Happy Pi Day!!!

Pi Pie ready for baking

Pi Day is traditionally held on 14th March to celebrate the irrational number π - 3.14159265.  π is the ratio between the circumference : diameter of a circle and cannot be expressed as an exact fraction.  It is also a transcendental number.  I have often thought long and hard about these kinds of numbers and they fascinate me.  It is truly amazing that no matter how accurately you try to express a number like π, it can always be expressed to an even greater accuracy again.  It makes you wonder… what is the smallest fraction possible in nature? Surely there must be one? Yet π can be calculated to an indefinite decimal representation, it would seem.  This means that in nature there can never be a “perfect” circle.