Let's say you live in an area where droughts are threatening life and farming. You want to produce fresh water, have a cordillera less than, say, 100 miles away from the sea, some empty ponds, some fresh water reservoirs, and enough energy (in the form of solar panels or whatever) to pump seawater to your ponds during spring and summer.Then, during winter, you use the freezing cold air to freeze the seawater (see this paper for some methods: https://www.nature.com/articles/s41545-022-00158-1), to the point of separating ice from the salt. You then move ice or pump fresh water to your fresh water reservoirs.As a bonus, you just obtained salt, lithium and other minerals from the saltwater, AND you can recover some of the energy you used to pump the water during summer.Could this be done? Can you find issues with this idea?
>>16886303(cont)>when talking about energy?*energy efficiency>according to google, plastic (HDPE, PVC, ...) piping has a much lower friction factor than steelsource: https://personalpages.manchester.ac.uk/staff/david.d.apsley/lectures/hydraulics2/l2.pdffrom what I'm reading, a lot of your criticisms could be addressed by considering efficient designs from the start. for example, many papers say oil pipelines or water distribution systems can be made more efficient by calculating efficient changes to their current designs, switching from gas-fired turbines to electric motors, etc. but I have no idea how much efficient could this be madeI guess a lot of that has to do with infrastructure, though, and that might make everything more expensive.>>16886319>You want to heat the ocean to make it lighter?>>implies lifting water uphill with open channels>>Aqueducts go *down*, brainlet.>>To get 1 KG OF LITHIUM ($15 value), you pump 5,800 TONS of water up 2000m.holy fuck, you are the one calling me retarded?I doubt you are the same anon. you either lack imagination or are trolling now lmaoComment too long. Click here to view the full text.
>>16886327>heat the water to reduce its density>you either lack imaginationMy brother in Christ, thermodynamics is not a creative writing exercise.Let's look at your "imagination" vs. Physics:1. Heating: Water density at 20°C is ~998 kg/m3. At 50°C, it's ~988 kg/m3. You save 1% on lifting mass.• Energy to lift 1kg up 2km: ~19.6 kJ.• Energy to heat 1kg by 30°C: J = 125.5 kJ.• You are spending 600% more energy to save 1% on pumping. This is the single dumbest engineering proposal I have read on this board.2. "Efficient Design" Cope: "Just make it efficient bro." You can't optimize gravity. The theoretical minimum energy to lift mass is fixed. No amount of shiny plastic pipes or electric motors changes .3. The "Bonus": You are spending $1,500 in electricity to recover $15 of Lithium. That is not a "bonus." That is bankruptcy. You are literally burning money to move salt around.You aren't solving a drought; you're building the world's most expensive water slide.Go apologize to your physics teacher.
>>16886332anon, I know how to calculate energy usage. but YOU said this system wouldn't be able to recover energy because of friction. now that I showed you a tiny bit of interest in actually discussing things, you switch arguments.fucking kekbtw, you'd be lifting water during summer using solar energy and recovering whatever you can during winter. do you not realize that you can also get heat for free from the solar panels?you obviously didn't read shit of what I wrote in the fucking OP, because you don't actually care. you just want to be contrarian.
>>16886342>Switched argumentsNo, I'm piling them on because your fractal wrongness has layers.Let's talk Efficiency (Round Trip):1. Up: Pay Potential Energy (mgh) + Friction.2. Down: Recover (mgh) - Friction - Turbine Loss.Standard Pumped Hydro (vertical lift) is ~80% efficient. Your 100-mile horizontal slip-n-slide? You'd be lucky to hit 40%. You are wasting most of your "free" solar just fighting drag."Free Heat" from Panels:>heat water to pump it easier>freeze it in winterYou want to pump warm water into a reservoir... so it stays warm... right before you try to FREEZE it?Water has high thermal mass. If you heat that lake to 40°C in summer, you just delayed your winter freezing by two months. You are sabotaging your own critical path to save 0.5% on density.You aren't a visionary; you're a guy who thinks he can beat the casino because he found a coupon for the buffet.Comment too long. Click here to view the full text.
>>16886350> 40°Cagain, I'm not sure if you are trolling anymore. you are taking cold (so around 4°C) water from the bottom of the sea. you do know that water is denser at that temperature, right? heating it a bit would make it less dense. no need to heat it that much to get a little bit of efficiency. and you are taking it at summer anyway, so you could take advantage of the heat.>so it stays warmno? what is a radiator? >right before you try to FREEZE it?anon... 6 months is a lot of time, more than enough to reduce its temperature. you know, there are lakes in mountains, and their temperatures vary enough to produce ice during winter while being completely liquid in summer.>You are wasting most of your "free" solar just fighting dragthen maybe find other ways to reuse that heat to make the system more efficient?anyway, that was just an idea. no need to get mad.thanks for the criticism, I guess. but I'm not sure why you got so mad at me. it might be a retarded idea, but again, you seem to have missed the point. even at 40% recovery, if you could produce a lot of fresh water, it could be useful in some places.I guess there could be variants to this idea. since your main criticism is the energy lost to friction due to length of the pipe, you could instead find ways to make it shorter, like, finding hilly places that are closer to the coast (my country has many), or, instead of moving the water during summer, you could lift it to artificial ponds whenever there is sun during winter, similarly to pumped hydro setups. google says pumped hydro systems recover about 70-90% of the energy... that's good enough.main problem here is that these places might not get cold enough, precisely because of how close they are to the sea...
Is science a human right? Is this ethical?
>>16885442I see a suspicious episode of self-harm in your future.
>>16885397Should everyone have the ability to hear?
>>16885394because science is not a physical thing or a specific school, it is a methodology that it is not possible or practical to restrict humans at any level of the hierarchy from performingyou do "science" whenever you observe a phenomenon and attempt to replicate a predicted result by repeating or altering the action that instigated it. non-rigorous and imprecise science to be sure, but that is, at its most basic, all science is.the concepts of "the institution of science" or "the scientific consensus" or academia are separate matters but those are not " science " as an basic raw concept
>>16885442Then you are either ignored or someone publishes you, though the latter is unlikely without certain requisite social skills and basic knowledge and training in the generally accepted channels by which these things are typically done.There is a website called Substack that is very popular among scientists and doctors to speak their mind and present ideas or review other peoples' ideas without direct limit or control by scientific governing bodies.
>>16885881>an (...) conceptHoly halfwit
>Thousands of pages of literature>Thousands of hours of work>No sleep>Run on coffee and whatever zombies have>Get scolded by everyone above you>Only way to survive is to develop a God complex or, Stockholm Syndrome>Never ending ward rounds>Hair loss>Not even time to date or jerk offI hate this life. Why can't it be simple?
I'm 40 and I have enough money to survive on for 5-10 years living comfortably. How idiotic an idea would it be to go to med school. Inb4 you're too dumb I'm just wrapping a cognitively demanding tech career and was always a great memorizer
>>16886002Y medY nowI dont really want you to answer ITT. You're going to have to answer these questions well and get into med school against people who have answers for these questions, have been groomed for med since at least freshman year of college, and didn't choose another field first.>how stupid No dumber than anyone else deciding to go into med. Go for it, or don't. Think long and hard about it, medicine is a hard, shitty, thankless, increasingly poorly compensated field. Now go and stay go, premed.
>>16885999Trips of truth
>>16874095Do you want to be cut open by an undisciplined retard?
How accurate is the GAMSAT essay scorer? I got 65 on my essay
what's the best theory of your own that you've ever come up with? did it pan out?
>>16885367Yeah theres no problem at all, i'm referring to the problem in the "proof" of x=-x.You can be on the main branch and say 1=sqrt(1)=1, you can be on the other branch and say -1=sqrt(1)=-1, but you cant switch branch at will to say 1=sqrt(1)=-1, like that anon said
>>16873253I met a guy who had theories.He went to school and studied all the old theories.When he left unsatisfied, he started pushing his own theories.His theories were adopted.Thats what you do if you want to be taken seriously.
By "theory" I assume you mean "hypothesis"When I was in 6th grade we had a very pretty spritely woman for a science teacher and she hammered into us, in no uncertain terms, that a hypothesis was NOT a guess. She repeated this lesson over and over: that one cannot simply make random guesses or speculation about any interesting factoid, and blithely call that a "hypothesis" or "theory". It must be based in observation with as much prior established fact as possible and present a falsifiable idea that can be tested and measured and reproduced to satisfy an ultimate conclusion. The addition of too many variables creates too much uncertainty that can disqualify many ideas from any sensible testing that can justify it being called a scientific hypothesis.tldr don't just guess random shit and call it a theory
>>16873253The one you're all struggling to deny.
>>16873253Everything is twinkies
>Cherenkov in "vacuum"When will you people just kneel to ether?https://arxiv.org/pdf/1810.05027
>>16885978>https://arxiv.org/pdf/1810.05027>particles traveling through electromagnetic fieldsIts called acceleration
>>16886042Cerenkov =/= Larmor, physlet
So i lowkey need to use this thread to vent about Ken the retard for a second here He rails against muh ebul AI endlessly but then posts shit like this on his substack;>kenwheeler.substack.com/p/fact-based-ai-destroys-so-called... Guy has a huge ego issue with being proven wrong on anything or being intellectually held accountable for what he says by anything but a passive admiring audience, huge huge hypocrite. In one vlog the other day he went off like "Don't ever trust AI, it's evil!"He's pretty brilliant but also a huge hypocrite and generally an asshole on a personal level, don't ask how i know lol
... Same for the forced and constant blathering about "academicians" in general. Like my guy, just outright say you can't stand open criticism by a peer in a non-curated debate and won't ever cross that evaluation treshhold due to your identity having become utterly intertwined with your own iterative/non-expansive framework. I hate when otherwise bright people screw themselves over like this out of a misplaced sense of 'pride'
>Why isn't there an official explanation for the HUGE rise in fetal deaths starting in Q2 2021? There was not a change in reporting rules and there was no public campaign telling doctors or people to report FETAL DEATHS.https://x.com/stkirsch/status/2008267839938215958Very interesting but not really surprising for me xDThats barely beginning, by the way. Would be worse and worse year after year. Thats how poisoning with a gene therapy works.A 2023 retrospective cohort study using VAERS data from 1998-2022 found significantly elevated proportional reporting ratios for miscarriage, fetal death/stillbirth, and other pregnancy-related adverse events after COVID-19 vaccination compared to influenza vaccines. The relative risk for miscarriage was 177 (95% CI: 114.4-283.5). The authors called for a moratorium on vaccinating pregnant womenhttps://pmc.ncbi.nlm.nih.gov/articles/PMC10694405/A 2025 medRxiv preprint analyzing 226,395 singleton pregnancies in Israel (2016-2022) reported higher-than-expected fetal losses after mRNA COVID-19 vaccination in gestational weeks 8-13. For dose 1, there were approximately 3.9 additional losses per 100 pregnancies (95% CI: 2.55-5.14), with most occurring after week 20.https://www.medrxiv.org/content/10.1101/2025.06.18.25329352v1.full.pdf
>>16886333Oh nooo think of the ants
>>16886333>That heat graph is completely misunderstood. We don't love space rock more than our families. It was inclusive. It was inclusive!Don't take much to scratch through the facade.
>>16886341>>16886346>posting this unironicallyGee I wonder why someone would ever choose not to care about you.
>>16886355ok really though why would you care if all life on earth vanished?
>obviously aligned with presidential periodsShouldn't it be obvious? either they're including official abortions or women are aborting more without specifying the death cause and or it's more reported.
>life expectancy hasn't actually changed AT ALL for humans that make it past adulthood>people still easily die in their 70s from the same cancers and other ailments that have always killed humansWe haven't improved diddly
>>16884618now you can combat said pathogens and survive to live longer meaningless life
>>16884611>when increased life expectancy is really decreased child mortality
>>16884611>life expectancy hasn't actually changed AT ALL for humans that make it past adulthoodisn't dying the point past adulthood?also show your work.
>>16884618>But we still die in our 70s just like our ancestorsno anon our ancestors on average died in their 40's,>>16884679wrong we aren't space faring because we can't cooperate long enough to become space faring.
>>16886353>no anon our ancestors on average died in their 40's,Depends how far back you wanna go I guess. OP's whole point, as echoed by >>16886259 is that infant mortality brought down the average lifespan more than quality of life into adulthood did.Hence why it's worth looking at the actual data here: >>16885077In 1841, a British newborn had a life expectancy of ~42.However, a 30 year old would be expected to survive to ~64.The difference represents people who died between birth and 30 years old.But a 30 year old in Britain today is expected to survive to ~82 which is a significant increase and essentially means OP's point is still bullshit.
>blessed with insane intelligence>wastes it all on a board game
>>16884002
>>16884002hes made his millions and will be in the history books for millenia, all by doing whatever the fuck he wantsid be jealous too
>>16885801I've seen somewhere that he has unusually high % of neanderthal genes.What I like about Magnus is his extraordinary sanity. Probably fits the definition of average mentally healthy person.
>>16884087>what is calculation
>he couldn't make pro rank in baduklel
What if there is just no such thing as a "point" in reality and any objects that appear to be "point like" are in fact rings?
Rings?
RINGS!
>>16885690What if particles were actually tiny vibrating strings looped around tiny invisible dimensions?
What is a ..... "ring"?
>>16885690>there is just no such thing as a "point" in realityThat is technically correct, just as a holographic projection only appears to have identifiable "points" the same holds true for timespace
Does anybody have any scientific theories as to how consciousness might persist after death? Or are we really just supposed to act like we're racing towards an empty void and that's okay
>>16867117Consciousness is the prima materia (Elemental Elementalism 1.1.).As this Earth world came into consciousness, it will go out of consciousness, and a new world will come in
>>16885770So your dead body will still conscious since consciousness is a primary element of your dead body rather than your functioning living body being a primary prerequisite of your consciousness? Even when your body is burned, the ashes are still consciously attached to the body and still feel all the pain and emotions associated with it?
>>16885770>is the prima materia>>16885772>Even when your body is burned, the ashes are still consciously attached to the body and still feel all the pain and emotions associated with it?Alternative hypothesis: consciousness is a property limited to very advanced biological systems and computers, it's entirely based in a brain or processor, and anesthetics, powering off, or death are all ways of ceasing it.
>>16867117Energy without mass move at cNDEs reveal people "moving through tunnels of light"When you're a photon everything else in the universe looks like a tunnel of light.Where does light go? Into black holes that a retrievable as white holes when you rewind the universe or phase shift into syntropy
>>16867117Well, sweaty. Some might say we sluts are all *braaaaap* a part of the same tang really. (You), me, the sluts reading this, the tapeworm in my gut... when you die... other sluts keep on livin' and shit. They conscious and shit. So yeah.
How do I learn mathematics as a hobby? Any books or courses to recommend?I learned up to AP Calculus in high school but forgot everything.
>>16880804Start with AOPS prealgebra -> AOPS intro to algebra -> AOPS intermediate algebra -> Hammack’s book of proof -> Paul Zeitz’s art and craft of problem solving.Then you’re ready for Spivak calculus.
>>16883827Are other aops books any good?
>>16880696I like Rogawski, but Stewart is what everyone else uses, so use that I guess
>>16880694>How do I...
>>16880706NTA but I would also recommend mathisfun.com if you want to brush up on remedial concepts
Philosophically, existentially, and ontologically, what would the opposite of Earth be like?Our lifeforms are mostly flesh and blood.Our weather is cyclical.Our environment constantly decay and renew itself.Our materials are made of tangible matter.So would an anti-Earth be a world where lifeforms are not organic, don't experience aging, weather is still, the environment never decays, and "matter" is something ectoplasmic or fluid?
>>16886125Heaven or Hell.Unaging, unimaginative, unresponsive, unexpressive, unchanging, etc. On earth, everything is constantly changing, everything from people, things, universe, concepts, are all changing. Change is our existence. And suffering as a result of such. Which drives our responses to escape it, for a better tomorrow. The anti-earth would be a stagnant luster of immortality where there's ever eternal decadent.
State of britbongs in the 2020s edition.Previous Thread: >>16871374This 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.
>>16885919Grades are the only way for us without connections to climb up. 4.0 GPA means that you have never once woken up with a headache on exam day, you have never once made a small mistake on an exam, never made a mistake on any assignment, never forgotten anything from any lecture.
>>16885917they study piss easy courses with heavy grade inflation.
>>16885814That's not an ambition outside Lithuania or whatever shithole you are from
>>16885952it is when you're 30
>>16885721>applied to a different position at the same site>got an interview the next dayahhh I need to email the mf before this goes on too far
Why do we have an innate reaction of disgust/horror when we see an image of a virus? It should just be abstract geometry to us, given we never evolved to see that small and it's only using recent technology that we can. Is it ancestral memory from when we were single celled organisms?
>>16885845Dunno, trained biologist so my "disgust response" is pretty much overwritten. But looking at the thing I notice a resemblance with a tick, or similar blood-sucking insect. An intrinsic aversion here would run back well to our ape ancestors.
>>16885845I don't, I think they look cool
>>16885845>wejust you libtard
>>16885845>Why do we have an innate reaction of disgust/horror when we see an image of a virus?do we? I don't. even when I saw that as a kid. I thought it looked cool.
>>16885845>wewhat is this we magatard?
I literally posses the knowledge that I will wake up early tomorrow but I somehow cannot pass that knowledge along to whichever part of my brain governs falling asleep. What kind of retard designed this?
>>16886301The cicadan rythms keep me up. Noisy bugs.
>>16886301your body is programmed to keep you awake for multiple reasons
>>16886301>Scientifically speaking why can't I just make my body sleep?IDK OP... I just roll over on my left side and within 15 minutes I am asleep.
