| 1. | In 1937, the president of the International Bureau of Weights and Measures, Pieter Zeeman, named him secretary of that bureau, a post that would occupy him between 1937 and 1941, and he went to live to Paris.
En 1937, Pieter Zeeman, président du Bureau des poids et mesures, le nomme secrétaire, poste que, revenu s'installer à Paris, il occupe jusqu'en 1941. |
