The day started with the human formation of the Pi symbol
with the participation of the entire school.
Mr Rhun ap Iorwerth said "they are fascinating posters and they give a good insight into Wales and the Welsh people's contribution in various fields." Amongst the facts are: Everest was named after George Everest from Powys; The pi symbol
was created by William Jones from Anglesey; The men and women's goalkeepers for Wales are former pupils of Ysgol David Hughes; Tom Parry Jones from Carreglefn was responsible for the first electronic breathalyser.
Florida-based Proton 3D Studio offers a little kitsch with a Pop Art-like plastic Pi symbol
($21) and the word "geek'' crafted in orange plastic script lettering ($24).
Wales has a proud history of creativity, discovery and innovation: A Welsh mathematician conceived the use of the pi symbol
; a Welsh mathematician devised the equals sign; a Welshman co-invented the microphone, teleprinter and crystal radio; a Welsh physicist conceived the first fuel cell.
The area is a stronghold of former Minister Sleiman Franjieh, whose Marada Party's green pi symbol
can be seen on flags draping from windows and in dripping spray-paint on walls.
22 Squadron, "Badge: A black pi symbol
in front of a white Maltese cross on a red circle.") There is also a table of historic aircraft in foreign markings (generally museum artifacts).
They are the diarist William Bulkely and the mathematician William Jones, a fellow of the Royal Society and the first to use the pi symbol
to represent the universal constant.