The Fundamental Electrical Measurements (FEM) group at NIST is responsible for maintaining the nation’s electrical measurement standards. They use quantum invariants and ultra-precision techniques to create experiments that serve as the national standards for the ohm and farad. These experiments are based on the defining constants of the new SI system.
FEM researchers aim to improve the accessibility, reliability, precision, accuracy, and range of values achievable from each standard by advancing optical, mechanical, and electrical systems used in their realization. Their work provides the fundamental traceability of SI units through the exact values of quantum electrical constants.
Source: https://www.nist.gov/pml/quantum-measurement/fundamental-electrical-measurements
Keywords: ultra-precision, quantum electrical, fundamental constants, mechanical systems, electrical systems
