During the last few years much interest has been felt in the reduction to an absolute standard of measurements of electromotive force, current, resistance, etc. and to this end many laborious investigations have been undertaken.
Sa panahon ng huling ilang taon na maraming interes na ito ay nadama sa pagbawas sa isang absolute na pamantayan ng measurements ng elektromotibo lakas, kasalukuyang, paglaban, atbp at sa dulo na ito ng maraming mga matrabaho pagsisiyasat ay nagtangka.