The new /sci/ wikihttps://4chan-science.fandom.com/wiki//sci/_Wiki(More resources in replies)
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.
These are the two main sources of comets visible from Earth:The Kuiper Belt is a disk-shaped ring located just beyond the orbit of Neptune. You can tell a comet like Halley comes from there because its orbital angle is flat (meaning it stays mostly aligned with the plane of the planets) and its orbital period of 76 years.The Oort Cloud is a vast, spherical shell of icy debris that surrounds our entire solar system. You can tell a comet like Hale-Bopp originates from there because of its steep, highly tilted orbital angle and the extremely long duration of its orbit of 2533 years.
>>16925764>few other like minded individuals if you catch my driftI don't.Are they all robosexuals like you?Are they all men and ypu will all sgare the same robot girl wife? Will you also share your fleshlights?You don't have to be ashamed of your kinks and move to where the sun don't shine (kuiper belt), i think the next big social movement after lgtv will be gooner rights and acceptance
>>16925764Similar dream to yours, but given the distances to the outer solar system, your idea basically requires you to be immortal. We're talking decades to centuries just to get there - you can't use the flyby probes as a stand-in, they're going way too fast to have enough delta-v to slow down enough for a capture. Only viable option without "magical tech" levels of delta-v AND acceleration on your craft is a slow chain of low energy transfers to Neptune, then to your destination, which may take longer than a human lifespan.Assuming the human lifespan problem is solved, I'd still go with a main belt asteroid myself. Kuiper Belt and Oort Cloud objects aren't very strongly bound to Sol, gravitationally, so over long timescales they're likely to get perturbed by stellar encounters.Gliese 710 is going to come as close as about 10,000AU to Sol in about 1.3 million years, which will wreak havoc on the Oort Cloud and probably cause a large increase in impactors throughout the solar system. And that's not even considering that it may itself have a cloud of gravitationally captured bodies around it that will wreak havoc on the solar system. It's 60% the mass of Sol, which is actually quite large for a star.
>>16925585Orbit can be stable even for small objects. Also the Oort Cloud is hypothetical and has never been observed.
>>16925774>where the sun don't shine (kuiper belt)Akshually, the sun can still provide an appreciable amount of illumination in the kuiper belt (maybe 60 lux on Pluto and down to 30 lux on the outer edges of the belt, though obviously it's going to be pretty fucking dark when it's not noon)
>>16926133Kek you'll get less light than on earth during a lunar eclipse.
Explain the process, scientificallyNot asking for myself btw I'm already white
>GOAT musician>generational talent>first/only person to transition from black man to white womantruly a revolutionary, is there anything MJ couldn't do?
>>16925550>The fact that he wanted to be like the white women instead of like his brother suggests that he was abusedreplace "he was abused" to he WANTED to be abused... he saw what his brothers did to those White women and he wanted to not be like his brothers but BE the White woman.
>>16925415I like the question. Guy actually did turn himself into a white woman in every way except for the jaw. It's weird as fuck. People try to explain away his transition "it was vitiligo" but it looks fucking nothing like that. Dude did it on purpose.
>>16925415>Skin lightening creams have commonly contained mercury, hydroquinone, and corticosteroids.>...mercurial compounds can also contribute to long-term renal and neurological complications, the latter of which includes insomnia, memory loss, and irritability.[1]
>>16925415Bleach
nathenatics edition
>>16926264I'm confident that all calculus texts you looked at - I mean at least Springer texts or whatever - were clear about this.Basically, just from writing down the definition of f' in terms of limits, you have that \Delta is finite. And no math textbook uses \Delta in place of d if the limit has been taken. At worst, some thermodynamics books may do this.
>>16926323nta but most calculus courses are pretty bad, they just start using d's instead of deltas because "that's the calculus notation lol" and then they give you a table of rules to memorizeluckily if you just memorize and keep going to higher courses eventually you pick up the skipped details (or you fail out)
>>16926331>a table of rules to memorizeI like the Keisler book from the wiki, if you actually follow along with it you don't need to memorize shit because everything becomes dead obvious at a glance.
I saw I cool problem on the internet. The dimensions of the cracker are 60 mm by 120 mm. The dimensions of the cheese are 73 mm by 88 mm. It always sucks when some of the cheese is hanging outside of the cracker. So the problem becomes as follows. What is the maximum percentage of the cheese that can be in contact with the cracker when you put the cheese on top of the cracker?
>>16926361100%you bite off the excess
I don't get it..."States"?"Phases"? https://youtu.be/S3eqw3hLRRU?si=16U-qfmCIvjctoGt
>>16925852Liquid is what you get if you have only the dominant genes of a super soldier and solid is what you get with the recessive genes
>>16926223Ice IIce IIIce IIIIce IVIce VIce VIIce VIIIce VIII
>>16925856then how cum there is enthalpy of fusion, triple points?
>>16926313DELET THIS
>>16926313>There are more forms of ice than books in a song of ice and fireKek
Rizzler born in 2000 here. What was it like for you boomers and uncs to be deluded into thinking Pluto was a planet?
Not me senpaiI was always convinced that little morher fucker was hiding something.
Peer support group edition.Previous Thread: >>16894981This 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.
>>16925213Defense, semiconductor and medical device companies hire physicists for some roles, but idk what qualifications they ask for. Also, there are lots of companies that hire basically anyone that seems smart and has a STEM degree for project management or data analysis positions, but those kinds of jobs are as boring as they get and can probably be offshored to india easily. If you are willing to do a masters then there are lots of masters for both ME and EE shit that you can get into with a physics degree. I've worked with chip designers that did Physics -> Chip design masters.
>>16926036Go for a masters (VERY IMPORTANT ->) at a location with industry presence for the subfield you are interested on (<- VERY IMPORTANT) and start shooting for internships as hard as you can. Almost all new hiring is being done through internships right now.
>>16926288>Datacenters aren't going to pop.Even if it doesn't pop, the buildup is going to slow down a ton after a certain point. What is happening with datacenter related EE jobs is the exact same thing that happened with telecom related EE jobs during the dotcom bubble. A lot of graduates went into them because they were highly paid and the subfield that was hiring the most, only to get destroyed when the infrastructure buildup slowed down.
>>16926292The only point I was making is that it isn't specifically data centers that are going to lose. It is the people that think paying any premium to get ahead in a soft technology field are going to be eating ass when the technology improves faster than their product lifecycle - yes, the product may as well be synonymous with data centers, but it is particular data centers built in a certain time frame by specific companies. Another somewhat important thing to watch out for because of the Israel-Iran war are computer chips. Things are going to get spicy when the diversity CHIPS plants fail and US has the gauntlet already thrown out.
>>16926173protein science is like the most intertwined field with organic chemistry out of all the biology fields because they are basically large polymers folded up on themselves.
Why does the brain choose specific i.e. bad words to scream them uncontrollably?
>A good question on /sci/.I'm a mathematician not a neuroscientist but given how retarded they are I may as well be after several hours of semi-stoned perusing of Wikipedia on the topic of neurosciencewhen I was a teenager.So, the circuit in the brain responsible for threat detection, specifically the one that tracks threats in the lower half of your visual system, such as spiders, snakes, sharp falla, etc, is the same circuit used to swear. So, curse words are always words that correspond with danger or the possibility of reputation damage. Fucking is taboo, shifting is taboo, pissing, sneezing is a kind of normalized taboo so its ritually cleansed of social damage by others explicitly forgiving you on the behalf of their imaginal recreation of their parents merged into a single, hallucinatory deity. Nigger is the ultimate curse word becase it signals danger (blacks are violent) and social taboo (being around them unwillingly is considered indicative of low social standing) simultaneously.
I’m tired of pretending that lefties aren’t a bunch of morons
>>16920744Why are reddiots so mentally broken about the evil word?
>>16926045Reddit is a bot farm funded and entertained by neoliberal enterprises interested in making sure that modern-day leftism is nothing but identitarian garbage.I already pointed this out. >>16922176
Most of the human race needs to have its nose broken.
What is gauge theory.If you can't explain it simply, then you don't understand it.
>>16920408>check out wiki>look up gauge>gauge theory is racismokay
>>16926112First you have a physical system you want to study. Next you use your basic understanding of it to formalize it by writing a mathematical model. Then you use that model to gain deeper and more detailed understanding of that system, and possibly to make more advanced models to study it further. Understanding comes first. Math comes second. There's no way around it. Putting math forward means you literally don't know what you're doing. That's also why you have to be able to explain it in simple terms without math. If you can't then you don't understand it.
>>16926127It's funny to watch you constantly weasel yourself out of a concession with qualifiers. > Basic understandingcomes first, long before modeling, yes. But "basic understanding" is not "thorough understanding". Basic understanding is insufficient to give explanations that aren't regurgitating existing explanations. If you can't show that you can gain deep, thorough understanding (which is the kind needed to make simple explanations in the first place) without math, then you are simply wrong for reasons I already explained. I know you will keep going in circles now. The fact that all your arguments stop at an absolutely rudimentary level of understanding that isn't useful to actually DEEPEN your understanding of subjects brands you as an eternal undergrad.
>>16920373Gauges are a generalization of reference frames from classical mechanics. Because everything you wish to describe is curved, the Cartesian picture of only having to choose the 3D orientation and absolute position of your coordinate system to pick falls apart and are replaced by infinitely many (point-wise) assertions. Even in classical mechanics you can easily see something like that happening when you go from Cartesian to curvelinear coordinates. At each point your coordinates are basically Cartesian for small displacements, and the curved parametrization is essentially infinitely many Cartesian frames glued together.While the choice of gauge is physically meaningless, sometimes you can have observable effects that can be attributed to properties that existing in all gauges simultaneously. Stern Gerlach is a famous experiment where you are basically measuring the fact that the experimental setup has no gauge that isn't discontinuous (even if the position of the discontinuity is gauge dependent, the observable only depends on one being there).
Probably wrong place to be asking this but seeing that I'm doing a course with 4 vector notation (which makes gauge invariance easy) this is tangentially related, so somebody might help me:Going through Tong's AED lecture notes and he wants to solve the wave equation in the Lorentz gauge, and to do that he basically has to prove retarded potentials. But, to do that it's a mix of Green's function, Helmholtz equation, AND fourier transforms, and I genuinely feel each step is an asspull I genuinely struggle to see why it's done like this. After spending some time reading into it I kinda get the concept of each operation, but when dealing with greens function of fourier transforms, why do you put the G inside the integral at the end????
I'm a novice, so I'd like some perspective on this, not only from people who agree with this, but with people who disagree with this especially.Is it possible we don't see evidence for Out-Breeding Depression in humans because modern medical intervention supersedes the consequences of Out-Breeding Depression, i.e. Asian Mothers with non Asian Fathers having a 33% higher rate of Caesarean birth, mostly due to skeletal mismatches between their Pelvic Bone and the Cranium Size of their children, an issue that in the natural world would likely result in reduced fertility within that demographic, but due to C-Sections this issue can be circumvented, and the genetic mismatch can continue to breed and spread, necessitating further dependence onto modern medicine in future generations.Given the numerous racial distinctions:>Fat distribution>Muscle Anatomy>Bone Mineralization, skeletal structure, skull shape>Pore size>Larynx and Speech comprehension geneticsEtc. Is it possible that more instance of out-breeding depression exist that are flying under the radar, and this is possibly one reason why the modern populations have so many health related issues?https://med.stanford.edu/news/all-news/2008/10/asian-white-couples-face-distinct-pregnancy-risks-stanfordpackard-study-finds.html
>>16920523>>16923172Take the American Tribes for example, their populations have been so decimated causing inbreeding to become more prevalent. They can either unite under a common banner and keep their entire stock alive, losing their individual cultures in the process, or eventually just be replaced and wiped out.Obviously the larger tribes might stand a chance, but they first need to recognize the necessity of preserving their blood before they can make more refined selections, which is why any individual action has to lead to collective acknowledgement, because if they aren't all on the same page then they might lose a lot of valuable genetic stock.
>>16923172The problem is multifaceted and compounded by ideology.I found this useful to understand some of the issues. it's a flawed analysis but the message is I think correct about methods of deception and how they subvert our intent.https://www.youtube.com/watch?v=-vWnKwF7ZsE>>16923175Kinda interesting but I heard one reason american tribes picked up christianity so fact was because their own mythology was quite similar.I think previously it was interpreted in a more tribally beneficial perspective. but these grand shaping ideologies focus on our immortal soul and the fate it affords.I think that's where the subversion resides but also offers opportunity. Religions seem quite schismatic but I think this splitting nature is less about the ideology and more about people wanting their own empowering group cultural identity.If our observations of optimal breeding distance are applicable here that would mean these sects and their unique customs and marriage rituals serve to reinforce the groups endogamy in the face of universalist equality pushing.
>>16924704Christianity was designed using half truths, elements from every culture that have parallels or historical relevance, like the Great Flood.It's two truths to sell a lie, you take something verifiable, like the Great Flood, and use it to push in your own subverted truth, people get the bargain deal buying the two truths and the lie, and think they got such a good price they never question the quality of the product they received.If we take climate based racial separation as an axiom, any religion which seeks to destroy this distinction or spread its word beyond its confines is basically an invasive species, grown out of balance. Of course there is an objective and universal truth, but I'm not sure how you would begin to relay that to another culture without one or the other party losing sight of themselves.I'll put this video on in the background while I workout.
Apparenty the average birth defect rate is like 3-4% while for close incest couples it's like 6-8% which is higher but not actually much higher.Don't really know what to do with this information, thought I'd share it here.
Oh look, another racism thread for /pol/ pseudo-science chud schizos. This is what? Only the 100th thread this month?
Replace material with real. Is it real? Then there’s something there to it. That’s material. To say something isn’t material is to say something isn’t real.
Even thoughts have energy.
I am NOT electricity
>>16830683Ok
>>16830683
>>16925104Hm.
Pythagoras was right and all of modern mathematics is pseud quackery. The only numbers that are useful, and which actually exist in the real world, are whole numbers or numbers that can be represented as a fraction of whole numbers. Literally nothing else make sense. My reasoning?1. 0 is bullshit. How could nothingness be a number? You violate the entire concept of nothingness. Nothing =/=Something.2. Let's say I have one long rod and two smaller rods of equal length. I want to figure out the length of the longer rod. So I put the two rods next to it and, oh alright, I see I need to cut another small rod in 3 pieces and put one of those pieces with the two other smaller rods together to equal the length of the longer rod. No matter I can make up a whole new unit after the length of the rods. Let's call 1/3 of a small rod 1 inch, so that the two smaller bricks are 3 inches and, adding these all up, boom! My longer rod is 7 inches. Pretty easy right? Pretty intuitive right? Makes sense in the physical world, right?>here anon, here is a rod sqrt(2) inches long! For giggles, how many of these can you fit next to the 7 inch rod?Erm well, at least four, but then I have 1.34314575051... left over? Ok I guess I can add 1 but now... wait... excuse me but WHAT THE FUCK!? No matter how hard you try you'll never be able to find a fraction of integers to represent what's after your decimal point. Excuse me but... WHAT THE ABSOLUTE FUCK!? How the fuck can you ever complete it then!? If it goes on forever like that without becoming periodic then HOW THE FUCK COULD I EVER MAKE UP THE REST!? You can't even take it all away to get nothing when you subtract. WHAT!?>Excuse me sir but I'd like sqrt(2) apples please!Ok here is one apple sir, and here is... umm...Yeah EXACTLY! How the FUCK do you irrational numbers make physical sense!?>B-b-b-ut what about pi?22/7. Done.3. Don't even get me started on those "negative numbers" bullshit..
>>16901132Guess what? He was literally right and now all the kids are watching youtube shorts with family guy clips underneath it.
>>16906322Yeah so what? Even atheism is a cult.
>>16924775meant for >>16905743
>>16924775Who is their infallible great leader?
DIS NIGGA ‘ATED BEANS
>Mars astronauts will drink recycled piss in order to survive
>>16926185Maybe they would use the polar frozen water to cover living domes in Martian mud for radiation prevention. But I think they could get hit with storms in the open. Low altitude, hidden habitats?
>>16926189Imagine being so fucking stupid you believe in the idea of polar ice. Nigger did you never take a chemistry class? You never saw a triple point chart? Guess what the atmospheric pressure is in the fucking moon. Any ice sublimed millions of years ago.
>>16926190there's no sublimation in the absolute zero of space
>just entered the cockpit awaiting launch and boy am I parched>time to drink my own piss
>>16926348>I studied, I grinded>I locked myself in the library all those years, for this moment>*sips own piss*
Why are there no more einsteins?In the 21st century we have not had any field revolutionized by a new theory or new invention. There are zero iconic scientists in the past two decades. Ongoing projects in any domain keep getting delayed, or take much longer than anticipated. Also IQ has been declining, and school achievement standards have been decreasing. Even though more papers are being published than ever, scientific innovation seems to be slowing. In the first decades of both the 20th and 19th century science and tech moved faster. Is humanity getting dumber?
>>16926325>look ma i posted it again!
>>16926317Newton was literally from the yeomanry not the nobility
>>16926330>wealthy family which owned multiple homes>attended a private academy>attended collegeyep, serf farmer right there
>>16926333Literal slave class.
Maybe off topic but maybe the world simply has no NEED for Einsteins. I wonder how many people have made some research as a pet project of theirs, be it about something genuinely new or merely using the already existing knowledge for something that hasn't been made yet, did all the research, engineering, material science, schematics, blueprints etc. submit it to academia/NASA/ESA whatever only to learn they already had thousands of similar proposals/papers, even more detailed and well researched for decades and decades and they never got to test them/try to implement them because there was no economic incentive/political will for it. That has gotta sting for anyone trying to make an actual contribution or even merely trying to get a feedback for it. Basically "Simpsons already did it!" but science related.Add in all the low-hanging fruit being picked and bunch of stuff people have already mentioned and there you go.
What will happen to aeroplanes when we eventually run ouf of jet fuel?>inb4 it's infinite and we will always have itokay schizo, but what if we do run out off itCan't really make electric planes because of third law
>>16926242>run ouf of jet fuel?hydrocarbons (all jet fuel, gasoline, diesel can be made from carbon dioxide and water vapor in the air. One only needs an energy source, something like solar, nuclear or hydro (water going through a dam). Google e-diesel or search the Audi website for details. Audi is already doing this, though not yet for jet fuel.
imagine being the company that gets the perpetual patent on 3d printing gasoline from air
>burn coal to generate electricity to turn atmospheric CO2 into coal
>>16926343>do this>but obtain government green energy grants to make it incredibly lucrative
>Can't really make electric planes because of third lawTheoretically you can use any propellant other than combustion gases or whatever.It is even fair for basic jet engines, where the largest proportion (by weight ejected) of propellant is basically air from the environment.Heat this air to thousands of Kelvins with any electric mechanism other than fuel burning, and that's it.
