If you are reading this, you are most likely a physicist, which means that you are also a mathematician. So it may interest you to know that, at the time of writing, we have just passed Pi Day! Note, that"s Pi without an e, although, apparently, one of the ways people celebrate the international day of the number "π" is by eating actual pies - enough to convert even Homer Simpson to the wonders of maths! Pi Day is suitably...