Saturday, 14 March 2015

Pi Day 2015

March 14, 1915 at 9:26:53 will be epic: 
 3.141592653 = Pi

Wil Wheaton Reads Pi
You might want to start the above reading and then
continue to peruse the remainder of this blog?

1. Discovery of pi

The ancient Babylonians knew of pi's existence nearly 4,000 years ago. A Babylonian tablet from between 1900 and 1680 B.C. calculates pi as 3.125, and the Rhind Mathematical Papyrus of 1650 B.C., a famous Egyptian mathematical document, lists a value of 3.1605. The King James Bible (I Kings 7:23) gives an approximation of pi in cubits, an archaic unit of length corresponding to the length of the forearm from the elbow to the middle finger tip (estimated at about 18 inches). The Greek mathematician Archimedes (287-212 B.C.) approximated pi using the Pythagorean theorem, a geometric relationship between the length of a triangle's sides, and the area of polygons inside and outside of circles.

2. There's a pi "language"

Literary nerds invented a dialect known as Pilish, in which the numbers of letters in successive words match the digits of pi. For example, Mike Keith wrote the book "Not a Wake" (Vinculum Press , 2010) entirely in Pilish:

Now I fall, a tired suburbian in liquid under the trees, Drifting alongside forests simmering red in the twilight over Europe.

("Now" has three letters, "I" has one letter, "fall" has four letters, and so on.)

3. Memorizing pi

Number enthusiasts have memorized many digits of pi. Many people use mnemonic techniques, known as piphilology, to help them remember. Often, they use poems written in Pilish (in which the number of letters in each word corresponds to a digit of pi), such as this excerpt:

How I want a drink, alcoholic of course, after the heavy lectures involving quantum mechanics.

The record for the most digits of pi memorized belongs to Chao Lu, of China, who recited pi from memory to 67,890 places in 2005, according to The Guinness World Records.

4. Pi-ramid at Giza

The publisher and writer John Taylor first proposed the idea that Egypt's Great Pyramid at Giza, built around 2589 to 2566 B.C., was designed based on pi. Taylor found that dividing the perimeter of the pyramid of its base by its height produces a number that is close to 2*pi. Other people have since made the link between the Great Pyramid and pi as well, although it may not have been intentional. 5. Computing pi It's easy to calculate pi by measuring the circumference, or the distance around the edge of a circular or curved object, and the diameter of several circles, and computing the slope (circumference divided by diameter). Computers can get even more accurate measurements. As of December 2013, according to, computers calculated pi to a record 12 trillion digits.

The above 3 cartoons Via:  Science Jokes Daily

 Via:  Far Left Side


Pi Cuff Links for that Special Man in your Life

Tit for Tat:  A Pi Bracelet for that discerning Woman

Pi Wrapping Paper - You'll Need That!

And of course... a Pi Cake Mold

And a Pi Ice Cube Tray
 And to add up how much all the above costs, Pi pencils!

Our personal favourite:  A Pi Pizza Cutter
Where you buy all the above is beyond us. 
Hey!  Look it up on the web!