pi pattern in white on blue tie

pi pattern in white on blue tie is a cool tie for math lovers who are fascinated with the pi symbol.A cool symbol with easy to customise background colour,if desired.Pi is a name given to the ratio of the circumference of a circle to the diameter. That means, for any circle, you can divide the circumference (the distance around the circle) by the diameter and always get exactly the same number. It doesn't matter how big or small the circle is, Pi remains the same. Pi is often written using a greek symbol and is pronounced "pie", just like the dessert.