It may be irrational but pi plays an important role in the everyday work of scientists at NASA.
What Is Pi ?
Pi is the ratio of a circle’s circumference to its diameter. It is also an irrational number, meaning its decimal representation never ends and it never repeats. Pi has been calculated to more than one trillion digits,
Why March 14?
March 14 marks the yearly celebration of the mathematical constant pi.
More than just a number for mathematicians, pi has all sorts of
applications in the real world, including on our missions. And as a holiday that encourages more
than a little creativity – whether it’s making pi-themed pies or
reciting from memory as many of the never-ending decimals of pi as
possible (the record is 70,030 digits).
While 3.14 is often a precise enough approximation,
hence the celebration occurring on March 14, or 3/14 (when written in standard U.S. month/day format), the first known celebration occurred in 1988, and in
2009, the U.S. House of Representatives passed a resolution designating
March 14 as Pi Day and encouraging teachers and students to celebrate
the day with activities that teach students about pi.
5 Ways We Use Pi at NASA
Below are some ways scientists and engineers used pi.
Keeping Spacecraft Chugging Along
Propulsion engineers use pi to determine the volume and surface area of propellant tanks. It’s how they size tanks and determine liquid propellant volume to keep spacecraft going and making new discoveries.
Getting New Perspectives on Saturn
A technique called pi transfer uses the gravity of Titan’s moon, Titan, to alter the orbit of the Cassini spacecraft so it can obtain different perspectives of the ringed planet.
Learning the Composition of Asteroids
Using pi and the asteroid’s mass, scientists can calculate the density of an asteroid and learn what it’s made of–ice, iron, rock, etc.
knowing the circumference, diameter and surface area of a crater can tell scientists a lot about the asteroid or meteor that may have carved it out.
Determining the Size of Exoplanets
Exoplanets are planets that orbit suns other than our own and scientists use pi to search for them. The first step is determining how much the light curve of a planet’s sun dims when a suspected planets passes in front of it.
Actually horseshoe crab blood is blue because it contains a lot of copper. They use that particular mineral to do the job that iron does in human (and other animal) blood, and instead of hemoglobin they have something called hemocyanin, which transports oxygen throughout their bodies. Their blood also deals with infection in a way that’s much different than ours, and clots aggressively around any foreign body to the point where it’s easily seen under a microscope – this is what makes their oozing goop absolutely vital to the pharmaceutical industry.
The gel-like substance that surrounds the slightest bacterial infection in horseshoe crabs was co-discovered by the tremendously named scientist Fred Bang. The chemical that causes it to occur, called coagulogen, allows us to very accurately test medications for contamination, can detect anomalies as small as one part per trillion, and is used on just about every single drug that comes out. And the way to get it is to capture a shitload of crabs, jab a needle in their assholes, and subject them to a process called “rack & bleed.”
<b>Wilford:</b> hey watch this-<p/><b>Darkiplier:</b> don't<p/><b>Wilford:</b> hey Google<p/><b>Google:</b> Yes?™<p/><b>Darkiplier:</b> no<p/><b>Wilford:</b> what's one trillion to the tenth power?<p/><b>Darkiplier:</b> shit not again<p/><b>Google:</b> one trillion to the tenth power is one zero zero zero zero zero-<p/><b>Wilford:</b> hahahahahahahahaha-<p/><b>Darkiplier:</b> fuck it CANCEL<p/>
Wilford:</b> you ruin everything, Dark<p/></p>
Her legs ache, her lungs burn; Rey relishes the wordless challenge Ahch-to lays down before her every time she returns more than her reason for being here. Idly, she wonders if this is her lot in life, chasing after rogue Skywalkers and dragging them back into society.
Well. Not society, not in this case. But there’s use for a man like Ben Organa out in the galaxy, and Rey is climbing a damn mountain to remind him of that fact.
She can feel the jagged edges of him through the Force as she nears the top of the island. Not a wound, not anymore, but something barely healed over. It pulls her in, as much as she’d like to think she came up with this all by herself.
Thanks. His voice rustles drily across the open stretch of grass and rock between them as she crests the ancient steps, echoes in her mind. She rolls her eyes, not bothering to respond mentally or otherwise, tucking her hands into the pockets of her pants.
The dark smear of him sits cross-legged on a precipice - about as far from the outcrop where she’d first handed Luke his father’s lightsaber as a person could be and not fall into the ocean. He doesn’t turn as she approaches, doesn’t even open his eyes. But she can see his hands from a distance, pale and ungloved and resting on his knees. She the way long fingers curl in on themselves the closer she gets.
His presence in the Force vibrates, an energy barely leashed by his willpower. She hasn’t even touched him yet.
“I’d say I can come back later, if you’re busy,” she says, squinting out at the horizon. Other islands dot the endless ocean, all of them empty. Even with navigation to this planet better known about these days, no one seems to want to come here. “But I’m not going to.”
He stills, an impressive feat for someone who already wasn’t moving much. Even his breathing stops, like he’s waiting for her to correct herself before he tries to speak.
Rey says nothing.
“What,” he manages finally, “are you talking about?”
She shrugs. “At first I thought, all right, this makes sense. Your mind was in a delicate place, and so was your handle on the Force. No one knew if you were going to snap and fall right back to the Dark Side again if given half the chance, so giving you a planet’s worth of space seemed like a good idea.”
“I was not in a delicate place.”
Hollow words, and they both know it. Rey had flayed him open and carved out what she found there, laying it out for the light to get to. Putting him back together had been a…task, and one she still isn’t sure had been completed.
What she is sure about is that Ahch-to is not the place for finishing anything. Ahch-to is a held breath, a place where the entire universe is put on pause. Rey refuses to live like that.
She’s not convinced it’s living at all.
“I didn’t come here to argue semantics,” she snaps. Stars, but he has that way of getting under her skin, even after all this time. She’d never had much of a temper, not until she’d encountered Kylo Ren. He might have retired the name, but that didn’t mean the person had just disappeared into the ether. Ben Organa is a promise still unfulfilled, to her mind.
He unfolds himself in a single motion, towering over her. The scar is stark against the pallor of his face, and her fingers itch to trace the furrow she’s left in his flesh, like they do every time they meet again. Her chin juts out, feet working into the dirt. There’s nothing he can do or say to threaten her these days, and no one has ever out-stubborned Rey.
For a second it seems like he’s going to try anyway, but she clocks the sag to his shoulders before he sighs, dark eyes focussing somewhere over her left shoulder. The Force sings with the strength of him, but he keeps it reined in tight, careful not to brush up against her.
“Then why did you come here?”
“To give you a chance.”
“Half the galaxy would argue you’ve already given me too many of those.”
“More like three quarters.” She grins despite herself, bites it back. He closes his eyes in one slow motion, and it’s unclear if that’s supposed to be a long-suffering gesture, or - or a defence against her smile.
(She’s not an idiot. She knows what lies between them, vast and unspoken and shuddering with possibility).
“I’m glad you’re entertained,” he mutters. “You haven’t answered the question.”
“All right. Try this. Neither of us clawed our way back to the Light to spend a life in quiet contemplation, and if I owe a debt to the galaxy, you’re practically bankrupt.”
His eyes snap open, and there’s that old fire. Corralled now but no less full of heat for it, and Rey can’t deny that her heartrate picks up at seeing it. Not bothering with subtlety, she places her hand on her lightsaber hilt a warning.
He doesn’t notice. His powers of observation, she’s noticed, tend to fail when his emotions get going.
“If you think I’m going to crawl back to the tatters of the Republic to bow and scrape and beg for forgiveness–”
“I don’t,” she bites off. “Although we both know you’d deserve that. You’re a war criminal, Ben, and the fact that I’m here at all–”
Makes her complicit. But Rey has long since come to terms with that. There are things she’s willing to live with, and things she can’t survive, and this man straddles the divide in ways that are…difficult to deal with. That keep her up at night, well into the morning, exhausting herself with the same argument time and again while knowing the answer won’t change.
She has given him too many chances. She won’t take any of them back. They are tied together, Ben and Rey and Kylo, and she has to find a way to live with that.
She sucks in a breath, calming herself. Ahch-to helps, in its own quiet way, the crash of water on rock soothing the irritation simmering in her chest.
“Stay here if you want to,” she says. “Hide away from the galaxy and the hurt you’ve caused, if that’s what it takes to keep it safe from you, and you safe from it. But I won’t be returning here as long as this is where you remain. I have work to do. You’re welcome to join me.”
Incredulity is a good look on him, or maybe Rey just enjoys taking him by surprise. His expression twists, made worse by the scar, and she gives in to the urge to touch it. The calloused pads of her fingers dip gently over the scored flesh, and there he is, holding his breath again.
“Is this you trying to convince me?” he growls.
If it was, it’d be working. But she keeps that to herself (maybe because it’s another thing they both know), letting her hand drop back to her side.
He reaches for her wrist before he can stop himself, large hand curling around it. Not tight enough to hurt, just maintaining the contact.
“No,” she says. “It’s not my job to convince you of anything. I’m not here to save you. I’m here to let you know you have a choice.”
“To spend the rest of my life serving people who have every reason to hate me?”
Rey gives a single-shouldered shrug. “If that’s how you want to look at it. No one controls how you think any more. You have to decide what you can live with. I’m just here to let you know what I can live with.”
And she slowly, gently, removes his hand from her. The air itself seems to shiver with disappointment when they’re no longer touching, but she’s gotten good at ignoring that sort of thing. She draws in a breath and takes a firm step backwards. And then another, and another, until she’s pivoted on her heel and his making her way back to the stairs.
“Is this it?” The wind catches his words and tosses them after her, but she thinks the desperation on them is all his. “I come with you now, or I never see you again?”
“It doesn’t have to be now,” she shouts back. “I’m not here to give you timelines, either.”
Silence. She makes her way down those ancient steps without being interrupted by anything more than the squall of wildlife and the incessant rumble of the sea.
It’s not disappointment sitting in her chest, as she lowers herself into the pilot’s seat. But there is something heavy there, something that she’s going to have to take a closer look at one of these. Maybe when–
The Force shifts. Not dramatically, or violently. Just one of a trillion small yet significant motions that it goes through every day. Something tickles in the back of her mind. His voice.
How much do you love meth? Be honest, I won’t tell anyone. If statistics are to be believed, more than a few of you probably put meth in your cereal, because that shit is delightful. Between 2000 and 2010 America spent about one trillion dollars on illegal drugs, or a modest $100 billion every year. Nearly one in five Americans between 16 and 64 used an illegal drug in 2013. Now a lot of that was probably pot, but one in 20 was illegal opioids, so we’re still enjoying some of the hard shit.
America leads the world in illicit drug use, nearly 5 percent ahead of Australia and Spain and 6 percent ahead of Canadians, who have to use cocaine just to survive their winters and smoke pot to freshen a room when Febreze is unavailable.
Turns out the U.S. also spends about $50 billion a year fighting the war on drugs, meaning the entire drug industry is a money pit that we’re throwing our cash into before adding a flaming turd strapped to a tank of gasoline. $50 billion is higher than the GDP of 109 countries in the world including Croatia, Lithuania, and Iceland. Poor, innocent Iceland! That’s a lot of PSAs about cracking eggs and brains and shit.
honestly i think one of the biggest reasons i hated season 2 is cause season 1 seemed to give off the idea that a bond with a lion was incredibly rare and special and one in a trillion and replacing a paladin is almost impossible and season 2 made them seem just?? a dime a dozen???? like completely interchangeable, like almost anyone could be a paladin of voltron and it just made me so. weird feeling….
I wonder how many of you know the name of Rafael Cordero? In the 18th to 19th century, education was not seen as the necessity it is today; rather, it was something for the upper classes. All schools were private or in the hands of the Church. In Puerto Rico, this was no different. But a man named Rafael Cordero understood the value of education, and how it can free the common people from the shackles that society imposed on them.
A child of poverty, Rafael’s family had no material wealth. Rafael could not legally go to school because he was black. That’s right, the color of his skin was as great an obstacle for his formal education as was his family’s lack of funds. His parents, however, knew they wanted their son to succeed, so they taught him as much as they could. From his parents. Rafael learned to read.
Rafael took to reading as many books as he could. A self-taught man, his dedication to his learning gained him an enviable amount of knowledge, which he knew he needed to share with others. In the year 1810, at merely 20 years old, Rafael Cordero turned his house into a school, where he taught the children of those whom society would otherwise turn away: the poor, the blacks, and the girls.
Rafael Cordero didn’t charge for his lessons; his school was free for all who wanted to learn. His many, many students include Alejandro Tapia y Rivera, (aka the Father of Puerto Rican Literature), Ramon Baldorioty de Castro (Puerto Rican politician and strong advocate for the abolition of slavery), Jose Julian Acosta (another strong advocate for abolitionism), Manuel Elzaburu (founder of the Puerto Rican Atheneum) and many, many more. Without Rafael Cordero, these men would most likely live their lives in poverty and/or ignorance.
The advancement of society cannot be done without an educated populace. But what happens if a large number of said populace is denied access to education? Society, invariably, stagnates and worsens. Crime rises, violence rises, and knowledge shrinks. To deny education to such a large portion of the population as the poor, on the basis of making it more expensive than they can afford, is to reject valuable minds that could otherwise greatly contribute to society.
We live in a world where education is, quite literally, easier to access than ever. The Internet stores far more knowledge in one website (of literally TRILLIONS) than any library in the history of the World. A single computer, hell a CELLPHONE, can access far more information in one hour than our grandfather’s could access in ten!
But we live in a world where education has become a commodity to be sold. Colleges that CLAIM to value knowledge throw away students, eager to learn, on the basis that they cannot afford the outrages prices they set. A single class can cost hundreds of dollars! And that’s not even getting into the books required for purchasing! Books with knowledge you can access on the Internet for free!
In the 220 years since Rafael Cordero’s birth, the state of education has not changed at all. It is STILL a for profit system that can only be accessed by the wealthy. But 220 years ago, society was very different. You could get a job in a factory and get by; not so much today. We live in a time where a diploma is a necessity. You can’t even work at McDonald’s without a GED! McDonald’s! And forget about a cushy office job, they won’t take anyone without a BA! I know because I checked!
In the year 1810, 207 years ago, Rafael Cordero dared to give the poor and the marginalized a free education. His work produced some of the most brilliant people my little homeland has ever seen, and inspired hundreds more TO THIS DAY. Imagine, what can be achieved in this day and age with a similar system? I dare all who follow this blog, and all who reblog this post, to imagine a world where even the poorest child has access to the same quality education as the richest. What will change?
The rarest possible instance in pokemon (via EnixLeDerp on reddit)
The rarest thing is probably encountering a horde of 5 shiny Spinda with identical spot patterns with perfect IV’s, same gender, a hidden ability, the same nature, and all with Pokerus, which is a 1 in 1.166516e+120 chance of happening.
To see that as a full number, that’s a 1 in 1,166,516,000,000,000,512,216,872,712,104,384,496,808,632,888,240,896, 408,176,648,456,104,152,960,072,944,640,808,264,456,544,600,392,064, 040,352,200,480,240,248 chance of happening.
In words, thats a one in one novemtrigintillion, one hundred and sixty-six octotrigintillion, five hundred and sixteen septentrigintillion, five hundred and twelve tretrigintillion, two hundred and sixteen duotrigintillion, eight hundred and seventy-two untrigintillion, seven hundred and twelve trigintillion, one hundred and four novemvigintillion, three hundred and eighty-four octovigintillion, four hundred and ninety-six septenvigintillion, eight hundred and eight sexvigintillion, six hundred and thirty-two quinvigintillion, eight hundred and eighty-eight quattuorvigintillion, two hundred and forty trevigintillion, eight hundred and ninety-six duovigintillion, four hundred and eight unvigintillion, one hundred and seventy-six vigintillion, six hundred and forty-eight novemdecillion, four hundred and fifty-six octodecillion, one hundred and four septendecillion, one hundred and fifty-two sexdecillion, nine hundred and sixty quindecillion, seventy-two quattuordecillion, nine hundred and forty-four tredecillion, six hundred and forty duodecillion, eight hundred and eight undecillion, two hundred and sixty-four decillion, four hundred and fifty-six nonillion, five hundred and forty-four octillion, six hundred septillion, three hundred and ninety-two sextillion, sixty-four quintillion, forty quadrillion, three hundred and fifty-two trillion, two hundred billion, four hundred and eighty million, two hundred and forty thousand, two hundred and forty-eight chance of happening. You’re more likely to win the lottery one milion billion trillion quadrillion quintillion sextillion septillion times.
You’re more likely to guess what atom someone has chosen throughout all of the entire universe than this happening.
A/N: *distant team gtnw screaming* Oh, it’s no big deal, everything’s fine we’re calm we’re cHILL.
TODAY IS THE DAY. THE LAST DAY OF 12 DAYS. CAN YOU BELIEVE IT? Honestly, thank you so much to every single one of you that has made this such a fun, albeit #painful, ride. We genuinely can’t tell you how much we appreciate your indulgence in our love for this universe and your super kind words about each and every thing we post like WOW WE DON’T DESERVE YOU.
And guess what?! Your patience is about to pay off because PART THREE IS COMING AT YA TOMORROW, Y’ALL. GET YOURSELVES READY (you’re not ready) BECAUSE HERE WE GO.
So… it is with great excitement (and a few tears) that we present DAY TWELVE.
Word Count: 2,175
“Seniors! Seniors! Seniors! Seniors!”
Everyone was shouting in the hallway after being released from the gym post-student assembly, and you and Lin were desperately trying to escape the crowd, holding onto each other as both of you scaled the very edge of the hallways.
“This way,” he pointed towards a less populated route and you trailed right behind him, fingers still laced with his.