Zamenhof-Esperanto object of 1044 Zamenhof-Esperanto objects in 54 countries") and until his death in 2001 he listed a total of 1260 such objects. It is he who coined the acronym "ZEO". Currently, Robert Kamiński of Poland is the person charged with the registration of ZEOs by the Universal Esperanto Association. The highest number of ZEOs per country is situated in Brazil. In Poland, the birthplace of Esperanto, there are more than a hundred of them. Zamenhof-Esperanto object A Zamenhof-Esperanto object (, ZEO) is a monument or a place linked to L. L. Zamenhof, the constructed language Esperanto he created and first published
Ludwik Leibler Engineering, recipient of CNRS Silver Medal, France IBM Prize in Material Science, the Polymer Physics prize of the American Physical Society (2006) and the Polymer Chemistry Award of the American Chemical Society (2007). Ludwik Leibler Ludwik Leibler, born in 1952 is a Polish physicist. He is Professor of École supérieure de physique et de chimie industrielles de la ville de Paris (ESPCI ParisTech) and member of the National Academy of Engineering. Ludwik Leibler received his PhD in 1976 in Theoretical Physics from Warsaw University, and then spent two years as a post-doctoral fellow at the Collège de France in Paris