Rostock 2019 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

SYSI: Symposium Fundamental Constants and new SI

SYSI 1: Fundamental Constants and new SI

SYSI 1.2: Invited Talk

Wednesday, March 13, 2019, 11:00–11:30, U Audimax

Quantum Hall effect and the new SI — •Klaus von Klitzing — Max Planck Institute for Solid State Research, Stuttgart, Germany

The delegates of the 26th General Conference on Weights and Measures recommended a revised international system of units based on fixed values for constants of nature. Beside the velocity of light which was fixed already in 1983, also the elementary charge e and the Planck constant h will adopt fixed values on 20.5.2019, when the new SI will be introduced worldwide. This development was strongly influenced by electrical quantum standards and the talk will summarize the impact of the quantum Hall effect on metrology.