These films were the records of paricle tracks with an bubble chamber registrated in 1968 at CERN
collisions took place each 10 seconds - historic material -
now data is taken in CMS with a rate of 40 000 000 / second
not on Ar film ;)
Follow also the OURconCERN blog of this workshop :
To raise all senses before entering the cathedrals of modern science the CMS
caverns and halls in Cessy France we visit on other interesting art space in neighbouring
village Gex.