Fabien Gregis (Cohn Institute, Tel Aviv University)
The successive discoveries of the Josephson effect (1962) and the quantum Hall effect (1980) revolutionized electrical measurements and opened the era of quantum electrical metrology. It enabled physicists to perform much more accurate measurements by designing new ad hoc electrical standards, which were commonly adopted by convention in 1990. However, by doing so, electrical metrology stepped away from the International System of Units (SI), only to rejoin it with the upcoming SI reform. This presentation explores the epistemological issues related to the adoption of the quantum electrical units and their justification.
