Original] [archived.moe]

Hi /sci/entologists! Have any of you tried to do math animations before? What software did you use? Wolfram Animate[] can do great things, but recently I started getting into Manim (https://github.com/3b1b/manim), and I really like the looks of it. However, it can be clumsy sometimes. Any other recommendations?



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11729892 No.11729892 [Reply] [Original] [archived.moe]

What's your favorite element, /sci/? Mine's fluorine

11 replies omitted. Click Reply to view.
>> No.11730247

>>11729892
fun fact:
in my language, "Zir" means "under", and "con(kon)" means ass
so you can think of zirconium as something like underassium

>> No.11730573

Te because I did my masters project on Zinc tellurite glasses :^)

>> No.11730576

>>11729892
Pd

>> No.11730589

manganese

>> No.11730591
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11730591

>>11729892
Tantalum. I will shoot anybody that disagrees with my Ta-180m gamma ray laser.



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11729798 No.11729798 [Reply] [Original] [archived.moe]

>walnuts are a brain food
heh

>> No.11729800

>>11729798
honestly i think drinking too much roasties is bad for you but one roastie a day is fine.

>> No.11730226

>>11729800
>bot



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11729750 No.11729750 [Reply] [Original] [archived.moe]

Peak of sophistication...sometimes it feels that way big time. Note: technological ≠ sophistication

3 replies omitted. Click Reply to view.
>> No.11729783

>>11729765
Cultural sophstication

>> No.11730229

>>11729750
>Scientifically speaking, [insert non-scientific comment/question here]

>> No.11730368

>>11729750
i FOR ONE, AM ABSOLUTELY DISGUSTED JUST BY THE VERY THOUGHT OF AN ENTIRE SOCIETY SQUANDERING SO MUCH HUMAN TIME, ENERGY AND PHYSICAL MATERIAL RESOURCES TO CREATE THESE RIDICULOUS MONSTROSITIES IN THE NAME OF RETARDED RELIGION MUMBO JUMBO

THIS WASN'T ADVANCED AT ALL. IT WAS PURE AUTISTIC RETARDATION

>> No.11730401

>>11729750
If you mean the industrial revolution 1750-1850, then yes. We are but a shadow of their former glory.

>> No.11730654
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11730654

>>11729750
theres evidence for it for example ancient greece is a case of people with very high median IQ and we are still marvelled at their insight... then they had a "progressive" decline to what it is now:

25:06
https://youtu.be/UES_tpDxz9A?t=1506
>a higher IQ group conquered the lower IQ group... first there was the neolithic native greeks they were replaced by minoans then by myceneans and this group would be finally the responsible for all the ancient greak esplendor... then theres a long time of "progressive" decline to what we have now in modern greace.



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11729701 No.11729701 [Reply] [Original] [archived.moe]

>Brodmann area 9 is basically nonexistent
>shit working memory
>shit attention span
>shit self-discipline
>socially retarded

How is your prefrontal cortex game, anon? Maybe you know some *sloped* scientists that make it? Post them in this thread, so sloped-bois can feel better about themselves.

4 replies omitted. Click Reply to view.
>> No.11730049

What the fuck is this nonsense

>> No.11730077
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11730077

>>11730049
>nonsense
Just another truth, suppressed by *academy*

>> No.11730115

>>11729701
>shit working memory
you just want to remember everything you see, touch, smell and hear and because you cant you wanna get diagnosed as having dementia just to get those prescription medicine.

>> No.11730402

>>11729701
cute eyebrow OP

>> No.11730440

>>11730077
looks like hegel



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11729693 No.11729693 [Reply] [Original] [archived.moe]

Are Europeans and Middle Easterners the same race from a genetic standpoint?

14 replies omitted. Click Reply to view.
>> No.11729933

>>11729836
I didn't say it was impractical. I said it was arbitrary/bunk and not totally reflective of what is meant by the category race.

>> No.11729943

>>11729933
>not totally reflective of what is meant by the category race.
The point is to base the category on something solid so that it gets a clear meaning.

>> No.11729954

>>11729943
You're trying to be too concrete about a messy division if you just say "muh FST"
I can divide euros and middle easterners, they are obviously different, but not at the level of country, so its appropriate to apply the category "race".

>> No.11729957

>>11729943
also see >>11729719

>> No.11729960
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11729960

>>11729748
You should post the original, also it's from an old paper based on only 120 allele frequencies and Nei's genetic distance was used not fixation index.

Cavalli-Sforza, L., Piazza, A., Menozzi, P. and Mountain, J., 1988. Reconstruction of human evolution: bringing together genetic, archaeological, and linguistic data. Proceedings of the National Academy of Sciences, 85(16), pp.6002-6006.



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11729681 No.11729681 [Reply] [Original] [archived.moe]

Which type of water will hold more coldness, super salty or distilled? Basically I'm comparing like if you freeze a brick of wood and a brick of steel, steel will be cold for much longer and stronger. I'm doing cold training and I want to freeze a plastic bottle of water so I'm thinking which water to use.

15 replies omitted. Click Reply to view.
>> No.11730239

>>11730232
Damn, but is it a good for my intentions or bad? Should I make it slightly salty? Btw, what about alcohol? If I freeze vodka for example.

>> No.11730242

>>11730239
>if I freeze vodka
if you cannot freeze salt water you absolutely will not be able to freeze vodka, anon

>> No.11730275

heres a little known fact I like to spread with the world whenever we talk about ice and cold things. So one of America's first millionairs was some dude that cut blocks of ice out of some frozen lake and sold those blocks of ice all around the world (as far as india). The transport? Literally just a wooden ship, imagine how long the journey took, hot tropical weather, ice dumped in some cargo bay. half year travels, sold in india. how bout that anon.

>> No.11730306

>>11729681
Normal. At a plastic bottle size you will gain ZERO (0) benefit of any approach. Just freeze a bottle of water retard.

>> No.11730660

>>11730306
Look, if I'm going to do something everyday I want it to be most efficient



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