Before revision: The persistent current was first identified by Onnes, and attempts to set a lower bound on their duration have reached values of over 100,000 years.File J, Mills, R Physical Review Letters 1963 In resistive conductors 250px|Persistent current schematic.
After revision: Heike KamerlinghThe persistent current was first identified by Onnes, and attempts to set a lower bound on their duration have reached values of over 100,000 years.File J, Mills, R Physical Review Letters 1963 In resistive conductors 250px|Persistent current schematic.