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#mathematical constants
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The first recorded use of π as a mathematical symbol comes from the Welsh mathematician William Jones in a 1706 work called Synopsis Palmariorum Matheseos in which he abbreviated the Greek περιφέρεια to its first letter: π.
He wrote: “3.14159 andc. = π”
He explained that he chose this symbol because it was the initial letter of the word ‘Periphery’ or ‘Circumference.'
However, the use of π as a standard notation for Pi was popularized by another mathematician, Leonhard Euler, who adopted it in 1737.
Euler was one of the most influential and prolific mathematicians of all time.
He used π extensively in his work on calculus, number theory, geometry, and physics.
He wrote:
“Let π denote the ratio of the diameter of a circle to its circumference."
Since then, π has become a universal symbol for pi and one of the most recognizable and celebrated mathematical constants in the world.
William Jones, FRS (1675 – 1 July 1749) was a Welsh mathematician, most noted for his use of the symbol π (the Greek letter Pi) to represent the ratio of the circumference of a circle to its diameter.
He was a close friend of Sir Isaac Newton and Sir Edmund Halley.
In November 1711, he became a Fellow of the Royal Society and later its vice-president.
Leonhard Euler (15 April 1707 – 18 September 1783) was a Swiss mathematician, physicist, astronomer, geographer, logician, and engineer who founded the studies of graph theory and topology.
He made pioneering and influential discoveries in many other branches of mathematics, such as analytic number theory, complex analysis, and infinitesimal calculus.
He introduced much of modern mathematical terminology and notation, including the notion of a mathematical function.
He is also known for his work in mechanics, fluid dynamics, optics, astronomy, and music theory.
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ramenwithbroccoli · 5 months
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not to be controversial on main, but i really do feel like way more people would enjoy maths if someone properly explained it to them & they didn't have a hanging threat of failing an exam above their heads
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sablegear0 · 5 months
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Another chapter of "Asymptotic" is up! Enjoy your (mildly angsty) teen satosugu romance. In this chapter: the lads go camping, sort of.
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It really fucks with me that the area under the curve y=x^-1 is undefined between [1,infinity].
Like look at the curve
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The area gets smaller and smaller
But it still tends to infinity?
This is mostly a gripe with the harmonic series because what the actual fuck
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You’re telling me that the harmonic series is equal to ln(n) with just some random constant added to it? What the fuck? When I found out that was such a cop out. Like c’mon really?
Euler’s constant is my least favourite constant solely because this offends me
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bdknopp · 3 months
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POWER OF PI…
“Pi is not just a collection of random digits. Pi is a journey; an experience; unless you try to see the natural poetry that exists in Pi, you will find it very difficult to learn.” ― David Chudnovsky David Chudnovsky, an acclaimed mathematician and co-discoverer of the Chudnovsky algorithm, shares his insight on the beauty and depth of pi, a fundamental mathematical constant. He encourages us…
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sagesilentfire · 2 years
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Physicists Discovers Difference In Hubble Constant Actually Error in Entering Numbers Into a Calculator
"My bad," says the scientist responsible.
"Oh, that makes sense," said every single scientist and astronomy geek ever, before burning them alive.
Reports say general public confused, wondering what the Hubble constant is and why it's important.
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acoustiloid · 1 month
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transcribing the digits of mathematical/physical constants into music - #01: pi
(3.1415926535897932384626433...)
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buddydacote · 3 months
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I may have brought up before that I got hit in the head and was worried about how it may have affected me. Last month I started seeing an occupational therapist and have been given a few things to work on at home to continue improving. This bag is full of foam shapes I have to grab with tweezers.
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asseroy · 10 months
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7 Reasons why 7 is FASCINATING!
Discover the captivating allure of the digit 7 with these intriguing facts! 🌌
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tenth-sentence · 1 year
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The precise pattern produced depends on the 'constants of nature' of the system, such as the speeds at which the chemicals diffuse, and on what a mathematician would call the boundary conditions: the size and geometry of the grassy field in our analogy.
"Human Universe" - Professor Brian Cox and Andrew Cohen
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toge-bi · 1 year
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guy who gets unreasonably upset when people call kirigami origami
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turito924 · 2 years
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Arithmetic sequence or arithmetic progression is defined as a sequence of integers where the difference between any two numbers is always constant.
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snidbert · 11 months
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this beautiful equation contains the six most important constants in mathematics
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sablegear0 · 4 months
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The last chapter of "Asymptotic" is up! It's time for the obligatory (non-graphic) spicy content but c'mon, the boys deserve a break!
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miss-fanfictions · 1 day
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Sundays at the Library | Spencer Reid x Reader
Pairing] Spencer Reader x glasses wearing! shy! librarian! fem!Reader
Synopsis] Spencer talks to the sweet librarian at his new library and slowly Sundays become his favorite day of the week.
Warnings] Cursing, creepy guy, misunderstandings (but its cute I promise), written from Spencer's POV
Word Count] 8.9k
Author's Note] This is my first fic here! I'm planning on doing a few more parts to this, so this is only the beginning 🙃
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The first time Spencer saw you, the encounter wasn’t anything special. 
If he wasn’t working, he was reading, and because he can read 20,000 thousand words per minute, he needed new books often. Not even his FBI salary could afford the amount of books he consumed in a month and his cozy apartment certainly couldn’t contain them all. Already his bookcases were spilling out onto nearby surfaces. So to quench his constant need for new books, Spencer borrowed books from the library. However, since the one near his apartment closed just a week ago, he had to find a new one. That led him to drive to the library ten minutes away. 
It was larger than the one down the street from his apartment—it had a full three floors. Beyond the double doors, he followed two velvet rope barriers onto the main floor of the library, wandering past a grand front desk to his left to where the room divided into two sections and the barriers ended. In the left section, beside the desk, there were a couple computers set up, as well as two printers and a side wall dedicated to DVDs. In the other section there were tables and chairs set up for quiet studying, as well as more comfortable lounges for reading. Behind those two sections started the book shelves, nearly ceiling high and organized via genre and then further alphabetized. When he ascended the staircase at the back of the main floor, he found the upper levels were fully dedicated to rows of shelving containing books, interspersed with a few tables and lounges for reading. 
 He spent approximately 45 minutes getting the layout of the library, as large as it was, and finding the books he wanted to read. Of course, he got a range of books. Two books on psychology, a mathematical textbook, and another two books based in the sciences. A bit of light reading, really, just to occupy his time at home during a busy caseload week. 
He balanced the heavy books awkwardly in his arms as he made his way to the front desk, practically dropping them onto the counter. His lips twisted up in embarrassment, glancing around to see if anyone was disturbed by the loud clatter. When his eyes turned back to the desk, they met the bespeckled ones of you, the librarian, seated behind the counter. They were wide behind the frames, doe-like and startled by the noise. He winced and stuttered out an apology.
Too often he embarrassed himself due to his clumsiness. Over the years, Spencer got a lot better at the shooting range, but he still couldn’t run a mile without tripping a few times, or be able to participate in sports, and he didn’t even want to think about his driving. JJ often compared the experience of being in his passenger seat to riding shotgun with her senile grandmother. No matter what he did, the awkwardness crept in and all he could do was apologize. He didn’t mean to startle the nice librarian who he would seeing every week for the foreseeable future. 
“It’s fine,” your voice was a gentle whisper, perfect for the quiet of the library. You closed the book on your lap and placed it out of sight under the counter, standing up to help him. That’s when he could take you in completely, with your long flowy skirt and oversized sweater. Perhaps a shy attempt to battle the chill running through the library, or maybe a purposeful effort to hide yourself away from prying eyes. He could tell—despite your attire—that you were his age or maybe a little younger. You lacked the wrinkles, grays, and even the weathered dullness associated with age. Your hair was done up messily, effortlessly, and his eyes tracked your chewed up fingernails as you tucked a few strands behind your ears, out of the way of your eyesight. 
He thought you were plain and shy. The soft pastels and neutrals that colored your clothes and the fact the garments covered you so entirely, made you blend into the background. Had he not needed to speak to you directly, he might not have noticed you tucked behind the desk, folded up in your chair with your nose deep in a book. 
“Can I check these out for you?” You asked him, and he almost missed it due to both his staring and your airy cadence. 
“Oh, uh, yes,” he said, then quickly added. “And a library card, please. I’m new to this library.”
“I’ll just need an ID then,” you held out your hand while he rummaged through his wallet for his state ID, and when he placed it into your palm he was careful not to touch your hand. It was less about you as a person as it was his disdain for germs. 
You went about clicking and typing at the computer to the side of the desk, face plain as if whatever you were doing you had done a thousand times. Your nimble fingers only stuttered when you glanced back at him, catching his eyes as he watched you before he darted them away from your face, caught. Quickly, you grabbed the mouse, clicking only three more times before handing back his ID. He was careful not to touch your hand or meet your eyes as he took it back. 
He didn’t mean to make you uncomfortable with his staring, he had a habit of it, always trying to profile. But you were just a meek librarian, and there was no reason to take note of your behavior. You went about printing out a physical copy of his new library card, and he opened one of his books to occupy himself as you did so. 
When you turned back to him, you scanned a plastic card before offering it to him with a small smile. “Thank you,” he mumbled as you went about scanning the books on the counter with the same barcode reader. You were on the fourth book when your brows creased and you looked back up at him. 
“Are you studying?” You asked, the words sudden as if you couldn’t hold the thought off your lips. 
“No, this is just some light reading,” he answered politely, because it was. Though he forgot that was maybe not normal, because you giggled at his reply. 
The sound brought his eyes to your lips, the way they parted to let the breathy noise out. It was a unique giggle, though he supposed everyone’s is, but something about it suited you so completely. It was soft, and when he glanced around the library to see that no one else had heard it, he thought it was also just for him. There was no taunting, just joy that you emitted in the most delicate of sounds. If only he could understand what he did to extract it from you. 
“Right,” You said jokingly, and then he thought maybe you didn’t believe him, but he didn’t get a chance to assure you he was being truthful before you finished checking out the books. “Here you go, have a nice day, Spencer.”
He hesitated, thrown off by your use of his name, but cleared his throat and collected his books nonetheless. He thanked you and mumbled a brief goodbye as he did so, not looking back as he rushed out of the library. When he got to his car, he used a pack of disinfectant wipes on the books and set them up in his passenger seat, thoughts of the little librarian withering away to the casework waiting for him at work tomorrow.
He finished the books quickly, in only two days actually, but thankfully most of his time was taken up by his work. In his remaining free hours, he resorted to rereading a few books on his shelves. On Sunday, he collected his library books and drove the ten minutes back to his new library, exactly one week since his last visit. 
The inside was chilly and smelled like old paper and leather. There weren't many people he could see on the main floor, a few of what looked like college students spread out studying and some preteens huddled on the computers, whispering snarks and giggles. He walked up to the front desk, following the rug and the velvet rope barriers that led right to it from the entrance. This time he didn’t pass by the desk, but stopped at it to place down his books—quietly.
Your familiar framed eyes looked up at him, just as doe-like as surprise crossed them right before a smile took hold. Again, you closed the book in your lap, though this time Spencer caught a glimpse of its orange and yellow cover before you hid it from sight. He couldn’t make out the title. “Back so soon?”
It had been exactly a week since he’d seen you, and though he had not thought of you much since then, Spencer was incapable of forgetting a face. You looked just as you did last week—messy updo, baggy clothes, bare face. It seemed that was your natural state, or at least what you wore to work, but what Spencer wore to work was pretty much his normal wardrobe and he worked in the FBI, not a library.
“Yes, I need to return these books,” he told you, returning your smile with a quirk of his lips and placing his library card on top of the stack of books. 
When your eyes roamed back down from his to the five books, your brows furrowed. “Give up on studying then?” You asked, scanning the books back into the system. 
For a moment, Spencer was confused, then he recalled every word of your last interaction, and realized you still thought he checked the books out to study them, likely for some graduate classes, given his age. “No, I wasn’t studying them. I just needed a few books for casual reading after work.”
You paused once you turned to the computer, looking at him down your glasses. “Casual reading?” Your eyes went back between the thick books and his face, a smirk of disbelief growing. “You read all these books in a week?”
“Yes.” He shrugged. 
“For fun?” You had a skeptical eyebrow quirked.
“That’s what casual reading normally implies.” Spencer furrowed his brows at your line of questioning. Maybe most people wouldn’t read such topics simply for fun, but why would he lie about that? 
At that, you giggled again, a bird’s song, and resumed clicking at your computer. Your gentle laugh tickled something deep in his chest. Again, there was no malice or ill intent to it, not any that he could see behind your genuine eyes and smile. You simply thought he was a funny guy, and no one ever thought that of Spencer. He was too awkward, or too serious, or even too annoying to be fun. 
You took the stack of books in your arms, the pile reaching right up to your chin, and walked them to a cart behind you. When you turned back, you were still smiling sweetly at him. “Your light reading has been checked back in.” You slid his library card across the counter.
He plucked the card back off it with a thanks, tucking it into the pocket of his sweater vest. For a moment, he debated telling you about his PhDs, his eidetic memory, and maybe even his genius IQ because Spencer always felt the need to prove himself—to state facts—because he wasn’t the funny guy. He was very serious and all the things he was telling you weren’t just silly jokes. Then he worried he might wipe the smile right off your face, and he couldn’t let himself do that. So instead he gave you a stiff nod and continued into the library.
. . . Only to spin right back around, fist awkwardly pressed against his lips. “Oh, also, what is the maximum amount of books I could have checked out at once?”
You had just cracked the spine of your book again when you looked back up at him, a swirling look of confusion on your face. “Ten books, but you don’t have any out so I wouldn’t worry about it.” 
Spencer gave another nod, spinning back around on his heels and taking himself right up to the second floor of the library. He spent approximately 37 minutes collecting books from around the library, setting them aside at tables as he weaved through the rows of bookcases for the different genres. A wealth of knowledge in all areas was useful for his job, and also just for him personally. He found great pride in knowing many things, as annoying as others might find his incessant info-dumping. 
When he finished, he took a stack of books from the table and carried them down from the second floor, slowly stepping down the stairs and craning his neck around the stack to watch his steps. He could be uncoordinated at his best, so there was no need to tempt fate into sending him tumbling down the staircase by not paying attention. 
After successfully making it down, he took long strides to the main desk and set the stack down on the counter. Of course, you looked up at him again, however skipped surprise and jumped into an inviting smile. You closed your book and stood up, taking in the books he set in front of you. “Another five to check out then?”
“No, actually, I’ll be right back.” He turned away so fast he almost missed the way your smile faded and you leaned over the counter to watch him ascending the stairs again, spindly legs taking them two at a time.
He grabbed hold of the second tower of books, nearly dropping the top one in his haste to get back to you. After that he continued to take the stairs carefully even as he felt your eyes on him. Maybe especially because he felt your eyes on him, because if you watched him fall down the stairs he’d have to drive an additional ten minutes away to find another new library, because he certainly wouldn’t be able to look you in the eyes anymore. 
Beside the first stack on the counter, he set the second, then placed his library card between them. “This is it, I promise.”
Again, you glanced between him and the books, eyes bugging behind their glass shelter. After a moment or so, as if you were making sure he was serious (he was), you began scanning his card and the books. Despite the larger quantity of books, you were slower as you ran the barcodes on the back, taking the time to read the titles and authors. 
“Are you a graduate student?” You asked, looking at a book on human genealogy. 
Spencer twiddled his thumbs. “No, I’m finished with school for now, but I might go back for another PhD in the future when I have more time,” he answered honestly, the words flowing out quickly, even though he wasn’t sure why he was telling you that. Only about two percent of the U.S. population has a PhD, and an even slimmer percent had more than one. So it was an unusual thing to say.
He thought you might laugh again, or even question him, but you simply hummed and moved onto the next book, chewing your lip. “I’m in a graduate program for poetry,” your voice was quiet, as required by the library environment, but more so than usual, like you seemed embarrassed to share that information. 
It made sense you were a graduate student working in a library while earning your MA in writing. He wondered if you had plans for your degree beyond getting a slight pay increase as a librarian. There was a career as an author, or maybe you wanted to be a teacher or a professor, he could see you doing that, standing in front of a class in your skirts and sweaters pointing at a chalkboard with a ruler, though that image was outdated. More likely you’d be in front of a white board or presenting from a projector. 
“That’s interesting. I find myself reading a lot of nonfiction recently—it helps more with my job, though I also just enjoy facts and statistics—but I’ll always have a special appreciation for fiction. I’m fond of poetry in particular because it’s created for multifaceted analysis,” even in his own whisper, the words were breathy and fast. He had to catch his tongue between his teeth when he caught your eyes trailing back up to him. “What do you plan on doing with your degree?”
“Write poetry hopefully,” the words came out in a gust of wind and your eyebrows quirked up, as if you didn’t believe even your own dream. “Maybe you can analyze it one day.” You finished scanning out the books, putting them back into two neat piles as you did. You went about clicking at your computer, making sure the books were grayed out in the system, avoiding his eyes.
So you did want to be a writer then. He could easily see that as well. Though he got the sense you didn’t believe your aspiration was attainable, and it likely wasn’t due to lack of skill. He told himself he wouldn’t profile you, but he did it practically subconsciously. Your lowered gaze, modest clothes, shy smile, and even chewed nails all pointed to a lack of confidence in yourself. He wasn’t sure why. You were pretty in your own right, and were clearly intelligent and hard working if your pursuit of a masters degree said anything. If you needed a little encouragement, the least he could do was give it to you.  “I look forward to it,” he said, and he was just as sincere as he always had been. 
It only seemed to increase your embarrassment, causing your face to shy further away from his gaze. “Thank you, Spencer.” Even if you couldn’t look at him, your tone was of genuine appreciation, and if he tilted his head just right, he could see the wisp of a smile on your face.
He nodded with a tight lipped smile, staring at you while he waited for the conversation to continue, only to realize you’d finished with his books and it was over. His hands stuttered to gather up the first heap of books, muttering about how he’d be back. However he only got a few paces when he heard you say his name again, feet stopping dead.
“Would you like me to help you carry these out?” You were already trying to get a hold on the books.
Quickly, he shook his head. “No,” the words came out abrupt and firm, louder than he’d ever spoken before in the library, and you flinched. 
“You shouldn’t be following anyone out of here to their cars. This library has a disturbing lack of cameras and an abduction, even in a public area, can happen in less than ten seconds. It’s safest for you to remain in the library and follow the good practice of having someone walk you to your car after your shifts.” Spencer felt obligated to warn you strictly, because your distinct quietness and sweetness made you the perfect prey for the killers he hunted daily. 
Though he almost regretted it as he watched the way your hands retreated from the books, crossing around yourself, and the gentle smile became forced. “Oh. I–I guess I’ll keep that in mind.”
Spencer nodded and hesitated, but didn’t linger much longer before exiting the library and heading back to his car. He was quick to toss the books into his car, your tangled smile stuck in his mind. Was it an odd thing to say? He was only trying to warn you, to keep you safe. But the look on your face, you didn’t seem at all grateful for the advice. Spencer took brisk strides back to the library entrance. You were standing there behind the front desk, arms still crossed, a distant look on your face. When you heard him approaching the counter taking in breath just a little faster from boardline jogging back, you barely spared him a glance. He scared you a bit, he realized, and he didn’t want to leave you like that. 
He paused beside his leftover books, wetting his lips.  “I didn’t mean to scare you with what I said before.” He finally caught your eyes and you seemed to hear him out. “I work in law enforcement, for the FBI actually, and all too often I see cases of nice girls like you who go missing just because you want to help people. Unfortunately it’s a pretty common ruse. So, I—I didn’t tell you all that to make you worry, but because I want you to be safe,” he admitted, and your face softened again, your hands falling back to the counter. It brought a smile to his own face to see you relax your guard again. “It’d also be awful if my librarian went missing. Who will check out the heap of books I keep bringing you?” 
You giggled, your lips pulling into a toothy smile. “It’d definitely suck, but I’d hope you’d put those FBI skills of yours into finding me.”
Spencer chuckled, ducking his head into his chest to quiet the sound as he pulled his books into his arms. “Of course I would, and I wouldn’t stop until I did.” He was good at his job, he never stopped until he found their victim, their unsub. 
You bowed your own head, hand holding your glasses to keep them from slipping down your nose. “Goodbye, Spencer.” You gave him a small wave with the other hand, ending the conversation with averted eyes, but he still noticed the growing color in your cheeks. 
He fumbled with his own wave under the stack of books, really just an outward flash of the fingers he could manage to peel away for a second, and he was glad you weren’t looking at him with how awkward it was. He turned on his heel, pink growing in his own cheeks, and exited the library again for the final time today. The gears in his head grinded the whole way to the car and continued as he grappled to get into it and wiped the books with disinfectant. 
You lingered in his mind longer than a librarian should have. He wasn’t sure why he felt the need to warn you, to explain himself to you, or even comfort you. There was something about you, as meek and bashful as you were, that he found charming. Perhaps he saw himself in you, the insecurity. Or maybe it was how different you were from his job, where he was met with the most wicked minds and evil acts. You in comparison were the very image of innocence and life, in your pastel purples and yellows, lively eyes magnified behind glass, and your—your laugh. He liked your giggle. Even though he suspected at times it meant you didn’t fully believe him, he let you find him unserious, just so he could continue to hear that sweet sound tickle his ears in a way that scratched an itch inside him.
He was sitting in the parking lot staring out the windshield lost in his thoughts of you. When someone walked by, he found himself clearing his throat and finally putting his car in drive. You dissipated from his mind as he pulled out of the parking space because his Sunday at the library was over. 
It took five days for him to finish the ten books from the library. The team was in California from Tuesday through Thursday, but he took four books with him to read during his down time and while on the jet. He still ended up with spare time that he spent shopping with Penelope and babysitting Henry for JJ and Will’s date night. It was for this reason he was glad to be back in the library on Sunday.
Inside he was hit with the familiar crisp air and the vague smell of paper and coffee. The tables to the left had quite a few more students than usual, though there were not very many to start with previously. He wondered if a bout of exams were coming up. As Spencer neared the front desk, he could smell something else, a faint vanilla scent maybe.
You were there as always, standing this time, and almost leaning over the counter to see the door. You smiled when you saw him and he realized that you must be wearing perfume, because around you the vanilla air became thicker.
“Sunday at 11am. You're more reliable than my alarm clock,” you hummed cheekily.
Spencer set the books he held in his hands on the counter, his messenger bag following them up. “Having a routine is actually really good for you. It’s been proven to reduce anxiety and stress and also helps people to cope with certain mental illnesses,” he told her, pulling the rest of his books out of his bag.
If you were thrown off by his fact telling, you didn’t show it. “That makes sense. I like having a routine, but I’m pretty sure my friends think it makes me boring.”
Spencer dug around in his vest pocket for his library card, brows furrowing. “Why would you think that?”
You plucked it from his fingers, bringing it to the barcode reader without breaking your eye contact. “Because they say it to me all the time.”
“Oh,” Spencer snorted a little and clutched the strap of his bag closer. There’s something different about you today. You’re much more talkative and playful, but it’s also in your appearance too. Your glasses are still perched on your nose and your face is bare as it always is, but your updo is more put together, less stands fall away into your face. You wear another long skirt, but it's tighter, less flowy, and he can nearly make out the shape of your legs through it. You’re wrapped in a cardigan too, but where one side falls open he can see your tank top underneath and the sight of your skin has him clearing his throat and bringing his eyes back to your face. 
“And how was your recreational reading?” You’ve started to scan the books back into the system. “You must have been pretty entertained with ten books in seven days.” You state it like a fact, but your tone has a whimsical disbelief to it.
“Actually I finished them in five days,” he corrected with an incline of his head. 
You reply quickly, like the words were primed in your mind. “Then you should have come back sooner.” Under the teasing, you sound serious, looking up from the books at him, lashes fluttering against their glass encasement. 
“I would, but I’ve been pretty busy at work.” He was too. He would spend hours in the library reading if working at the BAU didn’t take up so much of his time. He loved his job of course, and he wouldn’t have it any other way, but what is someone with his talents to do but hole himself up gorging every book he can get his hands on. Spencer had a thirst for knowledge, that’s why he wanted to be in the library so much. 
“Well, that’s too bad then. What do you do for work?” Your head tilts with interest and he almost mirrors the movement, brows furrowed. 
 “I told you—I work for the FBI. Specifically, I’m an agent in the Behavioral Analysis Unit.” He has an eidetic memory which means he can remember every word you’ve said to him and every word he’s ever said to you, so he knows he’s told you this before. Of course he knows people forget things, but they also normally remember when he tells them he’s in the FBI.
Your face falls a bit and you chew your bottom lip, brows creasing. “Oh. . . right.” You finish scanning the last book quickly, gathering a couple into a pile to carry to a cart behind you. 
Spencer’s not exactly sure what he’s done to upset you, but his fingers twitch with the itch to fix it. Unfortunately, he’s got the idea his job is what makes you so uncomfortable. It wouldn’t be the first time someone was unsettled by the fact he carried a badge and gun, or that he had the authority to arrest people. But you had joked about it last week, possibly were soothed by the fact he was a cop after his blunt and maybe eerie warning. So why were you suddenly so upset with him? 
The thought occurred to him then that  maybe it was because you didn’t completely believe the things he was saying. Not only that, but you were no longer finding whatever game you think he’s playing by telling you those things to be funny. As you carry the rest of the books back to the cart, he fidgets with his fingers, wondering if it was time to show you proof of what he’s been saying. Or did you really even care? Maybe he was wrong and you would be even more frightened by him presenting you with his badge. Was it odd to flash his FBI credentials at his librarian? That was all you were after all. He didn’t even know your name.
You were back to clicking at the computer when you glanced at him. “They’re all checked in.”
Spencer froze as you pulled him out of his thoughts, his hands locking in the joints before dropping to his sides into fists. That was your cue for him to leave. “Right, thank you.” He went to walk away, but his feet were stuck. “. . .thank you, um, I just realized I don’t know your name.”
You didn’t have to tell him, you could have brushed it off. You were just the librarian and one didn’t need to know the librarian's name, but you looked back at him again, eyes studying his face. Then, you murmured your name so softly he almost leaned in to hear it louder. Soundlessly, he let your name ghost over his lips.
He used it as he thanked you one last time, certainly overkill but it seemed like the only correct way to exit. Although he only got a few feet before he heard you call his name.
“Spencer, wait!” You didn’t yell, he’s never heard you yell, but your voice was the loudest he’s ever heard it. You always spoke in a whisper or a hushed tone, but your voice was nearly normal when you called him back. The urgency of it had him back in front of you in just two strides.
You dipped beneath the counter and when you came back up you placed a basket on it. “When I used to go on picnics to read in the park, I used this basket. Well, I haven’t gone in a long time actually, but I thought maybe you could use it for all the books you check out,” you were bashful, tilting your head down and only sparingly meeting his eyes. Spencer was in shock, all he could think about was how this was one of the nicest things someone’s ever done for him. You gave him whiplash with how quickly you seemed to forgive whatever trespass he committed against you. He wondered even if he exaggerated the interaction in his head. 
The basket was woven, made from wicker, and had two handles at the top. It was rectangular in shape, pretty deep, and large for a picnic basket, he thought, big enough for fruits, pastries, sandwiches, and maybe more. It was a very nice basket, and the thought that you were giving it to him made his heart ache the most. You’d considered him, truly sat down and thought about him and then decided you were going to gift him a solution to his awkward problem. Not often did people solve his problems, it was always the other way around.
“Wow,” his finger grazed the side, considering the cost such a nice piece must be. “Are you sure? I really couldn’t take your basket it’s—”
“I don’t use it anymore,” you interrupted him for the first time. He realized that you never cut him off, you had always listened to him. “You can have it. . .” Your face was kind, then suddenly dropped into a panic. “Only if you want it of course! You don’t have to take it. I guess it’s kind of silly, carrying a picnic basket in a library. . .” You started to pick your nails, not meeting his eyes.
“I don’t think it’s silly,” he assured you quickly, leaning just a bit closer so he could catch your eyes again. “Thank you so much. Now I don’t have to worry about falling down the stairs or taking two trips to my car.” 
Your smile returned with a breathy chuckle. “Yeah, you kind of made me nervous going down the stairs like that with all those books. You don’t strike me as very. . . coordinated.”
“Ouch,” Spencer said, though he smiled back at you. You’d read him there, he was not very coordinated at all. Knowing physics was one thing, existing smoothly and with grace on the physical plane was another. 
“Sorry,” you shrugged half heartedly.
“No, you’re right. Thank you for the basket and uh, I’ll be back,” he waved you goodbye as he walked toward the stairs and you fluttered your fingers back at him. 
Spencer took exactly 52 minutes and 34 seconds adding books to his new basket. He got a few stares and side glances as he toted it around, mainly from a group of teenagers huddled at a miniature table and chair set in the children’s section. They snickered as they peeked up from their circle at him, but it wasn’t anything Spencer wasn’t used to. All his life people had laughed at him for a variety of reasons—he was too scrawny, too small, too bumbling, too nerdy—the list was miles long. All he could do was grow thicker skin, and he had. So he didn’t let it bother him as he wandered the library, adding books to his basket. 
No, the reason Spencer took so long to pick books was because each time he slipped one into a wicker embrace, he thought of you. He blinked and saw your face like a phantom burned into his retinas. The way the corners of your mouth twisted in your smile when you were so excited to give him the basket flashed and faded in his vision. Sometimes he cursed his eidetic memory because he’d memorized your face in its entirety with all its most miniscule details and peculiarities—and he didn’t even mean to. He would find himself staring into the empty space in the basket and have to drag his brain clawing back into reality.
His watch had ticked past 12 when he made his way back down the stairs to the main floor, lugging his basket in his right hand. It was heavy, weighed by two textbooks and eight other decently thick books, but the woven willow held strong. 
At the landing he could see across the library that you were already checking someone out. He meant to add himself to the queue, but pivoted to a lounge chair between two bookcases just as he got close enough to hear your voice. Immediately he felt wrong, a churning disgust with himself in the pit of his stomach. It was weird, wasn’t it? To watch you from afar just to gauge your behavior? But he had to know, it burdened his brain to wonder if you were just so saccharine it spilled out to everyone around you or if particularly you poured your sugar onto him.
You didn’t see him duck between the shelves to the lounge chair, not in any way that he could tell. With a tranquil neutral face you scanned the book that the college girl at the counter placed in front of you. The interaction was done in comfortable silence, even when you finished the transaction and she said her thank yous, you merely mumbled a “you’re welcome.”
It was different from how you interacted with him, he realized. You were much more playful and chatty with him, but he wasn’t sure what exactly inspired it in you. You were clearly shy, maybe anxious, but in some moments it faded when you talked to him. He didn’t think he said anything particularly special, but thinking you saw something in him that made you so comfortable, so cheerful, made his stomach flip in a way he couldn’t understand.
The next man in the queue placed his book on the counter. He was the only other person waiting. You asked him absent-mindedly for his library card. He was older than you and Spencer, mid to late 40s if Spencer had to guess, but it gave him an idea about how you interacted with men as well. Which was just as bland as your interaction with the college girl before you. Spencer had a fleeting thought that maybe—just maybe—you liked him. Why else would you be so inclined to laugh with him? To be so shy sometimes you couldn’t meet his eyes? He’d read books, watched movies, and he knew the signs. He was just not used to spotting them in women interacting with him.
He cleared his throat as if to shake off the idea. It was vain, and in all likelihood an arrogant over analysis of the little interaction he’s had with you. He was about to get up and put himself in line behind the man when he heard his lurid voice croak out.
“How about you give me a smile, pretty?”
Spencer froze in place, white knuckle grip engraving the grooves of the entwined handle into his palm. Something like anger flared in his chest. It grew hotter as he saw the way you bowed your head even further from the man's sight, pulling your cardigan closer around your body.
“Um, yeah, could I just get your library card?” You squirmed under his leering gaze, lips faintly curling into the most awkward half-smile you could muster. 
Despite the way you clearly showed you were in duress, the man leaned closer over the counter. “My name’s Todd.” He slid his book across the counter to you like that tidbit of information helped any. “I’ll take this book and your number, baby.” Spencer’s jaw clenched.
His body tingled with the readiness to step in, to tell this Todd fucker to leave you be because obviously you weren’t interested. But his mind, the logical side of him, stopped him because Spencer also respected you and your autonomy. He was not an expert on women, but he knew quite a few strong women in the BAU who would be offended if he stepped in to defend them when they were capable of doing it themselves. He definitely didn’t want to offend you if you were able to brush off Todd on your own.
The uncomfortable smile dropped to a grimace. “If I could get your library card. . .” Your hand hesitantly reached for the book only for Todd to grasp your wrist in a tight hand.
“Stop asking for the damn card,” his voice dropped into a growl. “Baby, I’m just trying to talk to you.”
Your arm fought to pull your hand back behind the counter, but Todd’s grip tightened and pulled back to keep you close. “Sir!” Your voice pitched higher, eyes widening almost too big for their frames. “Sir, please let go—”
Todd huffed, face screwing up in frustration. “Why’re you being so difficult?”
“Sir, you���re hurting her and you need to let go now.” Spencer practically flew over to the front desk. It was his instincts as an FBI agent kicking in. The need to de-escalate and protect was driving him. This man was now hurting you and he was not going to allow it to go any further.
Todd’s scowl looked Spencer up and down, assessing whether or not he could take him. He must have come to the conclusion Spencer was not a threat because he puffed up his chest and continued gripping your wrist. However, he was so distracted by Spencer, you were able to yank your arm away, rubbing at your wrist with your free hand. Todd shot you a similar glare before leveling his even angrier gaze back on Spencer.
“We’re just having a conversation here, asshole. So why don’t you get back to your books,” Todd barked at him so loud they had now attracted all the eyes in the library. But Spencer was only looking over at yours—your creased brow and the watery worry the glass highlighted. 
“Spencer, it’s—” You didn’t get to finish as Todd whirled his head between you and Spencer. 
“Spencer? No fucking way this wimp is your boyfriend.” Behind the rage, Todd looked almost smug.
But Spencer wasn’t. He hit his own boiling point and was passed asking politely. He pulled his credentials from his pocket and flipped them open in Todd’s face. “No, I’m the FBI agent who is going to arrest you for harassment, assault, and public disturbance if you don’t get out of this library right now.”
Todd’s head reeled back at the badge in his face, eyes squinting between the lettering and Spencer’s face. Realization of how much shit he was in passed briefly over Todd’s face before reverting to his glower. He must not have wanted trouble with the FBI though, because he started taking steps backwards toward the exit. But he couldn’t leave with a completely bruised ego.
“Whatever man. If you want the uppity bitch so bad you can have her!” Todd slammed open and closed the door as he made his grand exit. The entire library watched it, listening to him as he got his last dig in and fleeing before Spencer could make him eat his words. He didn’t have his cuffs or gun on him, but he’d dealt with enough unsubs to know he didn’t need them to handle Todd. 
When all the eyes slowly went back to their business, sure that Todd wasn’t coming back into the library, Spencer’s gaze returned to you. Your eyes were dinner plates, mouth agape, still clutching your wrist.
Spencer frowned, whispering your name. “Are you okay?”
“You’re an FBI agent. . .” The words slipped out of you in one shocked exhale. His brows furrowed. He just rescued you from an arrogant asshole and that was what you were stuck on, something he’d told you several times.
“Yes? But I told you—” 
“You were serious?” Your head bobbed forward in disbelief. So you really hadn’t been believing what he was saying. 
“Of course, why would I lie about that?” Spencer was confused and deep down a little hurt. It was such an odd thing to lie about to a stranger, he didn’t understand why you thought he wasn’t truthful. 
“I–I don’t know,” your eyes bounced around in a panic. “I thought you were just trying to impress me. I mean—you don’t really look like an FBI agent you’re. . . young? I don’t know, I thought you were flirting with me so I—” Your hand clasped over your mouth. “Oh my God. I’m so sorry, sir—agent—”
“Spencer.”
“What?”
“Call me Spencer,” he gave her a tight lipped smile, a near look of pity on his face. Your complete panic reassured him you were just as embarrassed over the miscommunication as he was. “Technically it would be Doctor, since I have three PhDs—but you can just call me Spencer.”
“But—But I didn’t. . . you were being serious the whole time and I. . .” You stuttered, shaking your head in confusion. “I was so unprofessional. . .”
Spencer chuckled, unable to hold it back. “Unprofessional? Just because I’m an FBI doesn’t mean I can’t like to talk to people. And I like talking to you, you don’t have to be embarrassed about it.” His disappointment dissipated quickly. Your shyness and embarrassment was so genuine and charming he couldn’t find the space to be upset with you beside all his amusement. 
You crossed your arms, somehow becoming even more bashful. “You’re sure it's okay?”
“Of course it's okay.” Spencer grinned.
A small sigh of relief breezed past your lips. “Okay. . . I should—I should definitely apologize for not believing you.” You meet his eyes then with such profound remorse. “Because I am really sorry. It’s just. . . your accomplishments seemed so amazing they were kind of hard to believe, especially for someone so young.”
It was Spencer’s turn to become bashful. His head ducked and he laughed quietly. “I guess they can be hard to believe. Especially when you aren’t meeting me at work. I just thought maybe all the books helped prove it.”
You let out a shaky laugh, eyes wandering back down to the countertop. “I kinda thought that was also to impress me. I didn’t really think you were reading all of them.”
“Well. . . I do.” He shrugged, figuring you had to believe him now. As you smiled at him, he realized he left his basket and books back at the chair. “Speaking of reading, I’ll be right back.”
You eyed him as he retrieved the basket and set it on the counter in front of you along with his library card. “Oh, were you sitting over there?” You looked curious. Certainly you hadn’t seen him sitting there today or anytime before.
Spencer coughed into his fist. “Um, just for a second.” He moved on quickly, removing the books from the basket. “Thank you for this again, by the way, it’s so much easier to carry all the books.”
You hummed, eyebrows jumping up. “Yeah. . . I’m having trouble believing I really gave an FBI agent a picnic basket to carry books in.” You started swiping the books over the barcode scanner, adding them back into the basket once they appeared on the computer screen next to you.
He cracked a half smile. “I think you watch too many movies. We’re not as serious as you think we are.” Hotch’s face flashed in his eyes and he thought maybe they were pretty serious, but not off duty. Hotch could also be serious enough for the whole team sometimes, so maybe he wasn’t a very good example. “And I like the basket. It was nice of you to think about me.”
Your eyes caught on his for a moment, glazed over in thought, so deep you bumped the basket as you went to set the book you held into it. It snapped you back into reality and you watched your hand as you tucked away the book, clearing your throat. “You’re sure it’s not weird?”
Spencer’s head tilted to the left, considering you. He didn’t know what he could do to pull you back from this rut of self-consciousness. He was starting to regret ever pulling out his badge because now you seem standoffish in a way you never were with him before. He wanted to go back to when you laughed and smiled at him and didn’t find him intimidating. “Of course it’s not,” he paused a moment, wetting his lips. “And this isn’t weird either, y’know? Me being in the FBI? I’m still Spencer.”
You looked back at him again, eyes searching his face. “I know that. I’m. . .” You stared at him a second longer, taking in a deep breath and releasing it with a smile. “I’m letting it sink in.” You continued scanning the books quietly, not meeting Spencer’s eyes as he absentmindedly picked at a loose string in his pocket.
His thumb brushed against his FBI credentials and the encounter just before this revelation came flooding back. He glanced over at the double doors as if to make sure Todd had not come back, though Spencer already knew he didn’t. 
“Are you okay?” You met his eyes, brows pulled together. “About before—with that guy?”
“Oh.” You shrugged, rolling your wrist unconsciously. “Yeah, I’m fine. We get one of them every now and again. Normally they’re pretty harmless.” A glimmer of realization passed over your face. “Um, thank you! I should have said that before. Not everyone would have done that.”
Spencer shook his head, waving off your thanks. “Of course. I’m sorry you have to deal with that.” He was again reminded of the fact he was not a woman, and even though his job was to put away serial killers—monsters, creeps, pervs—he couldn’t imagine what it would be like to be in your shoes. You shook it off well, but he didn’t doubt you were scared in the moment. Probably wondering how far he would take it, whether your reaction was appropriate, if your employer would be angry at you. He was just glad he was there to step in.
Slowly, you finished scanning all the books, tucking them neatly into the basket in an organized order he thoroughly appreciated. Heaviest books sat at the bottom and lighter books were stacked on top of them. You paused, flipping through the last book in your hand, a biography of Max Born, a German-British physicist. 
“So. . . you really do read 20,000 words per minute?” You had a cheeky grin as you peeked up at him from beneath those frames, and suddenly you were back. Spencer smiled.
“Yup. I also have an IQ of 187 and an eidetic memory.” He shrugged as if it was no big deal.
You giggled, nodding along. “Right. Well then I guess this isn’t even enough books for you.” A finger waved over at the basket.
“It depends on work, actually. I’m usually busy, but I often have to travel too and then I become really busy so I don’t have time to read,” he explained. When he did sit down to read, he could get through one to three books, depending on their volume. “But yeah, ten books in a week is kind of light.”
You tapped the book in your hand with your thumbs, thinking. “Okay.” Suddenly you dropped the book into the basket, dipping below the desk to set another book in front of him. Examining it, he realized by its orange and yellow coloring it was the same book you had been reading the last time he was in the library. It was The Poetry of Pablo Neruda and from the look of its creased spine and faded orange cover, it was well loved. “You should read this too then.”
Spencer turned the book over in his hands, looking at you with a twisted face of confusion. “But the check out limit is ten books?”
You shook your head, gesturing for him to add it to the basket. “It’s not a library book,” when he still looked puzzled, you continued. “It’s my book. You can borrow it from me.”
Your kindness and generosity was both shocking and overwhelming. Spencer wasn’t sure how he was to thank you for being so gracious to him. He could only think of one thing. So he quickly fumbled his wallet up onto the countertop. “You have to let me give you something for this—”
“Spencer,” as you said his name, your hand covered his as he dug for bills to give you. “You don’t owe me anything.”
He shook his head, bewildered. Not only was your kindness startling, but so was the feeling of your hand on his. He had to stop his body from flinching at the contact. He was mostly uncomfortable at the thought of people touching him, but your palm was warm, soft, and offered the most comfort he’d felt in a while. “The basket and the book? It’s too much. I mean. . . you’re too nice.”
Your lips spread into a bright smile, flashing him your teeth. “Just bring me back your analysis. I’d love to hear what an IQ of 187 can cook up. Deal?”
Spencer laughed, ducking his head as he nodded in agreement. “Deal.”
When the laughter faded and his head came back up, he looked at you for a while longer, just feeling the paperback cover underneath his fingertips. You met his eyes just for a few moments, twiddling your own fingers. “So um, see you next Sunday?” You asked. He dared to see hope in your eyes.
“See you next Sunday,” Spencer agreed again. He hesitated putting the book in his new basket then finally left the front desk, waving you goodbye as he did. He watched over his shoulder you return his wave as he exited through the double doors. 
Spencer walked back to his car practically swinging the basket, so in his head he didn’t even realize he still had a smile on his face. He set The Poetry of Pablo Neruda aside as he disinfected his books and wondered what he would do the rest of his day off. What he was sure of, deep in his chest, was that he was excited for next Sunday. 
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apas-95 · 1 month
Text
A botanist, a biologist, a chemist, and a physicist were chatting together, as is known to happen, when the botanist stated: "Some people have the gall to say botany isn't a real science, just gardening."
"Well," says the biologist, "it is just applied biology.
"If we're being strict..." butted in the chemist. "Biology is just applied chemistry," followed immediately by the physicist:
"... Which is just applied physics!"
A mathematician, inexplicably not under the effect of stimulants, called from across the room. "Which itself is applied mathematics!" they said, before returning to their paper on the fuzziness of balls.
The physicist, incensed, stormed off, and returned a moment later with an oscilloscope, spirited away from somewhere, and which they plugged into something. "Have a look at this! This fundamental physical constant of the universe, this frequency, is something knowable to all intelligent life - your axioms and systems? All abritrary," they said, somewhat undercut by the oscilloscope picture being so misaligned as not to show anything at all.
A stranger leans over, to fiddle with the oscilloscope: "They're right; it's actually engineering that's applied mathematics. Physics," they said as they flicked the big, obvious, automatic gain control button on, "as plainly can be seen, is applied engineering." They stood, the image on the oscilloscope clear as day
'Ugh, who let an engineer in here?' every other person present thought in unison.
"And if we're being strict..." the engineer continued, "historically speaking, because of the social, political-economic reasons for the development of advanced number systems... it's actually mathematics that's applied botany."
Immediately, the fire alarm went off, because their coworkers had meanwhile been arguing over fire extinguishers while their office was ablaze.
Note: given random chance, the above tale has a statistically significant likelihood of being true, but contains one obvious factual inaccuracy: the absurd notion that an engineer could be in the room without immediately making sure everyone else knew it.
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