Know It All: The Origins of Pi

You probably remember pi from 7th grade math class as a magical number discovered hundreds of years ago used for calculations involving circles... But why the symbol? Who discovered pi? How many digits are there?

Everybody has that moment when they realize they don’t know about something that they should probably know about. Whether it’s history, language, science, or cultural phenomena, you’ve felt the stinging personal embarrassment of a moment wherein you realize there’s some common knowledge that isn’t so common. Don’t feel bad; nobody knows everything. Nobody, that is, except me and my sidekick, The Internet!

Somewhere in the world, a confused soul must know more about…

The Origins of Pi

Most everyone knows π as ‘3.14’ – a number that only serves a purpose when you’re doing some sort of math calculation involving a circle (and just in case you’ve forgotten the most elementary application of the figure: pi is the ratio of a circle’s circumference to its diameter).

However, beyond its decimal notation and funny little symbol, the average person (myself very much included) doesn’t know much about the number’s name, details, or history. When was it first recognized as a go-to magic figure? Who determined that we should dub it “pi”? To how many decimal places has it been graphed? That little squiggly table-looking mark has some explaining to do.

The earliest legitimate reference to what we now know as pi belongs to Greek mathematician/all-around genius Archimedes (nobody can really agree on an exact date for this specific discovery, only that it happened somewhere in the guy’s 75 years of life between 287 and 212 BC), who finally decided on a concrete number after working with polygons in conjunction with circles to make an estimate (give him a break, there wasn’t much to do, back then). Ol’ Death Ray landed on pi being somewhere between the numbers [223/71] and [22/7], which was – you guessed itabout 3.1418. Pi graphing breakthroughs in India and China followed in the next 500 years… it was all very nerdy.

The symbol “π” and the term “pi” come from the Greek alphabet, where “π” is merely the old school version of “p”; these titles were slapped onto the 3.14 mathematical constant in the early 18th century by mathematician William Jones, who merely used “pi” as an abbreviated form of “perimeter” (because of the number’s connection to circles and circumference and all).

Oh, and as for the most graphed digits of pi? The current record stands at 2,576,980,370,000 decimals. Yeah. Seriously.

Now you know.

Justin Brown is an artist and writer living in Virginia. He channels most of his enthusiasm into making things for his online art shop, Artness! by Justin Brown. You can keep up to date with him, his worldly adventures, and his dogs by following him on Instagram and on Facebook

62 Comments

  • Reply November 10, 2009

    jack

    For an awesome movie that involves Pi but doesn’t really have all that much to do with math, see π by Darren Aronofsky.


    .-= jack´s last blog ..Honor and Ethics: Does America Need a “Lending Code?” =-.

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  • Reply September 13, 2012

    Pawan

    Its good for students

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  • Reply January 27, 2016

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    दोस्त को दोस्त का इशारा याद रहेता हे,
    हर दोस्त को अपना दोस्ताना याद रहेता हे,
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    वो अफ़साना मौत तक याद रहेता हे|

  • Reply January 31, 2016

    Jonah

    Thanks! Had to learn about this for my honors physics class. =)

  • Reply July 10, 2017

    khari

    Archimedes did not invent pi…it was around long before he used it in his equations….

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