**MARCH 14th (3-14)**

The number Pi (π) is a mathematical constant describing the ratio of a circle’s circumference to its diameter, approximately equal to 3.14.

It is commonly used in formulas for geometry and trigonometry; it is also an important constant in many scientific fields, ranging from mathematics to thermodynamics to cosmology.

Pi is an irrational number, meaning it cannot be expressed exactly in the form of a common fraction. This also means that its decimal representation is infinitely long.

**PI Facts**

**DISCOVERY**

Approximations of π have been found in ancient texts from Egypt and Babylon, dated between 1900 - 1600 BC, or 4,000 years ago.http://en.wikipedia.org/wiki/Pi#History

**GREAT PYRAMID OF GIZA**

It has been theorized that he Great Pyramid of Giza, built in approximately 2500 BC, was designed based on π. The pyramid’s height is close to 2π times its height.

http://en.wikipedia.org/wiki/Great_Pyramid_of_Giza#History_and_description

**COMPUTING**

**MEMORIZATION**

Chao Lu from China currently holds the Guinness World Record for correctly reciting π to an amazing 67,890 digits. The attempt took over 24 hrs to complete.

http://www.guinnessworldrecords.com/world-records/1/most-pi-places-memorised

*Pi Day recognizes the significance of this fascinating number, and is celebrated by many academic institutions around the world.*

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*PERPETUAL INDUSTRIES’ **company initials equate to PI. We are an incubator for new and innovative technologies, such as the patented XYO Mechanical Balancer. Our goal is to optimize and commercialize such technologies to make **High Performance Energy Efficient Products.*

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