Thursday, March 14, 2019, 16:00
WHGA Auditorium
Beat Jeckelmann, Federal Institute of Metrology METAS
Abstract:
In almost all areas of modern society, from science and technology to
industrial manufacturing and commerce to daily life, the International
System of Units (SI) is used to express the results of measurements in a
clear and comparable manner. With the advancement in science and
technology, the SI has to evolve and adapt to the needs of users. The
major revision, approved in November 2018 by the General Conference on
Weights and Measures, marks a milestone in the further development of
the SI. Newly, a set of seven defining constants with fixed values
completely sets the system and forms the basis for the definition of the
units. This will assure the future stability of the SI and open the
opportunity for the use of new technologies, including quantum
technologies, to implement the definitions. Most notably, this marks the
end of the last remaining physical artefact in the SI system, the
International Prototype of the Kilogram.