Information about the History and the Activities of the Physikalische Gesellschaft zu Berlin The content of the article was presented at the conference Ewald von Kleist contribution and its consequences to the development of science held on the occasion of the European Physical Society Historic Site inauguration in Kamień Pomorski – Pobierowo, Poland, in October 2013 by Prof. Michael Müller-Preußker, Chairman of the Physikalische Gesellschaft zu Berlin from April 1st, 2012, to March 31st, 2014. | ||