Product Idea |

# The Number Pi

• Originality: How original is this - never seen before?
• Building Techniques: How much skill do you think the creator of this MOC has, in terms of building technique?
• Details: Express how much you like the details of the build.

Your feedback is only shown to the creator as well as yourself. It is not available for other users to see. The creator won't see your user name.

Last Updated . Click "Updates" above to see the latest.

The number π (spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although fractions such as 22/7 are commonly used to approximate it.

History
For thousands of years, mathematicians have attempted to extend their understanding of π, sometimes by computing its value to a high degree of accuracy. Ancient civilizations, including the Egyptians and Babylonians, required fairly accurate approximations of π for practical computations. Around 250 BC, the Greek mathematician Archimedes created an algorithm to approximate π with arbitrary accuracy. In the 5th century AD, Chinese mathematicians approximated π to seven digits, while Indian mathematicians made a five-digit approximation, both using geometrical techniques. The first computational formula for π, based on infinite series, was discovered a millennium later. The earliest known use of the Greek letter π to represent the ratio of a circle's circumference to its diameter was by the Welsh mathematician William Jones in 1706.

The build
I wanted to build the Greek letter π in Lego on a circle with some decimal digits of the number π around it. The number of digits after the decimal point turned into 15 in this build because I thought it looked nicest. The number of bricks used = 818.

I think this could be a wonderful Lego set because the number Pi is very important and it is a nice way to celebrate Pi day (March 14/3.14). It would also make a nice display model for classrooms or a gadget for math enthusiasts. You can either put π on the disk upright or attach it flat to the disk to hang it up.

## More To Do

Opens in a new window