Chamblee54

Pie Day

Posted in GSU photo archive, Holidays by chamblee54 on March 14, 2014

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Today is 3-14. It is a monday, and 314 are the first three digits of pi (affectionately known as π ). It is a math thing, the number you multiply a diameter by to get the circumference. When your grammar school math teacher told you about π, she probably used 3.14, or 3 1/7. (PG went to school when Hewlett and Packard were still in the garage.)

You might also have heard the formula for the area of a circle, the racy π r squared . This means that you multiply π by the radius ( half the diameter, a line from the border to the center point), and then multiply the whole contraption by the radius again. The formula has a funny sound to it. Pie are not square, cornbread is square, pie are round. Like Sly Stone says, all the squares go home.

According to wikipedia, π seems to have been known as early as 1900 b.c. The pyramids of Egypt have a π based feature. The Greek letter π is the first letter of the Greek word περίμετρος (perimeter) . This was determined OTP.

The pyramid- π function is fairly simple. The total length of the four sides, at the base, will be the same as the height of the pyramid, times two, times π. PG likes to make model pyramids. They are 6″ tall, and the base sides are 9 3/8″. The combination of these four sides is 37 1/2″. If you multiply 6x2x3.14, you get 37.68″ The .18″ is because of a measuring error.

A lady named Eve Astrid Andersson has a page of her website dedicated to π. The only trivia question that PG understood was the first one…1. What is the formal definition of pi? …the ratio of a circle’s circumference to its diameter // 3.14159 // the radius of a unit circle // the surface area of a sphere of diameter 22/7 // a delicious dessert, especially if it contains cherries.

There is the football cheer from M.I.T. ” Cosine, secant, tangent, sine 3.14159 // Integral, radical, u dv, slipstick, slide rule, MIT!”

In 1998 a movie titled π was released. It caused brain damage in 3.14% of those who saw it. Perhaps it is not a coincidence that 1998 = 666 x 3.

π has been calculated to over five million digits. The second part of this feature are a few of those numbers. There are 82 characters in each line. This feature shows π extended to 10,165 digits. This is .02% of five million. The pictures today are from ” The Special Collections and Archives,Georgia State University Library”. This is a repost.

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3 Responses

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  1. Ultimate Pie Day | Chamblee54 said, on March 13, 2015 at 11:46 pm

    […] ” The Special Collections and Archives,Georgia State University Library”. This is the annual repost of the π day feature. Today is the ultimate π day. It is 03-14-15. The magic moment is at […]

  2. Pie Day | Chamblee54 said, on March 13, 2016 at 11:32 pm

    […] each line. This feature shows π extended to 10,165 digits. This is .02% of five million. This is a repost, with pictures from “The Special Collections and Archives, Georgia State University […]

  3. π Day | Chamblee54 said, on March 14, 2017 at 9:04 am

    […] each line. This feature shows π extended to 10,165 digits. This is .02% of five million. This is a repost, with pictures from “The Special Collections and Archives, Georgia State University […]


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