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/sci/ - Science and Mathematics

Spending thousands of dollars on useless labs since 2014.

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Oh, hey. We're actually having old posts pruned now.

 No.2741[Reply]

Any podcasts /sci/ like other than radiolab? Tired of these comedy pods



 No.2643[Reply]

As you may or may not know, libgen was went offline a couple of days ago. [1] For the uninformed, it was a piracy site provided by the Russkies that had ~60TB of non-fiction books, textbooks, science articles, and more. It went offline in the wake of a lawsuit from Elsevier. Now, this is not a centralized repository; it has had a public FTP server, and distributed torrents for the longest time, but let's not kind ourselves. Contemporary filesharers are bad at preserving that which is of importance, but is not in people's immediate interests. Therefore, fellow /sci/entists, I implore you, please download as many of the magnet links from this paste[2] as you reasonably can, and seed it until a future existence for libgen is certain.

Don't get me wrong, this very much not an appeal to moralfaggotry. Rather, I want to go to university someday, and I do NOT want to pay the cost of a powerful computer for textbooks alone!

We perhaps want to discuss alternative ways to preserve this treasure trove of academia, as well. After all, do we really want to leave it up to a bunch of silly ruskies?

[1]: https://torrentfreak.com/libgen-goes-down-as-legal-pressure-mounts-150622/

[2]: https://pastee.org/grb64

4 posts omitted. Click reply to view.

 No.2711

>>2705

If Pareto's principle holds, 20% of books represents 80% of the total file size.

So it should be possible to save 80% of the files inside a 1.2 terabytes.


 No.2712


 No.2713

> libgen was went offline a couple of days ago

It works fine for me.

http://libgen.education/


 No.2724

>>2712

>leddit


 No.2737

>>2724

Tell me which libgen thread is better, this shitty one on /sci/ or that other one over at reddit?

Are you are a try-hard faggot trying to fit in that bashes on reddit no matter what? Because that's what it looks like to me.




File: 1435387942988.jpg (23.08 KB, 400x529, 400:529, 1432772660669.jpg)

 No.2649[Reply]

What do you guys think of this email I sent to my former biology professor? I don't go there anymore so it's not like I can get in trouble. I just don't give a fuck about anything anymore. I left the college for mental health reasons a couple of years ago, btw.

I told you when we met that I am interested in population genetics and human biological diversity. I have been doing my own reading. If you are interested, check out this bibliography:

www.humanbiologicaldiversity.com

“In a time of universal deceit, telling the truth is a revolutionary act.” — George Orwell

I want to seriously study this field, but I can only do it if I do not state at the outset what my interests are to adcoms. It’s too politically incorrect to be acceptable to most universities – as you will know if you clicked on the link to the bibliography I mentioned above.

I want to, in my own little and small way, destroy the neoliberal social reality we live in. I told you about how I felt excluded when I was at [my college]. I told you about the hatred I have for that place. I didn’t tell you about the cliquishness I experienced there, but I don’t think you would be surprised to learn that it was so.

I can’t do this type of work as a doctor, and I have learned that medical schools have a stick up their behind when a candidate is shown to have ANY mental health difficulties. I don’t think it is the right profession for me anyways, considering the suicide rate. And frankly, I am not interested in healing people.

Wherever the research on human biology takes me, I am sure I can carve a niche for myself. I will enjoy making the world a meaner, more brutal place for people to live in. :)

1 post omitted. Click reply to view.

 No.2651

> I will enjoy making the world a meaner, more brutal place for people to live in.

Sounds tryhard as fuck.


 No.2654

>>2649

>I will enjoy making the world a meaner, more brutal place for people to live in. :)

> :)

I can understand being misanthropic an nihilistic but i cant even that this seriously because its so over the top.

Its not even good as a rant.


 No.2688

way too edgy/10


 No.2702

File: 1436384514030.jpeg (78.41 KB, 1275x697, 75:41, not important.jpeg)

What do you guys think of this email I sent to my town's nuclear power plant? I'm going there to kill myself anyway so it's not like I could get in trouble. I just don't give a fuck about anything anymore.

__

My name is not important… What is important is what I'm going to do. I just fucking hate this world and the human worms feasting on its carcass. My whole life is just cold, bitter hatred… and I always wanted to die violently. This is the time of vengeance and no life is worth saving. And I will put in the grave as many as I can. It's time for me to kill… and it's time for me to die. My genocide crusade begins here.


 No.2704

I'm sure anyone who visits this site understands how leftists think, and how a leftist would react to this site. Most biologists are leftists, and those that aren't will not easily reveal their power level - certainly not in writing to a stranger.

As for you, your academics are already FUBAR and you have zero chance of ever becoming a biologist, not even a lab tech. Even lab janitor will be hard, because word will travel about these un-PC tendencies of yours.

Most profs are very busy anyway, they can barely keep up with very important emails like their coauthors or grant application stuff. If he even reads your email (maybe like 10% chance) he will either delete it and forget about it completely, or decide to write a response at some time in the future when he is less busy (which will never happen) and move on.

So I don't think he ever replied to you or ever will.

Besides, even if he was a full on /pol/tard in hiding, how would he know that you are sincere, and not just some SJW activist trying to troll him into exposing himself?




 No.2648[Reply]

ITT: your favourite social scientists

>Eric Wolf

>Franz Boas

3 posts and 1 image reply omitted. Click reply to view.

 No.2691

>>2690

>In short: social science has been too thoroughly injected with Marxism

What the fuck are you babbling about.


 No.2692

File: 1436265873375.jpeg (137 KB, 489x568, 489:568, According to this graph.jpeg)

>>2648

Why are you people so adamant in referring to Sociologists as social scientists ? Sociology gave the world women/gender studies .Call them scientists is like calling political "scientists" , scientists (they are not , they are just morons who want to appear smart) . Explain faggot ! Why do people call them scientists . If the serfs can understand what you speak to them then you are not a scientist . Putting sociology and it's ilk in the science sphere is like putting Ecology into STEM


 No.2696

>>2692

>like putting Ecology into STEM

Is this bait? Ecology has rigorous mathematics-derived methodology, more than any other biological discipline in fact.


 No.2701

File: 1436384160995.png (165.12 KB, 332x512, 83:128, ohwhat.png)

>>2692

Why are you bringing /pone/ here?


 No.2708

>>2689

this is the only right answer.




YouTube embed. Click thumbnail to play.

 No.2699[Reply]

So, I'm planning on doing an experiment, and I want to make sure I don't…hurt myself, I guess. It's been a decade since I was in high school chemistry.

Ice has a phase diagram:

https://en.wikipedia.org/wiki/Ice#/media/File:Phase_diagram_of_water.svg

And I would think that it would be impossible for an average guy to have the equipment to make ice II, but the attached vid shows a fourth grader making the stuff.

Hold that thought. Here's the eutectic diagram for salt-water

http://www.chemguide.co.uk/physical/phaseeqia/salteutect5.gif

If I make the eutectic mixture (I don't know the proper vocabulary, I mean that 23% ratio in the graph) of salt-ice and then bring it up to the pressure of ice II, I'm curious as to what would happen.

I guess I'll leave this here for y'all to call me an idiot while I run off tomorrow to use a 12-ton car jack that when I try it will shoot a die cast out the side at 60 mph and kill me.



 No.2655[Reply]

hi /sci/

what are some sites for problem solving? i know about brilliant aops clevermath khanacademy. any one know some others?

 No.2687

Go buy math books.

Or if u like logic puzzles, Martin Gardner, Lewis, and Ray Smullyan all make pretty good ones.


 No.2697

Mathstack or Math Overflow is where I get my fix.

Oh, the fond memories of the problems I've encountered.




File: 1433989568521.png (119.93 KB, 1015x1085, 29:31, maths.png)

 No.2540[Reply]

Any of you browse Academia@SE? Enjoy yet another retarded question that popped up on the hot questions list the other day.

>wants to be a professional mathematician but can't handle a simple hs class

>probably not even a hard class because he sounds like he's at some shitty public school not an gifted students school

>types like a retarded chink even though english is presumably native language

>still thinks he is so smart that he should be allowed to just bypass the entire institution of academia because he knows better than centuries of experience

>implying 15k is a realistic career goal (enjoy doing research when you're starving on the street lol)

>muh self diagnosed disorders

I'd like to see what he means by "finished an MSc book". Probably just flipped the pages and looked at the pictures.

>15 votes

Why do people upvote this shit? This is clearly just another retard that has a hopelessly skewed impression of his own abilities. There's one in a billion chance (literally!) that he's the caliber of genius that would justify letting him skip through the entirety of higher education and just "do research" (lol, who will teach classes? Who will supervise grad students? Who will organize conferences? Who will apply for grants? Who will sit at tenure review boards for new faculty?), and that's before considering how he types.

>hurr durr i'm 15 and i know better than everyone, just make me a professor of math already

17 posts and 2 image replies omitted. Click reply to view.

 No.2638

>>2630

Lol, who gives a fuck about violins?

Serious research on 4 hours a day isn't gonna happen. The whole idea is ridiculous, it's also completely counter to what most successful researchers in the natural sciences do, and there's never been any researcher who got shit done with this retarded approach.

I asked you how many times to provide proof but all you have is bullshit. Science takes time and work, faggots. 4 hours a day ain't gonna cut it, ask any scientist.

>>2631

Good fucking luck getting anything done working 4 days a week when everyone else is working 7.

Have any of you wishy washy faggots ever so much as set foot inside a lab? It's unbelievable how disconnected you are from reality.

If you want to say creative work like art or writing, or math, or even social "science" can be done with comparatively little work every day then fine. But if you're about to claim that it's rational to expect to spend less than 4 hours a day and accomplish anything worthwhile in physics, chemistry or biology… Hahaha, hell naw niqquh get #rekt.


 No.2660

>>2638

As previously explained this does not mean you only work 4 hours a day, but 4 hours a day at the highest level.

Most scientists - and I know a few - spend most of their day doing drudge work of one kind or another. Grant applications etc.

Read some biographies.

You are showing your ignorance by suggesting that practising a musical instrument is not hard work. It is exhausting if you are doing it right.


 No.2661

>>2660

Look at what Einstein accomplished when working a full-time job in the patent office.


 No.2662

>>2540

He types like an Indian/Paki. Given he's in Australia that's probably quite likely


 No.2686

>>2540

Honestly if he actually is that smart then hell just have to make do with what he has.

If he isn't I'm sure real math will bring him down a notch.




File: 1435654196389.gif (846.84 KB, 498x273, 166:91, 222.gif)

 No.2665[Reply]

is there any merit to the electric universe theory?

i get tired of hearing how stars have fusion going on as there source of energy.. cus hurr durr muh atomic bomb.

is it possible its an electro magnetic process instead

 No.2670

>>2665

>is there any merit to the electric universe theory?

Fellow layman here, was literally about to post this and ask if someone can refute (or link to a refutation) in regards to the "work" done by the Thunderbolts Project and it's members such as Stephen Crowder that claim to debunk Quantum Theory (or more accurately, the current understanding of Quantum Theory and the misinterpretations that are attributed to Einstein's allegedly disingenuous presentation of the underlying mathematics, and the blending of Newtonian theory when needed in order to "patch the holes/flaws"). I understand the overall theories provided, but the pure mathematics that is quoted is something I haven't dedicated the time to fully understanding.

I know some Biologists who agree with Electric Universe theory, but Physicists seem to be intent on calling it crackpot. Any links would be greatly appreciated.


 No.2671

In physics an electric field applied to charged particles cause them to accelerate. The

Electric universe theory says that the solar wind is the result of such a field, and the Sun is electric, not fusion based.

Maxwell’s theory of acceleration, however, talks about a time variable field, not a fixed one, and what’s more the solar wind contains both positive and negatively charged ions (protons and electrons mainly). An electric sun would be positively charged and all the negatively charged electrons would be attached to it – not be pushed out from the Sun on a solar wind. This fact proves the Sun is not electric.




 No.2657[Reply]

Has anyone read the Wikipedia article on the Cretaceous–Paleogene extinction event? If you haven't, check it out. It is the most red-pilling, consciousness expanding thing you will read.

The key takeaway that I never knew about it, and I bet most pepole don't know, was that ALL TERRESTRIAL ANIMALS LARGER THAN 2 KG DIED OUT. All herbivores and carnivores died out (carnivores doesn't include insectivores and omnivores). LITERALLY THE ENTIRE PLANET WAS ON FIRE.

Here are some highlights:

Such an impact would have inhibited photosynthesis by creating a dust cloud that blocked sunlight for up to a year, and by injecting sulfuric acid aerosols into the stratosphere, which might have reduced sunlight reaching the Earth's surface by 10–20%. It has been argued that it would take at least ten years for such aerosols to dissipate, which would account for the extinction of plants and phytoplankton, and of organisms dependent on them (including predatory animals as well as herbivores). Small creatures whose food chains were based on detritus would have a reasonable chance of survival.[81][97] The consequences of reentry of ejecta into Earth's atmosphere would include a brief (hours long) but intense pulse of infrared radiation, killing exposed organisms.[51] Global firestorms likely resulted from the heat pulse and the fall back to Earth of incendiary fragments from the blast. Recent research indicates that the global debris layer deposited by the impact contained enough soot to suggest that the entire terrestrial biosphere had burned.[115]

There is clear evidence that sea levels fell in the final stage of the Cretaceous by more than at any other time in the Mesozoic era. In some Maastrichtian stage rock layers from various parts of the world, the later layers are terrestrial; earlier layers represent shorelines and the earliest layers represent seabeds. These layers do not show the tilting and distortion associated with mountain building, therefore, the likeliest explanation is a "regression", that is, a drop in sea level. There is no direct evidence for the cause of the regression, but the explanation currently accepted as most likely is that the mid-ocean ridges became less active and therefore sank uPost too long. Click here to view the full text.

 No.2658

No actually I try to stay away from POV-pushing shitshows like Wikipedia and stick to the raw literature. Have you ever read the original Alvarez paper? They do indeed hypothesize that anything within quite a large area around the impact site would have been set on fire. I'm not sure I remember reading that the whole planet was though, that's rather dubious.




 No.2646[Reply]

I'm an Anthropologist, do I get respect on /sci/ ?



 No.2602[Reply]

hey guys, not a sci guy by any means

have a question for you

is it possible to sonar or mri or any other way to image the earth?

i would love to do a huge sonar scan on this piece of dirt. i was thinking sonar but idk how that would work, and my budget is only like 100k (lol i dont think its doable)

why wouldnt a sonar work?

if you know how i can do it post the method and please post the supplies needed and a rough cost if you can

 No.2608

Doesn't sonar use sounds to create an image? So wouldn't the sound waves just bounce off of your dirt?


 No.2624

>>2608

I think he means like an ultrasound

Op, just use an ultrasound.


 No.2625

>>2624

>>2608

aren't those the same things but at different frequencies?


 No.2642

>>2602

Seismology is basically sonar, used in probing the entire earth (core) down to sub-km scales (fault lines). Used a lot in oil exploration.

For closer observations there are techniques like ground penetrating radar, electrical resistance, and electromagnetic conductivity. Mostly used in things like archeology.

You can also measure perturbations of satellite orbits to detect unevenness in the gravity field and map the density of the ground it's orbiting over.

Whole load of stuff basically.




File: 1434821737799.png (328.96 KB, 500x488, 125:122, 1434505900420.png)

 No.2605[Reply]

you ever get scared of touching your neck, or relieving nitrogen bubbles in your spine? is it medically possible to apply pressure with your hand on your neck or head that could burst some sort of nodule which would then make you retarded?.

 No.2618

uwot


 No.2620

>>2618

i'm scared that i'll press a button on my body and i'll die.


 No.2623

>>2620

you…cant do that. you can gouge your own eyes out, that might kill you.


 No.2629

>>2605

there is some evidence to suggest cracking your neck might lead to strokes




YouTube embed. Click thumbnail to play.

 No.1425[Reply]

what do you think of this /sci/?

 No.1458

Soft soil beneath surface gets eaten up by rain water, causing the surface to collapse.

 No.1461

>>1458
Silly anon, rainwater doesn't have a digestive system. How can it eat?

 No.2135

YouTube embed. Click thumbnail to play.


 No.2144

YouTube embed. Click thumbnail to play.


 No.2628

File: 1435044670654.png (82.77 KB, 339x329, 339:329, 1424641094800.png)

>>1461

not only that………

how would it poop?!?




File: 1434977140933.png (58.07 KB, 237x346, 237:346, ClipboardImage.png)

 No.2622[Reply]

>Moreover, since mathematics is largely a technical, as opposed to philosophical, discipline, it is not unreasonable that mathematicians should, in the main, get on with the business of pursuing their technical specialities without worrying unduly about foundational questions. But that does not give them licence to pronounce upon matters on which they have not seriously reflected and are ignorant, or to assume that expertise in some special branch of their subject gives them special insight into its foundations.

take note



File: 1434878096934.jpg (30.61 KB, 496x663, 496:663, 1476360_717477648349119_88….jpg)

 No.2611[Reply]

Alright, science question. Mind you, I ain't the most intelligent bugger, raised in TN. But, questions. It involves bubbleverse theory, multiverse, dark matter and others.

General disclaimer: I use reactions and observations interchangably. Sorry if this causes confusion.

Can somebody explain to me how light and time are not the same force?

Or how dark matter could potentially be the mere absence of time?

We know time is affected by mass, while technically not having mass of its own. This could be due to the force of gravity, whereas upon approaching the event horizon time flows normally for the subject arriving, but is moving at an infinitely slow speed to an observer. (Surely, the gravitational force of the black hole must be warping time in some regard. I don't know for certain, I've never studied enough and wonder if you guys have.)

When we observe galactic drift throughout the universe, and notice that everything from center of perspective is accelerating from its projected course, is it a plausible explanation that dark matter is merely the absence of time?

Bear with me. I'll do a summary at the end, hope I haven't lost you yet.

Presume that mass, matter, antimatter, and etc. as we know it are only detectable because we live in a space of time.

We have energy via light given to us by a sun, a cluster, a galaxy and known universe. No matter what we as humans do on Earth, this will never change. Because while we are affected by the mass of our own body and consciousness, we will perceive time in some way due to the effects of mass and gravity, which distort time exponentially. (The higher the mass, the slower timeflow. This has been tested by clocking time in orbit of the planet versus groundtime; in space, time moves faster, but very minimally so.)

So in the absence of mass, timeflow increases.You could consider an analog to that of a river- whenever it narrows, due to jutting rocks or shores, waterflow increases around the masses in those areas. Water flows faster when the water Post too long. Click here to view the full text.

 No.2612

File: 1434878250570.jpg (86.05 KB, 659x696, 659:696, 11081273_734002516717632_3….jpg)

So then what if the reason we can't observe dark matter is because it technically doesn't exist yet? What if dark matter is merely the Schrodinger's Cat of matter, where it spontaneously conforms to matter's presence because it is observed?

Or better yet, what if Dark Matter is matter of another universe?

Consider now the multiverse theory. Where every possibility of every action and reaction immediately splits into an infinite number of successive universes based on each decision.

If matter only remains stable and 'matter' upon observation, what would it be when we do not observe it?

Does that mean that the absence of matter IS dark matter? But where would it go? If the multiverse theory is true, then it didn't go anywhere other than intended, and also formed in the corresponding universe where a counter-observation was made upon it.

(Example: See matter, it does one action, not another - where at the same time, it does the other action in another universe, where it is observed as such there.)

Now how does all this fit into the Bubbleverse theory?

Alright, take the two previous hypotheses, and combine them as such when reading the following section:

1. Time, affected solely by matter and its gravitational pull and mass, does not exist where matter does not.

2. Time is the reaction from the creation of infinite universes based on the observation of matter.

While time itself has no mass, it is affected by matter as if it had did; it orbits a mass, per se, due to its gravitational pull. This means that where there are concentrations of mass, time flows slowly, and is observable. So the more observed a universe is, the more universes it creates, and therefore the faster it moves through time because it grows more and more due to increasing observations and reactions of matter. Make no mistake, I mean this not contradictory: Because time isn't present without mass, in its absence we don't observe Post too long. Click here to view the full text.


 No.2613

File: 1434878442428.gif (603.35 KB, 320x240, 4:3, 1415940813015.gif)

Example: I'm a galaxy 8 billion light years away, fifty times more massive than the Milky Way. For me, because of all of the reactions in my galaxy (Due purely according to the presence of more matter occupying space) time would seemingly flow slower for me, because I'm more massive. I'm able to attract more of it into my gravitational pull. Because of that, my effective life is shorter to the observer here in the Milky Way. (Ever heard the phrase the brightest flame burns the quickest?) In 8 billion light years it could take to reach us here on Earth, I could have galactic civilizations rise and fall countless times over, all in a fiftieth of the time that it would take here in the Milky Way.

Okay, but where's bubbleverse? Assume each galaxy, then, is a universe. An enormous congregation of mass and matter. Affected by time and energy. Where there is no time, no energy, there is no matter, and is therefore the 'edge' of the galaxy. In 3-dimensional space, this could resemble a bubble surrounding the galaxy. So each galaxy that drifts throughout space is moving down that pathway of the dimensional universe, propelled further by observation, resulting in time past. (Only relative to the matter affected.) When galaxies collide, everything we know breaks down because there are that many more possibilites that can occur in space/time. (Space/time here being the observable universe.) The physics that shape everything we know break down near such gigantic clusters of mass, such as black holes. (And just as a kicker, there's presumably one at the center of our galaxy!) And as I'm finishing that statement, I realize something else that bugs me. What if black holes, such massive concentrations of gravity that even light cannot escape, and not even directly observable, are the engines of space/time?

What if black holes are basically Random Number Generators for the universe that make basic observations of matter? (Or better yet, what if they're non-random? That's an exciting prospect.)

If mass exists near a black hole, it is naturally going to affect that mass and create reactions. This creates an abundance of time, so it backlogs and moves slowly.

If time slows in the mere presence of that much force, then surely everything in a huge radius around it would be unPost too long. Click here to view the full text.


 No.2614

File: 1434878546539.jpg (6.6 KB, 200x200, 1:1, 1415264041605.jpg)

Tl;dr:

Crackpot theory:

Black Holes: They're RNG (Or potentially even non-random) observation engines for the universe, creating infinite universes based upon its gravitational force. Time is the direct consequence of this action, allowing us to observe matter in one state or another. Time, as such, does not exist where matter does not; so dark matter could potentially be the absence of time. Dark energy, the supposed force pushing the observable universe apart faster, could be contributed to clusters of time and creation of multiverses pushing the bubbles of time and mass through dark space - which would be matter that hasn't been observed yet. (Or has since reached a state of being unobserved, lending to a cyclical nature we see in the natural universe upon re-observation.) When these bubbles collide, our known physics break down because there are more observations than we can see from our observable standpoint in relative time. That much mass present warps time, like a black hole itself distorts it. More reactions occur in a relatively shorter amount of time, increasing the energy and time released, where that many more reactions can occur.

Really, I just want to know where I'm wrong. That can't be the next big thing to solving the universe, can it? What am I missing to this equation?


 No.2615

>Can somebody explain to me how light and time are not the same force?

time is a metric, so i don't know how energy, and in turn, force could manifest from it. you can't measure how many joules are in a second, it makes no sense.

>Or how dark matter could potentially be the mere absence of time?

the most accepted idea is that it's particles which move slowly compared to the speed of light (the cold in CDM) and interact very weakly with electromagnetic radiation (the dark in CDM).

>We know time is affected by mass, while technically not having mass of its own.

time is relative to your frame of reference according to the equivalence principle, but that doesn't mean it's affected. it's just relative.

> (Surely, the gravitational force of the black hole must be warping time in some regard.

most representations of black holes state that its a physical singularity (although this is fundamentally unphysical) so it would have infinite density and zero volume at the center of its event horizon, but that is essentially a limit becuase time would keep slowing down as you approach it relative to an outside observer, and you'd never reach the center.

>>2611

>When we observe galactic drift throughout the universe, and notice that everything from center of perspective is accelerating from its projected course, is it a plausible explanation that dark matter is merely the absence of time?

no. an absence of time is an absence of change, and the mass affecting the galaxies are clearly changing its trajectories. plus like i said its not moving at the speed of light based on our best theory, so it can't not be affected by time, or be an "absence" of it if you want to look at it that way.

> in the absence of mass, timeflow increases.

this doesn't mean anything unless you are talking about an observer and know his mass and energy, and if he had zero, he or she wouldn't exist. do you sorPost too long. Click here to view the full text.


 No.2619

>>2615

Thank you good sir. You have helped me much on this day.




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