[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / r / s / t / u / v / vg / vm / vmg / vr / vrpg / vst / w / wg] [i / ic] [r9k / s4s / vip] [cm / hm / lgbt / y] [3 / aco / adv / an / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / pw / qst / sci / soc / sp / tg / toy / trv / tv / vp / vt / wsg / wsr / x / xs] [Settings] [Search] [Mobile] [Home]
Board
Settings Mobile Home
/sci/ - Science & Math

Name
Options
Subject
Comment
Verification
4chan Pass users can bypass this verification. [Learn More] [Login]
File
  • Please read the Rules and FAQ before posting.
  • Additional supported file types are: PDF
  • Use with [math] tags for inline and [eqn] tags for block equations.
  • Right-click equations to view the source.

08/21/20New boards added: /vrpg/, /vmg/, /vst/ and /vm/
05/04/17New trial board added: /bant/ - International/Random
10/04/16New board for 4chan Pass users: /vip/ - Very Important Posts
[Hide] [Show All]


Janitor application acceptance emails are being sent out. Please remember to check your spam box!


[Advertise on 4chan]

[Catalog] [Archive]

File: the phenotype.jpg (396 KB, 798x1200)
396 KB
396 KB JPG
The new /sci/ wiki
https://4chan-science.fandom.com/wiki//sci/_Wiki

(More resources in replies)
4 replies omitted. Click here to view.
>>
File: undergradmath-1.png (296 KB, 1700x2200)
296 KB
296 KB PNG
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.

File: G5qn8HuXsAA2ubx.jpg (578 KB, 1024x1280)
578 KB
578 KB JPG
Methane - edition

previous >>16846789
139 replies and 33 images omitted. Click here to view.
>>
File: hfthft.jpg (171 KB, 1280x720)
171 KB
171 KB JPG
https://www.youtube.com/watch?v=d7Gs2NBq-ds
>"They're really tearing down that launch mount" | SpaceX Starbase
>>
>>16850377
even if it only saves 1 dollar per launch
that's enough for a pizza party for spacex
nice
>>
>>16850374
It's really not
>>
>>16850378
So launch pad 1 was a complete failure
>>
>>16850381
No flame trench is best flame trench lol

File: hq720 (6).jpg (74 KB, 686x386)
74 KB
74 KB JPG
What's the biological reason for the human brain to find AI stuff so revolting?
It's not the uncanny valley because the uncanny valley makes you feel uneasy - AI shit just makes you angry.
64 replies and 6 images omitted. Click here to view.
>>
>>16850191
I already obliterated you by tricking you into admitting that it took effort for you to reach Beethovens level. You’re literally 3 replies behind btw.
>>
>>16850204
>I already obliterated you by tricking you into admitting that it took effort for you to reach Beethovens level
You sound legit psychotic. No amount of effort is ever going to make me a Beethoven, just like no amount of effort is ever going to make you as good as I am at the things I do. Effort does nothing.
>>
>>16850207
Okay, but science says otherwise. Your children will be slaves to my family mind you, and we will extract effort from your bloodline and they will be thankful by the way.
>>
>>16850212
>psychosis peaking
Absolutely mindbroken.
>>
>>16849897
Rather than noise it's a distribution of frequencies in the image. Real images have a specific statistical distribution, there are even actual algos based on it that do a surprisingly good job reconstructing images from very noisy data (iirc Applied Science on youtube has a decent video about it) but I guess AI makes it too close to perfect, and while we're not equipped to directly perceive it, it's still a pattern we can tell, so with just a bit of experience it becomes easy to tell most AI slop from real pictures even if you can't put a finger on what exactly is wrong with it.

File: superpermutation.png (191 KB, 898x869)
191 KB
191 KB PNG
Why don't geniuses use this board anymore?
40 replies and 4 images omitted. Click here to view.
>>
>>16847168
No, it would just get zero replies and then drop off the board a week later.
>>
>>16847218
It was interesting but incomplete, the very structure should also have some ruleset to evolve and move those cells.
Reality is not a neatly aligned excel sheet.

Sadly it doesn't look like he made any breakthrough.
>>
>>16845490
combinatorics is mind numbing slop
>>
>>16845492
;-;
>>
>>16847168
>14! derp

lmao classic

File: 1741836321051611.jpg (20 KB, 306x306)
20 KB
20 KB JPG
How the fuck does electricity work?
It seems like black magic
9 replies and 1 image omitted. Click here to view.
>>
>>16849751
by imparting energy to whatever components it is allowed to flow into and through.
>>
>>16849639
>water metaphor
Isn't this really frowned upon as a way of explaining electricity?
>>
>>16849894
No?
It's standard practice for introductory purposes and the analogy goes pretty far.
But, like any other analogy, it has its limitations. Like it doesn't explain induction very well and you have to contrive pretty hard to make it work (a transformer is kinda like a hydraulic press in a way?). But for introductory circuit analysis it's fine.
>>
>>16849894
It is. It's a very surface level analogy and breeds a lot of false assumptions. You should only really use it if you're trying to explain it to a child.
>>
>>16849614
If you move a bar magnet in and out of a coil of copper wire, the wire will have a measurable voltage. That’s you converting the movement of your hand (mechanical energy) into the movement of electrons. Turn that process into a machine and you’ve created a generator :^)

File: Alexandra Elbakyan.jpg (35 KB, 1280x640)
35 KB
35 KB JPG
Say something nice about her.
>>
>>16850353
She's Stalinist

File: 1752172325990814.png (253 KB, 634x428)
253 KB
253 KB PNG
Is it true that we're going to achieve immortality soon?
107 replies and 13 images omitted. Click here to view.
>>
>>16847613
seems like you're mad at something other than people interested in anti aging
>>
>>16848285
baldness is cured. A lot of men don't care
>>
>>16844826
I wouldn’t try for it have fun though I prefer hell gulag don’t worry I’ll dump you on the moon
>>
>>16844841
>depopulate the planet
Meanwhile others say "cabal" is promoting population growth using mass migration of retards who breed all day so they have their goycattle. Which is true?
>>
>>16847967
>>16847995
The truth is that no one is too sure at the moment and there are researchers from pretty diverse backgrounds, all doing important stuff. My personal view is that, fundamentally, we need to discover or engineer drugs/therapies that will make us healthier, and so lab sciences focused on methods of discovery that actually use biological models to validate their ideas are the way to go. More specifically, this usually translates to "labs that test drugs for life extension in animals like worms, flies, or mice." "Drugs" could mean small molecule drugs or more experimental stuff like RNA therapeutics or other genetic interventions. The Peter Attia episode with Matt Kaeberlein and RIchard Miller is a good layman's intro to this sphere of research.

On the other end, I believe that organ replacement might be even more effective than "traditional" drug discovery in the short term. There are many labs working on, for example, immunologically engineering pigs so that we can put their organs in humans without rejection. I'm less familiar with this sphere but the Belmonte lab at Salk had some really cool studies in this area.

Are you an undergrad looking to pursue the topic? Specific fields I would recommend are Molecular Biology, Biochemistry, Physiology, Pharmacology, Systems Biology, etc. Computer science/computational biology are both great and these people do really important work, but most of them are stuck theorizing about stuff and not able to actually test ideas unless they have enough clout to get lab people on their side and do stuff for them. If you really want to make a mark, I would lean towards lab sciences.

Is Calculus really treated as its own subject in American schools? As someone from the UK which as far as I know literally invented this shit, I don't remember encountering this whatsoever in High School or when I did my Comp Sci degree. Not even baiting, pic rel is complete gibberish to me
16 replies omitted. Click here to view.
>>
>>16850183
Yes, sort of. You can generally take Calculus your senior year of high school if you skip Pre-Algebra in grade 7 or some shit.
>>
currently failing calculus. got 20% on both my exams.
AMA.
>>
>>16850330
What are you struggling to understand?
>>
calculus makes shit like compound interest easy as fuck to understand which is why it's not taught in the us/uk like it is in asia
>>
>>16850192
this is all highschool stuff in my country wtf

File: download.jpg (16 KB, 300x168)
16 KB
16 KB JPG
i also feel like it's a trick. There is no way something moves faster than x2 ground wind, without proper human skill and intervention. every advantage could turn into a disadvantage very fast. timing and alignment play a huge role, just like in a sail boat. The opposing forces are also at play, just like two cars don't collide at 25 each, but at 50 combined. With a thin frame vehicle, to go 40 at a 25 of wind gush is just a skill issue. You cannot however be faster than 50, i think (unless the wind reflects on the ground, giving it an aviation rotation movement???). Also, Veritasium should have use a level in their test.
Cyclists also know that when pedaling against wind. It feels like more effort is required. They should have theoretically calculated twice the speed of wind, so it wouldn't sound like a cookoo free energy gimmick. A plastic bag or a rock could beat this thing, given the alignment of the vehicle or the force of wind.
I would like to know if i am wrong.
5 replies omitted. Click here to view.
>>
>>16850030
>probably
you are Probably just shit posting
>>
>>16850030
Should have known 4chan is brainrot, not critical thinking. Thaks!
>>
>>16850027
I love pussy
>>
>>16850293
Last post best post
>>
>>16850031
np, ty for link
hope the thread goes well...
>>16850030
hmmm...

File: wtf.png (975 KB, 695x800)
975 KB
975 KB PNG
What in the actual fuck?
>>
woman moment
>>
It do be that way...
https://en.wikipedia.org/wiki/Sexual_cannibalism
>>
>>16850299
Death by Snoo-Snoo.

Mamacanda.

Down with the Patriarchy!

File: IMG_8155.png (18 KB, 588x366)
18 KB
18 KB PNG
https://boingboing.net/2007/05/09/robert-anton-wilson-.html
It is a story about a captain Clark bragging that he never had any incident for 23 years but then the very same day he has an accident that kills everyone on the ship. Then later on the same day a Flight 23 piloted by another captain Clark crashes and kills everyone in it as well.

Can somebody find any evidence that this story happened?
I have tried finding any evidence of these stories, but I have come up empty.

Could someone brag about living twenty three years or just doing something for twenty three years and then die because of the enigma?

Is the enigma deadly
Would somethinghappen and or would someone die if they made a fictional character the age of twenty three years old?

Could someone verify if either of these things happened at all?
I did find an article / blog post debunking the air plane part of the story, but I cannot seem to find it anymore.

I see the number twenty three for a bit after I look this up. I will see it when look at what time it and or watching a show and pausing it.
Or collecting twenty three of something in a video game.

Is it coincidence? Something to do with my brain / mind?



Comment too long. Click here to view the full text.
>>
Will / does / would something happen at all by making something bad happen to fictional character(s) that either already are or just turned twenty three years old?
What about having the fictional character(s) dying will / does / would something happen at all?

Will / does / would something happen for making fictional character(s) twenty three years old?

Wills / does / would anything at all happen for making a new fictional character(s) on the twenty third of a month, including if they so happen to be twenty three years old or not? What about having new ideas on for fictional story(ies)and using them at all and or / later after the twenty third?

Why do science positions and engineering licenses still require specific degrees when they could have very difficult certification testing alone? Do they hate talent
>>
>>16850357
everything's fucked
>>
i watch this guys videos
https://www.youtube.com/watch?v=7vE5qiOBGK4
and pretend i'm there

i dropped out of highschool, i live in a ghetto with hispanic immigrants
i think i had a stroke last year
i've never had a job
i can drive
>>
>>16850357
Because tests are actually a terrible way to evaluate people.
Most books weren't written for self-learners. Any experimental side requires a lot of secondary knowledge that people would simply skip.
For example you can't have a test related to writing a real paper/experiment discussion. But writing something is actually easy, the hard part is writing something actually useful, for starters you need the (at least someone invested) opinion of someone with academic formation.

Self learning is possible, and for some fields like Programming, if the student is serious enough then it's perfectly viable and you don't need a certificate to work. The problem is you can't rely on those outliers to run a country

File: file.png (57 KB, 390x488)
57 KB
57 KB PNG
>>>/b/942166092

theoretical basis of electrogravitic propulsion just dropped
194 replies and 25 images omitted. Click here to view.
>>
>>16849821
but your picoamp example really just illustrates scale separation (shot noise vs mean current)
>>
>>16849878
Eventually you realize there isn't really an appreciable difference. Effective field theories are just applying continuous limits of discrete behavior to more efficiently describe and predict behavior on a larger scale.
>>
>>16849875
i still don’t see how one can measure the field strength by allowing the charge of a particle go to zero. this makes no sense, there is nothing smaller than the elementary charge and simply ignoring it by pretending it goes to zero is magic and faerie dust to me
>>
>>16849909
You're not letting the charge equal zero, you're letting the contributions from the individual charges be small compared to the whole that the result can be modelled continuously instead of discreetly.

It sounds like you're fundamentally struggling with the concept of limits.
>>
>>16849968
whatever semantics game you’re playing here, there are no charges smaller than the electron. if your theory depends on making this quantity vanishingly small in order to prove that some other dubious quantity exists, your theory is as good as fiction. say all you want about limits because math logic != physics logic

Professors, lecturers, even TA's, welcome to The Lounge. No students allowed.

How's the semester been for you lads?
13 replies and 1 image omitted. Click here to view.
>>
>>16848553
Half and half.
>>
I had one student write "hoax law" instead of "Hooke's Law" on a lab report. I laughed out loud.
>>
>professor I'm really worried about my exam scores, how can I be better prepared for the final?
What do you say?
>>
>>16850315
Depends on what it is they've struggled with on previous exams I suppose. If it seems like a time management issue, talk to them about reading through the exam completely before starting to work on anything, and prioritizing the problems where they recognize the material or methods they can apply so they get the easy points out of the way early. If it seems like there are just particular concepts or problem-solving methods they're struggling with, offer to go over some of that material with them (and if they're still struggling after that, nudge them to prioritize the content on the final that they're stronger with). If they've just been absolutely beefing it on exams, consider having a frank talk about whether they should be withdrawing from the class (assuming the deadline hasn't already passed).

This is the most frustrating time of year for me - the last few weeks of the semester where suddenly all the students who've been skipping class and failing exams come out of the woodwork all wanting to know how they can "buckle down" and "finish strong" and pass the course.
>>
>>16850315
No idea. I wish I could just tell them to fuck off though.

File: whale_evo.jpg (92 KB, 477x610)
92 KB
92 KB JPG
Genuinely how do people that don't believe in evolution explain this? I'm asking this in good faith, I'm not trolling here.
132 replies and 19 images omitted. Click here to view.
>>
>>16849455
>All of these start with "observation."
You're coping so hard you're too blind to read at this point and see one of them does not say that. It says it starts with a question
Amazing
Not that it matters since they're all pop sci anyway (that you had to resort to because you lost the argument) thus none of them are valid
How embarrassing
>>
>>16849521
They are though. The E. coli experiment in particular included thousands of observations
>>
>>16850046
You clearly need this "win" real bad. So I'll give it to you.
You are clearly highly intelligent and so much smarter than me. I hereby concede your superior intellect and vast understanding of the matter.
>>
>>16849286
>No, that's the exact opposite of the scientific method. The scientific method requires that a hypothesis/idea comes first then data is found and either supports or rejects it
You're not strictly right, but I understand what you're getting at: the point of a scientific hypothesis is to explain some observations in a way that predicts something far beyond the original observations, so that it can be tested. Otherwise you're just doing the human equivalent of what MLfags call "over-fitting". A good hypothesis follows the data that inspires it and predicts the data that confirms it, such that the latter cannot be derived from the former without going through the logic of the hypothesis.
>>
>>16844875
How many species had to exist in between all of those animals in your pic?


[Advertise on 4chan]

Delete Post: [File Only] Style:
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
[Disable Mobile View / Use Desktop Site]

[Enable Mobile View / Use Mobile Site]

All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.