Louis continued to be effective on his or her atomic wall clock and by just 1964 he managed to increase the accuracy within the atomic clock from a second for 300 years one second each and every 2000 years! The ongoing success connected with Louis's work triggered the definition associated with a second to be changed by 1/864000 of a mean photo voltaic day that will being calculated when the time that took meant for 9192631770 cycles for the radiation during an atomic timepiece