# NASA’s 10 Ways to Celebrate Pi Day on March 14

On March 14, NASA will be part of folks throughout the U.S. as they have fun an icon of nerd tradition: the quantity pi. So well-known and beloved is pi, additionally written π or 3.14, that it has a nationwide vacation named in its honor. And it’s not only for mathematicians and rocket scientists. Nationwide Pi Day is broadly celebrated amongst college students, lecturers and science followers, too. Learn on to discover out what makes pi so particular, the way it’s used to discover house and how one can be part of the celebration with sources from NASA.

Pi, additionally written π, is the Swiss Military knife of numbers. Regardless of how large or small a circle – from the scale of our universe all the best way down to an atom or smaller – the ratio of a circle’s circumference (the gap round it) to its diameter (the gap throughout it) is all the time equal to pi. Mostly, pi is used to reply questions on something round or spherical, so it comes in handy especially when you’re dealing with space exploration.

For simplicity, pi is usually rounded to 3.14, however its digits go on without end and don’t seem to have any repeating patterns. Whereas folks have made it a problem to memorize record-breaking digits of pi or create pc applications to calculate them, you actually don’t want that many digits for many calculations – even at NASA. Here’s a JPL engineer on how many decimals of pi you need.

Pi pops up in every little thing from rocket-science-level math to the stuff you be taught in elementary college, so it’s gained a kind of cult following. On March 14 (or 3/14 in U.S. date format) in 1988, a physicist on the San Francisco Exploratorium held what is assumed to be the primary official Pi Day celebration, which neatly included the consumption of fruit pies. Math lecturers shortly realized the potential advantages of instructing college students about pi whereas they ate pie, and all of it caught on a lot that in 2009, the U.S. Congress formally declared March 14 Nationwide Pi Day. Here’s how to turn your celebration into a teachable moment.

House is filled with round and spherical options, and to discover them, engineers at NASA construct spacecraft that make elliptical orbits and guzzle gasoline from cylindrical gasoline tanks, and measure distances on round wheels. Past measurements and house journey, pi is used to discover out what planets are fabricated from and the way deep alien oceans are, and to research newly found worlds. In different phrases, pi goes a long way at NASA.

No Pi Day is full and not using a little downside fixing. Even the math-averse will discover one thing to love about this illustrated math challenge from NASA that options actual questions scientists and engineers should reply to discover and research house – like how to decide the scale of a distant planet you’ll be able to’t truly see. 4 new issues are added to the problem every year and solutions are launched quickly after after Pi Day.

For lecturers, the query is just not *whether or not* to have fun Pi Day, however *how* to have fun it. (And the way a lot pie is an excessive amount of? Reply: The restrict doesn’t exist.) Fortunately, the NASA-JPL Schooling Workplace has an (*10*) with all of its “Pi within the Sky” math problem questions for grades 4-12. Every lesson features a description of the real-world science and engineering behind the issue, an illustrated handout and reply key, and an inventory of relevant Widespread Core Math and Subsequent Technology Science Requirements.

In a method, we have fun Pi Day daily by utilizing pi to discover house. However in our free time, we’ve been recognized to make and eat space-themed pies, too! Share your personal nerdy celebrations with us here.

The fascination with pi, as nicely its reputation and accessibility have made it a go-to math reference in books, films, and tv. Ellie, the protagonist in Carl Sagan’s e-book “Contact,” finds a hidden message from aliens within the digits of pi. Within the unique “Star Trek” collection, Spock commanded an alien entity that had taken over the pc to compute pi to the final digit – an not possible activity on condition that the digits of pi are infinite. And writers of “The Simpsons,” a present recognized for referencing math, created an episode by which Apu claims to know pi to 40,000 digits and proves it by stating that the 40,000th digit is 1.

Calculating file digits of pi has been a pastime of mathematicians for millennia. Till the 1900s, these calculations had been executed by hand and reached data within the 500s. As soon as computer systems got here onto the scene, that quantity jumped into the hundreds, hundreds of thousands and now trillions. In 2019, Google developer Emma Haruka Iwao broke the file held by scientist and pi fanatic Peter Trueb by calculating pi to 31 trillion digits – 31,415,926,535,897 digits to be actual.

The file for the opposite favourite pastime of pi fanatics, *memorizing* digits of pi, stands at 70,030.

As passionate as individuals are about pi, there are some who consider issues can be an entire lot higher if we changed pi with a quantity known as tau, which is equal to 2π or 6.28. As a result of many formulation name for 2π, tau-enthusiasts say tau would offer a extra elegant and environment friendly method to specific these formulation. Yearly on Pi Day, a small debate ensues. Whereas we received’t take sides, we are going to say that pi is extra broadly used at NASA as a result of it has purposes far past geometry, the place 2π is discovered most frequently. Maybe most essential, although, for pi- and pie-lovers alike is there’s no scrumptious homonym for tau.