Pi Facts: 3/5/15

We have one fact and one amusing story for you today. First, the fact…

In the last Pi Fact post we mentioned Plato’s fairly accurate approximation for pi (\( \sqrt{2}+\sqrt{3}\)). The Babylonians and Egyptians too had their own approximations. By 2000 B.C., Babylonians established the constant circle ratio as \(3\frac{1}{8}= 3.125\). The ancient Egyptians arrived at a slightly different value of \(3\frac{1}{7} \approx 3.143\).

Okay, now on to our pi story, courtesy of Prof. Diesl. You must take 3.14 minutes of your day to read this story. It’s about a physician who, in 1897, tried to get Indiana’s state government to pass a bill recognizing his “proof” that the circle can be squared (i.e., that one can construct a square with the same area as given circle using only a compass, straightedge, and a finite number of steps). Here’s the full (short) story:

http://www.agecon.purdue.edu/crd/localgov/second%20level%20pages/indiana_pi_story.htm

Only 9 more days to “epic Pi Day!”

 

Posted in Uncategorized | Leave a comment

Pi Facts: 3/2/15

We have 3 pi facts for you today. Enjoy!

1. Albert Einstein (you know, the physics guy) was born on … Pi Day! (His birth date is 3/14/1879.)

2. Did you know that pi wasn’t always \(\pi\)? William Jones (1645-1749) introduced the  “\(\pi\)” symbol in 1706, and it was later popularized by Leonhard Euler (1707-1783) in 1737.

3. Plato (427-348 B.C.) supposedly obtained a fairly accurate (for his day) value for \(\pi\): \[\sqrt{2} + \sqrt{3} \approx 3.146.\]

Posted in Pi Day | Leave a comment

Pi Facts: 2/26/15

In 1995, Hiroyoki Gotu memorized 42,195 places of pi and is considered the current pi champion. (EDIT: Thank you to Prof. Diesl for pointing out that as of 2005 the current champion is Chao Lu, who memorized 67,890 digits of pi!)

Some scholars speculate that Japanese is better suited than other languages for memorizing sequences of numbers. What do you think? Do you speak any languages you think make it easier to memorize sequences of numbers? 

Posted in Pi Day | 1 Comment

The One Pi Day To Rule Them All…

This year’s Pi Day will be epic. That’s because on 3/14/15, 9:26 and 53 seconds, we’ll have lived through the first 9 digits of Pi…in order! (But why stop there? If time is a continuous quantity, won’t we pass through ALL of the digits in Pi shortly after that time?)

To celebrate this once-in-a-lifetime event we, the math department, are throwing a party. We’re bringing pies, bagels, and just about every other circular food item we can find. We’re also having t-shirts made. So, get ready, get pumped, and start your counters. Here are the details of the party (click to enlarge).

Poster1

In the meantime, leave a comment below and tell us your favorite fun-fact about Pi.

 

Posted in Pi Day | Leave a comment