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mooishbeam · 8 months

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『♡』 Extra Credit

♡ featuring: gojo & geto x f!reader

♡ summary: class is getting too hard for you, so you seek help. unfortunately, the help you receive is not what you expected. wc: 2.8k+

♡ cw/tw: manipulation, praise, light degradation, throat-fucking, edging, threesome, spit roasting, rough sex, pretty mean gojo, cum play

notes: helloo! a slightly shorter one this time. hope u like :) my first jjk fic!! art by _3aem on twitter <3

You twiddle your sparkly pen with your fingers and eye the blank page. Chemistry-201 started an hour ago, and you’ve got nothing to show for it. Truthfully, you were exhausted thinking about having to attend. College was easy for the most part, even calculus. You couldn’t tell anyone the reality behind your performance block in this specific class. The excuse your friends heard was, “The slides are hard to read.” They were hard to read, but they’d probably be clearer if you actually looked at them. What you did like to look at, were the boys who sat two rows in front of you in lecture hall. The one with frosty hair would whisper through the entirety of class, while the quiet one diligently wrote down organized notes. That’s how you picked up their names:

“Quiet, Gojo.” he snapped, tapping the paper with his pencil as if Gojo would catch the hint. He smiled and poked his temple. “Chill Geto, the best doesn’t need to study.”

Geto sighs and waves his hand. “Not everything is about you.”

“Why not?”

Geto and Gojo you thought. Their names were sweet on your tongue. You squeezed your thighs together, imagining how their names would sound on your lips. On rare occasions, Geto would face your direction. Even though it wasn’t for you, it felt special, like you were the only person in the room. You wanted someone as hardworking and kind as him to notice you. Sometimes you’d catch yourself sketching the back of his head, promptly shredding the page after the bell. What started to unnerve you was Gojo, who was always aware of your shy glances even when his back was turned. His crystalline azure eyes bore into yours and you’d fumble for anything to look at. Even when you daydreamed dirty scenarios, he reads your mind. It made you feel guilty. When your professor dismissed you, you’d scattered up the steps, bag already packed. This strategy was efficient until the day you dropped your book walking out of class. Pale slender hands grabbed it before you could reach it. “Ah! Thank you-” You met eyes with Gojo, smiling above you like reborn divinity. You almost felt the urge to bow. “Gotta be careful, yeah? This shit's expensive.” You nodded another thank you and took the book, hasting away so he couldn’t see your flustered face.

All these minor incidents accumulated into the major issue currently surfacing; you are on the cusp of failing. Your parents readily applauded the other classes, perfect A’s. Just visualizing the scenario where you show them a D sends you into grief. You vow to change this outcome today. Your final exam is in a month and a half, enough space to master important subjects. No distractions, no Geto and Gojo. You meet with student resources after Chemistry to inquire about your study options and settle on weekly tutoring. You’re determined and prepared to give your all for this exam.

Next week arrives and you're full of vigor. You try your best to rationalize each problem, no matter how wrong you are; and you were very wrong, frequently. You’re mentally apologizing in advance to your tutor. You see Geto and Gojo quietly bickering. Gojo has long pretty eyelashes, and you can’t stop glancing at them. They swiftly point to you. Nothing unusual, until—for the first time—Geto turns to you. His eyes are fixated solely on you. You're startled and knock over your water bottle, pouring it all over your notebook. A domino effect ensues. The valuable notes you took smear from the liquid, and it drips from the table onto your mini skirt. You stand to dodge it but your open bag tips over and out the chair, spilling the contents all over the floor. The room is silent, and everyone in your vicinity is staring. Time stops as you gather your stuff and leave the hall to dry yourself. You’re in the bathroom now, dying from embarrassment as your brain recalls the moment repeatedly. The sly smirk on Gojo’s face. I have to get over this you thought. Your session is in an hour, and you don’t want to waste crucial experience. Surely it can’t get worse than this.

You show up five minutes early and patiently wait for their arrival. Fortunately, you’re afforded a closed off workspace with the tutor. You draw dainty flowers in your book until the door creaks open. To your surprise, you see tidy black hair and chiseled features. It’s Geto. Your personal tutor is Geto. The stars must’ve aligned to dispatch one horrific cataclysm. You contemplate what you could’ve done to the gods for them to punish you so harshly. He pretends that he’s never seen you. “(Y/N), right? My name is Geto, I’ll be tutoring you for the rest of the semester.” His professionalism makes you breathe easier, and you’re relieved, content with maintaining this attitude. Together you set up your notes and the first 15 minutes go without a hitch, simply reviewing the topics you grapple with.

“A lot of these are early concepts. They’re used in basically every class. Forgive me if this offends you, but how do you not know these?”

“Ah, I get a bit distracted.”

“By what?”

“Oh… um.” You shift your thighs back and forth, pondering a justifiable answer, oblivious to the way Geto ogles them. "I just have a hard time focusing.”

He scans your tight fitted shirt, then your lips. “I see.” Suddenly, the door swings open. Bright orbs piercing you, capturing you. You drop your head, hoping he won’t recognize you from the scalp.

“Yo Geto, look at this game I- oops.”

“How many times do I have to tell you not to barge in while I’m tutoring?”

“Haha, sorry ‘bout that…wait, I know you!” He exclaims. Gojo snatches a chair and sits so you’re sandwiched between them. Intently skimming the textbook as if you didn’t hear him, he grabs your cheeks and twists you to him.

“You’re the girl that wet herself today, right?” He laughs.

“C’mon, she's dealt with enough already.” Your wishful thinking fell on deaf ears; they clearly didn’t forget that easily.

“Heh, it’s too funny though. Geto, I told you about her remember? She’s always looking at us in class.” he teases. You felt a shiver go up your spine and your face get hotter. “That isn’t-”

“Shh” Gojo interrupts you. “Tell me, are we more handsome now that you have a closer look?” Your heart drops to your stomach and you stumble over your words.

“I-I’m sorry, I don’t mean to look. If I made you uncomfortable, I’m deeply sorry.”

“Nah, it’s cool. I like the shy type.”

“I think I should go.” You try to rise, but Geto pulls you from your skirt. If they wanted you, they would have you. "I didn’t permit you to leave. Sit. We'll continue.”

“I don’t know if I should-”

“Are you disrespecting the time I’m putting in to ensure you end with a decent grade?” he questioned. You went meek, reconsidering the effort you’d be wasting, and how badly you wanted Geto to acknowledge that effort.

“No. I’ll do it.” His smile is saccharine and alluring, masking the dark intentions pulling at his conscious.

“Great. Next chapter.”

You’re eight paragraphs in, a sheer glistening sweat on your legs. You can barely mouth the words. Gojo’s breath is painfully close to your ear, tickling it as he follows along the page, his thumb running under the hem of your thigh high socks. “You wore these for me, yeah?” he whispers. You clamp your thighs, and a scheming grin creeps up his face. Meanwhile Geto’s fingers are behind your neck, brushing it gently with his other hand steady on top of yours. The bare skin contact is disorienting, so much so that you hadn’t noticed you’ve read the same sentence for the past minutes.

“(Y/N)?” You snap out of an affectionate trance. “Huh?”

“Is something troubling you?” His nose is inches away from yours, taunting you.

“Mm, no.” Your trembling voice exposes the truth. “You seem frustrated. Do you need help alleviating that frustration?” Such a straightforward question is nerve-wracking. You've only imagined this in your dreams, calling out both of their names. The scandal that unfolds if people find out would be reputation-shattering for you. But desire burning in your dampening core blanketed those worries. “I don’t know what to say.”

“(Y/N), when someone offers you something, you should accept it and say thank you” Gojo adds. His hand slides deeper in your socks, groping the plush fat.

“Do you want it, yes or no?” The decision tosses in your mind. Until you finally manage a soft-spoken “yes.” Instantly, the air in the room switches, their gaze encapsulating you like prey. You feel smaller.

“This won’t be easy, though. I’m teaching you concentration. If you get through this quiz with us touching you, I’ll reward you. Understand?” Geto says. You nod at him like a lost puppy, ready to please him.

The quiz starts with ten entry-level questions. You get to work, and they get to devour you. Gojo parts your legs, salivating from the strings of slick sticking to your underwear and inner thighs. He litters kisses and lustful bruises along your neck, his hands trailing to your chest. Geto’s hands hike your skirt up and move to your underwear, circling the erect nub through the fabric. You’re on question three and can hardly achieve a scribble. He pulls your panties to the side and spreads your folds, toying with the mess. You have a loose hold on his shirt that tightens whenever he presses on the bundle of nerves. His fingers are skillful, knowing the right buttons to push to coax whimpers out of you. Meanwhile, Gojo tugs your shirt up, exposing your nipples to the cool air. He flicks one with his tongue, then envelopes your breast in his warm wet mouth. He sucks and bites the bud, tasting it and fondling the other. He moans, light pops as he comes up, gazing into you for approval. The walls are thin, you can’t get caught, but you need them deeper. They make you fall apart just to punish you, a sharp sting from Geto’s palm directly on your clit.

“If you can’t keep your voice down, I’m gonna stop. Are you sure you can handle it?” Geto teases. He definitely isn't stopping, but your panicked, yearning expression made his cock twitch.

“Yes! I’m sorry, I can be quiet.”

“I don’t know, you seem to be struggling. You wanna make me proud, right?” You nodded frantically.

He places a gentle, almost manipulative kiss on your lips. “Good girl. Then you’ll take everything I give you.” His digits glide vertically on your vulva until they slip inside, scissoring and massaging your g-spot. You somehow make it to question 6, but your mushy thoughts aren’t sure if they can recover from the rhythmic pumping and juices running down his knuckles. Gojo releases you for air, bite indentations dotting your mounds. “Geto. Switch?”

“Okay.” He says and begrudgingly drags his fingers out. You whine from the emptiness, but Gojo quickly replaces him. He gets under the table on his knees and forces your legs wider, appreciating the upcoming feast. His pink muscle licks a long harsh strip against you. The new sensation makes your back arch, and your hand cards through his hair.

“Too sensitive? Aww.” He moves roughly, slurping and lapping up everything he can get his mouth on. His grasp is tight, even with all your strength pushing him off is a challenge. Question nine passed, still shaking and stuttering. Geto pinches and twist your nipples but showers the pain with loving kisses. He pecks the back of your neck. You’re so close you start to involuntarily buck your hips. Gojo stops immediately, grinning at your frustrated cries, your essence covering his jaw and chin. “Don’t come yet, wanna feel you.”

“One more question, baby.” Geto says, caressing the swollen marks. You put your heart into finishing the last problem, an unintelligible number for your response. You can’t decipher the words; all you want is Geto’s praise. He takes the pencil out of your hand and counts the correct solutions.

“8 out of 10. I’m so proud of you, angel.” None of your answers were right. But he relished how effortless it was to make you happy, how much you starved for his attention. He searched to lock you away where no one could find you. You’re beaming nevertheless, smothered by his kindness.

“C’mere. Taste yourself.” Gojo husks before French kissing you, tongues intertwined. He moans into your mouth. “Want your reward now?”

“Please” you rasped, and he picks you up, pressing your stomach flat on the desk. Geto wraps around in front of you. He pulls his throbbing cock out and lifts your chin, propping it on your lips. “Open.” he coos. You loll your tongue out, looking up at him expectingly. He smiles and drives his length into you until your nose is flush with his pubes. His cockhead is deep in your throat, it burns, but you’re the center of his world in this moment and it makes it worth the ache. You worship it, savor him. Hollowing out your cheeks, you start bobbing your head. You drool on his balls, gently sucking them and tracing his veins with your tongue. His moans are breathy and deep, hand firm on the back of your head to prevent you from bailing. He denies your pleas for air.

Gojo taps his leaking tip against your clit a few times and slides himself in, whimpering from the soaking grip molding to his shaft. “A-ah, so tight.” he choked. His balls collide with your ass, and your orgasm hits hard. You tremble, eyes rolling to the back of your skull as you try to ride it out. But Gojo doesn’t let you and jerks your arms behind you with one hand. He pounds deep and fast, noisy plaps and squelching fervor pushing your limits; at the same time, Geto is face-fucking you. You were sure students heard the commotion by now. The men ravaging you sent a trail of fire crawling up your body. Tears smear on your face, gagging spit drips from your bottom lip, a mixture of fluids soak your socks, but your fuzzy senses can only drown in their pleasure. The spring coiling in your body is quick. Gojo’s tip kisses your g-spot perfectly and you embrace him. “Hey, you on the pill?” he asks. You're about to answer but he shoves your head down to Geto’s hilt. “Never mind, I don’t care.”

Geto’s movements quicken. Your disheveled face sends him over the edge. He blesses you with his creamy hot gift, spurting inside your gullet, accompanied by guttural sighs. “Swallow all of it.” You struggle but slowly get it down. You polish off the rest of his twitching length in revere and open your mouth for proof. “That’s my good girl.” He pats your head, and you lean into the warmth. Waiting for his confirmation.

“You wanna come? I’ll let you come, baby.”

“Don’t you fucking dare, you do it when I tell you to.” Gojo snaps. Tears prickled your lashes from overstimulation. Your whimpers stream out the room and he laughs through breathy whines. “Little pervert. You want people to hear you getting railed?”

“It's t’much! Gojo I can’t-”

Geto cradles your jaw. “(Y/N). Ask him for permission.” He is suddenly stern, and you obey him.

“Please lemme come!” you babble. His concern is clouded with sin.

“Yeah? Beg for it.” An orchestra of please’s sing, and you mean it, but Gojo didn’t care. He’d much rather watch your rippling ass and melting figure. Each thrust has you incoherent, and you plead more, enough to satisfy his smug demeanor.

“That’s better. Now come for me, all over my cock.” His command splinters, and your gushy walls convulse to form a white ring around the base. Gojo’s strokes get desperate as he approaches his release from your slippery heat. He pulls out and holds you in place, a few pumps before he shoots ropes across your ass and paints your vulva. “Yeah- you’re so fucking good.” he moans, mumbling and quivering through his orgasm.

They get dressed while you lie on the desk. You’re breathless and trembling, but they’re focused on cleaning themselves up. Gojo gets eye level with you.

“If you tell anyone, you know I’ll ruin your life, right? Keep it hush.” You can’t speak. He grabs your panties off the floor and pockets them. “These are cute. Imma keep it.” Geto reties his hair and smiles at you. “See you later.”

They abandon you, covered in come and items strewn across the table. You’re left to wonder what you’ve gotten yourself into. One thing was undeniable, however; you were really looking forward to next week.

#jujutsu kaisen #jjk x reader #jjk #jjk smut #geto suguru #geto x reader #geto smut #gojo satoru #gojo smut #gojo x reader #gojo x geto x reader #jujutsu kaisen smut

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thelegend9798 · 2 years

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Lights, catalyst, reaction! Converting CO2 to formic acid using an alumina-supported, iron-based compound -- ScienceDaily

Lights, catalyst, reaction! Converting CO2 to formic acid using an alumina-supported, iron-based compound — ScienceDaily

Photoreduction of CO2 into transportable fuel like formic acid (HCOOH) is a great way of dealing with CO2‘s rising levels in the atmosphere. To aid in this mission, a research team from Tokyo Tech chose an easily available iron-based mineral and loaded it onto an alumina support to develop a catalyst that can efficiently convert CO2 into HCOOH with ~90% selectivity! The rising CO2 levels in our…

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#Spintronics; petroleum; Energy and Resources; Organic Chemistry; Engineering and Construction; Electronics; Solar Energy; Physics

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dreamdolldeveloper · 3 months

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back to basics

mostly free resources to help you learn the basics that i've gathered for myself so far that i think are cool

everyday

gcfglobal - about the internet, online safety and for kids, life skills like applying for jobs, career planning, resume writing, online learning, today's skills like 3d printing, photoshop, smartphone basics, microsoft office apps, and mac friendly. they have core skills like reading, math, science, language learning - some topics are sparse so hopefully they keep adding things on. great site to start off on learning.

handsonbanking - learn about finances. after highschool, credit, banking, investing, money management, debt, goal setting, loans, cars, small businesses, military, insurance, retirement, etc.

bbc - learning for all ages. primary to adult. arts, history, science, math, reading, english, french, all the way to functional and vocational skills for adults as well, great site!

education.ket - workplace essential skills

general education

mathsgenie - GCSE revision, grade 1-9, math stages 1-14, provides more resources! completely free.

khan academy - pre-k to college, life skills, test prep (sats, mcat, etc), get ready courses, AP, partner courses like NASA, etc. so much more!

aleks - k-12 + higher ed learning program. adapts to each student.

biology4kids - learn biology

cosmos4kids - learn astronomy basics

chem4kids - learn chemistry

physics4kids - learn physics

numbernut - math basics (arithmetic, fractions and decimals, roots and exponents, prealgebra)

education.ket - primary to adult. includes highschool equivalent test prep, the core skills. they have a free resource library and they sell workbooks. they have one on work-life essentials (high demand career sectors + soft skills)

youtube channels

the organic chemistry tutor

khanacademy

crashcourse

tabletclassmath

2minmaths

kevinmathscience

professor leonard

greenemath

mathantics

3blue1brown

literacy

readworks - reading comprehension, build background knowledge, grow your vocabulary, strengthen strategic reading

chompchomp - grammar knowledge

tutors

not the "free resource" part of this post but sometimes we forget we can be tutored especially as an adult. just because we don't have formal education does not mean we can't get 1:1 teaching! please do you research and don't be afraid to try out different tutors. and remember you're not dumb just because someone's teaching style doesn't match up with your learning style.

cambridge coaching - medical school, mba and business, law school, graduate, college academics, high school and college process, middle school and high school admissions

preply - language tutoring. affordable!

revolutionprep - math, science, english, history, computer science (ap, html/css, java, python c++), foreign languages (german, korean, french, italian, spanish, japanese, chinese, esl)

varsity tutors - k-5 subjects, ap, test prep, languages, math, science & engineering, coding, homeschool, college essays, essay editing, etc

chegg - biology, business, engineering/computer science, math, homework help, textbook support, rent and buying books

learn to be - k-12 subjects

for languages

lingq - app. created by steve kaufmann, a polygot (fluent in 20+ languages) an amazing language learning platform that compiles content in 20+ languages like podcasts, graded readers, story times, vlogs, radio, books, the feature to put in your own books! immersion, comprehensible input.

flexiclasses - option to study abroad, resources to learn, mandarin, cantonese, japanese, vietnamese, korean, italian, russian, taiwanese hokkien, shanghainese.

fluentin3months - bootcamp, consultation available, languages: spanish, french, korean, german, chinese, japanese, russian, italian.

fluenz - spanish immersion both online and in person - intensive.

pimsleur - not tutoring** online learning using apps and their method. up to 50 languages, free trial available.

incase time has passed since i last posted this, check on the original post (not the reblogs) to see if i updated link or added new resources. i think i want to add laguage resources at some point too but until then, happy learning!!

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ideas-4-stories · 4 months

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Cross Guild romance AU -

Buggy makes his own explosives, which doesn't sound all that important until you sit back and think of the ramifications and knowledge required for that. Buggy is damn good with chemistry, math, physics, and I bet he was the brain to Shanks's brawn on the Oro Jackson; he'd probably have been all over Crocus whenever he could to learn more about anything and everything.

Crocodile and Mihaw don't really put the two together, given that they see Buggy primarily as an idiot and coward. It's when an epidemic spreads on the island that some odd things click into place-

Buggy has forgone the big costume, is in comfy and sturdy clothes. His face is painted minimally, hair tied into a tight bun, bandana on, and he's working side by side with the medical professionals. He's elbows deep in checking vitals, organizing charts, and even synthesizing medications. More members are sick than not, and they go under a near-quarantine lock down to handle the illness. Between working in the medical tents and taking care of his people, Buggy has also had a hand in organizing for resources to be sent and delivered.

Neither Croc nor Hawk had even considered some of the balls Buggy has gotten rolling. They both have very strong immune systems, so they rarely face or think of illness or sickness as something to prepare for or to account for, but this just exploded one day seemingly without warning, and the clown had a plan in motion by eevening.

It's at this point that they begin to wonder if maybe there's something more to their Chairman than they first thought...

((Bonus points, they catch Buggy coming back from a long shift at the medtent, sent off by the other's to get some rest, so he's just at that sweet spot of tired enough to lose filter. They ask about the medicines, and Buggy goes on a mini infodump about chemicals, hormones, enzymes, antioxidants and antibiotics, mentions that he and a few others already have a few batches baking, and sleepily chuckles about how "the simpler ones seem to work well so far, thank goodness. I was worried... *yawn* that I'd have to dip into my supplies for my testosterone... *falls asleep at the table*.

Croc just becomes the Spiderman meme of "TRANS???" when Buggy wakes up))

I LOVE this is an understatement, this is so good!!! I love Competent!Buggy so much!!! Why can't the clown be a fucking genius while being clown-failure babygirl he is?

Buggy having a plan by evening is because he has so much anxiety, I mean, look at the poor clown! It's always the things that he didn't think of that happens that gets him in trouble. But this, he can do this. I also love the headcanon, that Buggy learn a lot of things from Crocus, so he has this in the bag!

It would be funny if Buggy could be fine in a really bad pandemics, but the flu and whatever the happened near Laugh-Tale is his biggest sickness problems. What am I saying, back to this cool ask!

Buggy being competent because he doesn't want his crew to die or get really ill, not because he needs them to work, but because he wants them healthy and happy. Buggy forgoing the pillow onesie for something better, and not taking that much time on his makeup is so good, that just shows how he priorities his Nakama before himself is so cute! I have a headcanon that Buggy has a least a Field Medic degree or a Nurse one. Mihawk and Crocodile watching at the sidelines is what I see them doing, because like the clown's being competent and they see there's not much they can do in this.

Yes, on Buggy rambling on and on about things he does, I want Buggy to infodump so hard. Like really really hard, Buggy could go on and on about things that interests him for a while.

Buggy is every gender and nothing at all to me, and the spiderman meme with Crocodile is the only one pointing at Buggy while Buggy is confused and sleepy, while Mihawk is just there on the sidelines. Is really funny to me.

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violetsandshrikes · 10 months

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While TikTok is a cesspit of misinformation that’s only worsened by algorithms creating the worst echo chambers you’ve ever seen, there are some professionals and passionate people offering really good resources and advice.

If you are on the platform, I 100% recommend following Chem Thug! He’s a PhD student in synthetic organic chemistry who is really good at addressing a lot of wellness trends that come up, and breaking down why many of them are either not beneficial or actively harmful.

#really enjoy his videos! they’re very informative #katie rambles #chem thug

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probablyasocialecologist · 10 months

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Palestinians have historically cultivated the land, not just with olive trees, but also with figs, apricots, oranges, and dates. Yet, Zionist propaganda, though a concentrated effort to steal Palestinian land, has insisted on “making the desert bloom.” The desert has already been blooming and supporting its Indigenous population, as it has for thousands of years. Since the early twentieth century, Zionists have nevertheless co-opted the language of environmentalism and sustainability as a means of forcing the native Arab population off of the lands they covet. The Jewish National Fund (JNF), a self-described Zionist organization, has an explicit mission: to acquire land throughout Palestinian territories and plant trees—with “proud Jewish identity.” The JNF claims to have planted 240 million trees over 227,000 acres. This tree-planting crusade is detrimental to the land. Pine trees that constitute the colonist’s imaginary of a forest in Europe replace the native plant species and change the soil’s chemistry, such that agricultural crops cannot thrive. This further displaces Palestinians, as well as the nomadic Bedouin peoples, who rely on the land for grazing their cattle. Settlers want to extract from the “blooming desert.” In contrast, the Indigenous approach to land is one of mutual respect and nourishment: the land sustains life and culture, a culture that settler-colonialism wants to erase. To achieve this end, the Zionist occupation has used a variety of tactics to disrupt the Palestinian economy, including controlling water resources so that groves cannot be irrigated as needed, which is especially important now given the effects of the climate crisis. Additionally, the Zionists instituted a permit system that has prevented olive farmers from accessing their trees for all but a handful of days per year. This has made it difficult, if not impossible, to do necessary maintenance like pruning and weeding, greatly impacting the quality of the harvest. Most egregiously, the Zionists erected walls separating farmers from their groves, slicing up plots of land that have been in the same family for generations. Such measures have forced olive farmers to rely on olives of subpar quality. Because of the limited days that farmers are given to access their trees, they might be forced to pick the olives before peak ripeness, affecting the quality of the olive oil produced and therefore the prices that the oil will fetch. A 1994 New York Times article summarized the struggle succinctly: “The Palestinians planted tiny olive trees; the Israeli soldiers dug them up. The Palestinians lay down in the road to block a bulldozer; the Israelis carted them off to police vans.”

#israel #palestine #zionism #olive trees #greenwashing

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spacejax · 5 months

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Resources that have helped me in my classes!

(will add to this list as I find/remember more)

Classes I've used these in so far:

Honors Mechanics

Honors Thermodynamics & Optics

Relativity & Quantum Mechanics

Calculus I, II, III

Differential Equations

Introduction to Astronomy

Fundamentals of Astronomy

- - - - Youtube Channels - - - -

Physics

Michel van Biezen - oh my god I love him. I think he uses Sears and Zemansky's University Physics for example problems. His channel has 10k videos (!!!) and is very well-organized. He also lectures on math (from 5th grade to linear algebra), chem & organic chemistry, and astronomy.

Calculus

The Organic Chemistry Tutor - I mostly watch his videos on Calculus I-III and Differential Equations, but he also covers physics and chemistry.

Nancypi - Precalculus, Calculus I, and some of Calculus II. I barely showed up to calc lectures my first semester so she was a great help. also i have a crush on her

Michel van Biezen - I usually don't watch his math videos because his notation and techniques are different from what my prof makes us use

Astronomy

Urknall, Weltall, und das Leben - my literal dream channel. perfect levels of dryness, and videos are usually at least 45 minutes long. It's entirely in German though lmao

Michel van Biezen - covers important topics in introductory astronomy, and also does example problems (although I think they're all algebra-based)

- - - - Textbooks - - - -

Introduction to Cosmology - Barbara Ryden

Foundations of Astrophysics - Ryden & Peterson

University Physics - Sears and Zemansky

Calculus - James Stewart

Modern Physics - Kenneth Krane

#astronomy #physics #mechanics #quantum physics #calculus #differential equations #academia #university #studyblr #undergraduate #astrophysics #college #student #undergrad #advice #studying #nasa #vector calculus #resource

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thespoonisvictory · 4 months

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it's just so fucking fun to listen to brennan talk about magic bc it FEELS like a lecture about organic chemistry or thermodynamics. there are things that are universally true and people have spent countless hours and resources proving. but why do they happen? girl we don't quite know yet.

magic is a science that wizards are building an understanding of, but early wizards did a lot of handwave-y assumptions and "yeah we're just going to assume that works and will continue to work to keep building on it so we can cast fireball and teleport." and now wizards like soft and stone were going wait hold on wait you skipped some steps. and that's what modern chemistry research feels like to a tee

#wbn #worlds beyond number #also the way it talks about the group research with soft and stone is real as HELL #soft making a wild statement/assumption casually and stone being like you can't DO that what do u MEAN

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er-cryptid · 8 months

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Chemistry Notes (December 2021)

Acid-Base Equilibrium Side Ex 1

Acid-Base Equilibrium Side Ex 2

Arrhenius vs Bronsted-Lowry Acids and Bases

Calculating [OH-] with Kw Ex 1

Change in Entropy for a Change of State Ex 1

Classification of Amines

Complex Lewis Structure Formal Charges Ex 3

Constitutional Isomers Ex 1

Finding Percent by Mass Ex 2

Identifying Functional Groups Ex 2

Intermolecular Force of Water

Moles of Product Ex 1

Naming Cycloalkanes Ex 1

Naming Cycloalkanes Ex 9

Nonmetal Listing Order

Order of a Reaction Ex 2

pH from [OH-] Ex 1

Products of an Acid-Base Reaction Ex 1

R,S Naming of Fischer Projection Ex 1

Spin Quantum Number

Stereoisomers with Multiple Chiral Centers Ex 1

Stronger Acidity and Electronegativity Ex 1

Vanadium (III) Oxide

Weaker Acidity and Electronegativity Ex 1

Weaker Acidity and Electronegativity Ex 2

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chemblrish · 3 months

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How I survived pchem

So, the time has come: you have to take physical chemistry in uni. Hell's favorite, the most terrifying of nightmares, the source of emotional damage for hundreds of science students worldwide... Or so they tell you. There's no denying pchem is no field of flowers, but I managed to pass the numerical part with a 4/5 and the theoretical part with a 5/5, so let me just say - pchem is definitely passable. Here's some of my advice.

Go to class

Seriously. I know all of studyblr always tells you to go to class, but with pchem I mean it more than ever. Don't skip lectures. Go see the way your professor links the concepts and explains the necessary math. Please. It'll save you so much hassle!

Abuse office hours

And don't hesitate to ask questions in class. Lab partner and I would stay after lectures to ask our professor extra questions or go see him in his office several times during the semester and it always paid off. They won't be mad! They're here for you! Chances are, they'll be happy a student is invested in their subject.

Be consistent

I cannot stress this enough: consistency is everything. Do not leave studying for a test/exam until the last minute. If you can cram pchem at all, that's impressive. But I don't think you can cram it well. Go over your lecture notes the same day - with a textbook, so that you can fill in the gaps in your understanding of the given topic - it does wonders for comprehension and retention.

Do practice problems

And if you get mandatory exercise sets you need to complete for class, try to do more than that. Looking at somebody's solution and thinking "yeah I see what's going on here" isn't enough. If you aren't able to solve similar exercises by yourself, from scratch, you don't actually understand the topic.

Make friends with a good textbook

Ideally, your professor should be the one to recommend textbooks and exercise books. If they don't, ask! Personally, aside from some Polish textbooks, I read Atkins religiously. The textbook is great. The exercise book is a lifesaver - the answer key has complete, step-by-step solutions *cries in joy*

Understand the material thoroughly

Don't just skim through the chapters - see how every new concept is "stacked" on top of the previous ones and how it complements them (why do we need the second law of thermodynamics? Why is the first one not enough? Why is entropy defined as heat over temperature and not work over temperature if both heat and work are a way to transfer energy?). Similarly, don't just memorize formulas!! See where they come from. Derive them yourself, identify the steps that are unclear and try to understand what happens there.

Less fear, more curiosity

All right, pchem is hard, pchem is demanding, sure. But pchem is also fun. Pchem is fascinating, pchem is beautiful! The intersection of sciences! The chemistry you're already familiar with translated into the universal language of mathematics! Nature explained at a molecular level! Look. Everybody told me pchem would traumatize me, so I decided to prove them all wrong. I tried to approach it with as much enthusiasm as I could and it worked! Yes, I absolutely had to work my butt off in this class, but I enjoyed it! Please, try to do the same.

Additional resources

The organic chemistry tutor - physics (yt)

Professor Derricotte (yt)

Physical chemistry (yt)

The chemistry library - physical and theoretical chemistry

Have fun and good luck!! 🍀💖

#obviously these aren't universal #but i think most of them can be helpful to a lot of people #mine #studyblr #chemblr #stemblr #sciblr #chemistry

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materialsscienceandengineering · 1 month

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hi, do you have any resource recommendations for laypeople who want to grasp the most important essentials/fundamentals of material science? any help will be very appreciated!

Great question! Unfortunately, our definitions of 'laypeople' and 'fundamentals' may vary, so if this list doesn't have what you're looking for just let me know and I'll give it another shot.

Let's start with some... let's say 'unpublished/unofficial' resources. First - this blog. Not to toot my own horn, but I've got a good collection of original posts (try the tag MyMSEPost, or this year's newest variety 2024Daily) that I hope are fairly readable to the general public - and come with links and further reading resources for each topic. However, these posts are not comprehensive. I don't think I've ever talked about what is a crystal structure, for example. [Also, I've been doing this for, wow, almost 10 years now, so... that's a fair number of posts...] I also, one upon a time, made some MSE Masterpost posts, though those are probably pretty outdated by now and I can't guarantee the links all work.

Another resource is msestudent.com. They don't have an about page, but it seems to be a more official (i.e., non-Tumblr) blog about the fundamentals. That being said, while they do have a search system, they don't seem to have a table of contents. Both of these resources will help you learn some fundamentals, but they won't tell you what the fundamentals are if you don't already know them.

Other science Tumblr blogs have come and gone over the years, but @materiallugy seems to be currently posting, and @matmake was not too long ago. Both have separate websites with resources, though I'm not sure how comprehensive.

Now for undergraduate level resources that are comprehensive. These are introductory, but I suppose they might presuppose a high-school level education (basic chemistry and physics, probably):

Online classes, such as MIT OpenCourseware, or Coursera (two examples of many). Some of these kinds of resources are free, some aren't. MIT, in particular, isn't so much a class you take online as it is the resources (and sometimes videos) of their classes.

Textbooks. I used Materials Science and Engineering: An Introduction (Callister and Rethwisch), which I think is pretty common and a well respected book. Obviously it costs money, but I think it's safe to say you could go back a couple editions and save some money.

Less comprehensive but still official is the University of Cambridge's Teaching and Learning Packages. Again, this won't tell you what are the fundamentals if you don't know already know. For example, there are 78 at the moment - I wouldn't say the additive manufacturing TLP is essential to MSE, but atomic scale structure of materials is.

Additional resources:

Specifically corrosion

Online, virtual, general chemistry textbook

Online, virtual, organic chemistry textbook

Someone else's compiled list of links and resources, which may be outdated

YouTube videos from a professor of MSE (side note: I have not watched these and cannot verify their accuracy or usefulness, but the guy does teach this stuff for a living...)

Hope this helps, and everyone feel free to chime in if you have any resources of your own you use!

#Materials Science #Science #Student #Anonymous #Replies

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religion-is-a-mental-illness · 11 months

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By: Dyani Lewis

Published: May 31, 2023

In India, children under 16 returning to school this month at the start of the school year will no longer be taught about evolution, the periodic table of elements or sources of energy.

The news that evolution would be cut from the curriculum for students aged 15–16 was widely reported last month, when thousands of people signed a petition in protest. But official guidance has revealed that a chapter on the periodic table will be cut, too, along with other foundational topics such as sources of energy and environmental sustainability. Younger learners will no longer be taught certain pollution- and climate-related topics, and there are cuts to biology, chemistry, geography, mathematics and physics subjects for older school students.

Overall, the changes affect some 134 million 11–18-year-olds in India’s schools. The extent of what has changed became clearer last month when the National Council of Educational Research and Training (NCERT) — the public body that develops the Indian school curriculum and textbooks — released textbooks for the new academic year that started in May.

Researchers, including those who study science education, are shocked. “Anybody who’s trying to teach biology without dealing with evolution is not teaching biology as we currently understand it,” says Jonathan Osborne, a science-education researcher at Stanford University in California. “It’s that fundamental to biology.” The periodic table explains how life’s building blocks combine to generate substances with vastly different properties, he adds, and “is one of the great intellectual achievements of chemists”.

Mythili Ramchand, a science-teacher trainer at the Tata Institute of Social Sciences in Mumbai, India, says that “everything related to water, air pollution, resource management has been removed. “I don’t see how conservation of water, and air [pollution], is not relevant for us. It’s all the more so currently,” she adds. A chapter on different sources of energy — from fossil fuels to renewables — has also been removed. “That’s a bit strange, quite honestly, given the relevance in today’s world,” says Osborne.

More than 4,500 scientists, teachers and science communicators have signed an appeal organized by Breakthrough Science Society, a campaign group based in Kolkata, India, to reinstate the axed content on evolution.

NCERT has not responded to the appeal. And although it relied on expert committees to oversee the changes, it has not yet engaged with parents and teachers to explain its rationale for making them. NCERT also did not reply to Nature’s request for comment.

Chapters closed

A chapter on the periodic table of elements has been removed from the syllabus for class-10 students, who are typically 15–16 years old. Whole chapters on sources of energy and the sustainable management of natural resources have also been removed.

A small section on Michael Faraday’s contributions to the understanding of electricity and magnetism in the nineteenth century has also been stripped from the class-10 syllabus. In non-science content, chapters on democracy and diversity; political parties; and challenges to democracy have been scrapped. And a chapter on the industrial revolution has been removed for older students.

In explaining its changes, NCERT states on its website that it considered whether content overlapped with similar content covered elsewhere, the difficulty of the content, and whether the content was irrelevant. It also aims to provide opportunities for experiential learning and creativity.

NCERT announced the cuts last year, saying that they would ease pressures on students studying online during the COVID-19 pandemic. Amitabh Joshi, an evolutionary biologist at Jawaharlal Nehru Centre for Advanced Scientific Research in Bengaluru, India, says that science teachers and researchers expected that the content would be reinstated once students returned to classrooms. Instead, the NCERT shocked everyone by printing textbooks for the new academic year with a statement that the changes will remain for the next two academic years, in line with India’s revised education policy approved by government in July 2020.

“The idea [behind the new policy] is that you make students ask questions,” says Anindita Bhadra, an evolutionary biologist at the Indian Institute of Science Education and Research in Kolkata. But she says that removing fundamental concepts is likely to stifle curiosity, rather than encourage it. “The way this is being done, by saying ‘drop content and teach less’”, she says, “that’s not the way you do it”.

Evolution axed

Science educators are particularly concerned about the removal of evolution. A chapter on diversity in living organisms and one called ‘Why do we fall ill’ has been removed from the syllabus for class-9 students, who are typically 14–15 years old. Darwin’s contributions to evolution, how fossils form and human evolution have all been removed from the chapter on heredity and evolution for class-10 pupils. That chapter is now called just ‘Heredity’. Evolution, says Joshi, is essential to understanding human diversity and “our place in the world”.

In India, class 10 is the last year in which science is taught to every student. Only students who elect to study biology in the final two years of education (before university) will learn about the topic.

Joshi says that the curriculum revision process has lacked transparency. But in the case of evolution, “more religious groups in India are beginning to take anti-evolution stances”, he says. Some members of the public also think that evolution lacks relevance outside academic institutions.

Aditya Mukherjee, a historian at Jawaharlal Nehru University in New Dehli, says that changes to the curriculum are being driven by Rashtriya Swayamsevak Sangh (RSS), a mass-membership volunteer organization that has close ties to India’s governing Bharatiya Janata Party. The RSS feels that Hinduism is under threat from India’s other religions and cultures.

“There is a movement away from rational thinking, against the enlightenment and Western ideas” in India, adds Sucheta Mahajan, a historian at Jawaharlal Nehru University who collaborates with Mukherjee on studies of RSS influence on school texts. Evolution conflicts with creation stories, adds Mukherjee. History is the main target, but “science is one of the victims”, she adds.

Well, at least it'll put them on par with the anti-science and biology-denial of US classrooms. China no longer has anything to worry about.

#India #hinduism #islam #science denial #evolution #evolution denial #science #anti science #biology denial #math #mathematics #physics #religion #religion is ignorance #religious stupidity #periodic table #periodic table of elements #religion is a mental illness

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shantalangel · 1 year

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An unexpected guess came to me:

The blue healing liquid that Nicholas was using is clearly something made of Plants (sure people on Gunsmoke had been generatinh all chemistry for medicine in Plants, but this thing is not an imitation of earthly resources, it's something biological - Plants' blood, maybe). Plants are able to generate huge amounts of biomass in seconds, they grow limbs, organs (in Trigun Maximum manga); and the blue liquid heals any wounds at the same speed. Wolfwood in new anime opened a red-hot valve with his bare hands, which people could not even approach. Although there were no clarifications about the following in the manga (it simply said that blue liquid affects age), in the new anime, Wolfwood from the age of ten grew to 18 or more in a few months. Vash and Nai from birth to human ten years grew up in a year. I don't think these are all coincidences. This blue thing in new anime even glows the same shade as Plants in new design.

UPDATE: I WAS RIGHT!! Read under the spoiler below.

Yes, they experimented trying to upgrade humans for better survival on this planet - so that they don't need food and water, but it didn't work. Then they began to modernize embryos and grow hybrids of people and Plants. Nicholas from the first category, a girl with multi-colored eyes - Elendira from this version - who appeared in the first series - from the second.

So we now have an interesting set of "races": humans, Plants, mutants (Nicholas, Livio, Rollo) and hybrids (Elendira and a few more babies in capsules). I am now burning with curiosity to know who Legato with his telekinetic abilities is.

#Trigun #Trigun stampede #Trigun Maximum #nicholas d wolfwood #nicholas wolfwood #wolfwood #trigun 2023 #trigun anime #trigun analysis

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spacetimewithstuartgary · 1 month

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Saturn's moon Enceladus top target for ESA

A fresh, icy crust hides a deep, enigmatic ocean. Plumes of water burst through cracks in the ice, shooting into space. An intrepid lander collects samples and analyzes them for hints of life.

https://ca8ab30162e5a7c1676849426e588102.safeframe.googlesyndication.com/safeframe/1-0-40/html/container.html ESA has started to turn this scene into a reality, devising a mission to investigate an ocean world around either Jupiter or Saturn. But which moon should we choose? What should the mission do exactly? A team of expert scientists has delivered their findings.

The mission would follow Juice, LISA and NewAthena as the first "large-class" mission of Voyage 2050, ESA's long-term plan for space science activities. Its overarching theme—"moons of the giant solar system planets"—was chosen back in 2021. To translate this theme into more concrete mission concepts, ESA selected a committee of top planetary scientists to pool their knowledge and expertise.

Their task? To analyze the scientific merits of visiting various moons of Jupiter or Saturn, and help ESA map roads towards innovative technical solutions that would make such a mission possible.

Scientific priorities were set out as part of the Voyage 2050 recommendations: The mission should focus on the habitability of an ocean world by investigating the links between its interior and its surroundings, as well as searching for signs of past or present life, and seeking to identify life-enabling chemistry at the surface.

"The mission concepts that we have recommended would provide tremendous scientific return, driving forward our knowledge, and would be fundamental for the successful detection of biosignatures on icy moons," says Dr. Zita Martins, astrobiologist at Instituto Superior Técnico, who chaired the team of planetary scientists.

"I am very happy to have been part of this process, seeing first-hand the early steps that will potentially lead to the investigation of the moons of the giant planets by ESA. The search for habitable conditions and for signatures of life in the solar system is challenging from a science and technology point of view, but very exciting!"

Ambitious but achievable. Always.

Of course, big dreams must always be kept within the bounds of what is technically feasible and financially affordable. As Dr. Martin's team focused on the science, teams of engineers within ESA's Concurrent Design Facility (CDF) analyzed what kind of mission would be realistic considering the technologies we expect to be developed within the next two decades.

"We commissioned three CDF studies focused on the most promising moons: Jupiter's Europa and Saturn's Enceladus and Titan," elaborates Dr. Frederic Safa, head of ESA's Future Missions Department. "The team of scientists worked closely with the CDF engineers on the objectives of each study. The outcomes helped pin down what can be done with the resources that we will have in the 2040s."

Aiming for transformational science, considering the characteristics of each moon and future planned missions to Jupiter and Saturn's ocean worlds, the scientists identified Saturn's moon Enceladus as the most compelling target, followed by Saturn's moon Titan and then Jupiter's moon Europa.

No space agency has ever landed on little Enceladus. And yet it has enormous potential for new science, particularly in the realm of habitability. It is generally accepted that there are three conditions for a 'habitable environment' to potentially support life as we know it: the presence of liquid water, a source of energy, and a specific set of chemical elements.

Enceladus checks all three boxes. The plumes that spew through its icy crust are rich in organic compounds, some of which are key for life. The ocean also seems to hold a powerful source of chemical energy that could fuel living organisms.

The impact of such a mission could be enormous It would offer Europe—once more—a unique front seat in solar system science. "An investigation into signs of past or present life around Saturn has never been achieved before. It would guarantee ESA leadership in planetary science for decades to come," says ESA Director of Science, Prof. Carole Mundell.

Standing on the shoulders of giants

Building upon ESA's Jupiter Icy Moons Explorer (Juice) and the NASA/ESA/ASI Cassini-Huygens mission to visit Saturn and land on Titan, this new mission would carry next-generation instrumentation capable of revealing unimaginable secrets of an ocean world such as Enceladus. ESA could launch such a mission in the early 2040s with Ariane 6, arriving at its destination around a decade later. In the style of Juice and Cassini-Huygens, the mission—if targeted towards Enceladus or Titan—could perform a fantastic tour in the Saturn system, encompassing flybys of other puzzling moons, before a grand-finale close-up investigation of the chosen target.

To significantly advance European ambitions in planetary science, the team judged that the new mission must collect a sample of the ocean world, either using a lander or by flying close to the surface to sweep up material ejected by plumes. A mission to Enceladus would touch down at the moon's thinly crusted south pole to collect ejected ocean material, whereas a mission to Titan should focus on lake sediments. In either case, an onboard laboratory equipped with miniaturized and highly sensitive instruments would unravel the biochemical secrets of the collected material.

Like Juice and Cassini-Huygens, our mission to the "moons of the giant solar system planets" will engage Europe's foremost engineering and industrial capabilities to cope with enormous challenges, including limited solar energy, wildly varying temperatures and communication over huge distances. ESA is already overcoming similar challenges with Juice.

The new mission will boost European competences in many scientific and technological fields, including in-orbit assembly, operating in extreme environments, landing technologies, and novel scientific instrumentation. All these revolutionary technologies will have a wide range of applications, well beyond ESA's space science program.

TOP IMAGE....A global infrared mosaic of Saturn's moon Enceladus created using a complete dataset from the Cassini spacecraft has revealed new detail on the moon's surface. Credit: NASA/JPL-Caltech/University of Arizona/LPG/CNRS/University of Nantes/Space Science Institute

LOWER IMAGE....How water may be heated inside Saturn’s moon Enceladus. Credit: NASA/JPL-Caltech/Space Science Institute; interior: LPG-CNRS/U. Nantes/U. Angers. Graphic composition: ESA

#science #space #astronomy #physics #news #esa #astrophysics #SATURN #enceladus

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