3.1415 is the start of the famous number. Although today is not officially pi there are chances to get souvenirs for other caches so why not come along and have a piece of pie.
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.
We are meeting at a local charity eatery, either on the benches outside or if cloudy inside so why not come along and celebrate.