ABSTRACT
This chapter describes the National Bureau of Standards’ A Practical Josephson Voltage Standard at One Volt, relating the context in which the publication appeared, its impact on science, technology, and the general public, and brief details about the lives and work of the author. A Practical Josephson Voltage Standard at One Volt describes the revolutionary one-volt Josephson-junction array standard. National Institute of Standards and Technology (NIST) changed forever high-accuracy voltage measurements with this development, which built on earlier work at NIST and a microwave feed design from the then West German standards laboratory, Physikalisch-Technische Bundesanstalt (PTB). As developed and demonstrated by the NIST team, a Josephson-junction-based voltage standard system consists of microwave source and feed, cryostat, probe, chip, and readout and control system. Microwave energy is fed into the chip mounted in the probe's chip carrier and cooled by liquid helium.
