sábado, 11 de octubre de 2008

Arago Medallions


The Paris Meridian Line lost out to Greenwich as the Prime or Zero Meridian, the datum for all measurements of longitude. It was established in 1667 and revised/extended several times, most famously by François Arago. To commemorate Arago an 'invisible monument' was created by Dutch artist, Jan Dibbets, in 1994/95. Ostensibly it consists of 135 bronze medallions.