Yesterday was the PI Day, as every March, 14 day is, every year. But yesterday was special because the year we are in is 2015. The English spoken world spells the year as "15". So, writing the day, today, we have 3.14.15. Coincidentally, 15 are the following decimals after 14, "3.14" being the general and the most often used abbreviation of what "Pi" represents. [source: Pinterest] First nine decimals of π can be represented by just giving the exact date and time at nine twenty six and … [Read more...]