Mieczysław's sons stayed in camps in Germany until the end of the war . In 1944 Mieczysław Wolfke married Krystyna Chądzyńska in Kraków. After the end of military actions, Wolfke took part in the reconstruction of Polish science. He lectured at the University of Mining and Metallurgy in Cracow and at the Gdansk University of Technology. He also was involved in the formation of the Silesian University of Technology in Gliwice. In December 1945 he returned to Warsaw where he started to organize the Faculty of Physics at Warsaw University of Technology. At the time of reconstruction of the Faculty of Physics (building was destroyed during the Warsaw Uprising) Mieczysław Wolfke was delegated to foreign scientific centers to acquire the knowledge about an actual situation of world's scientific research, an organization of institutes and also to buy a modern apparatus. 4 May 1947 Mieczysław Wolfke died suddenly in Zurich and was buried at Sihlfeld cemetery. Scientific activities Mieczysław Wolfke became interested in science at a pretty early age. In 1895 he wrote "Planetostat" – a dissertation about interplanetary communication and in 1901 – "Abstraktyka" – a philosophical dissertation about "science of science". However, these treatises were only in the form of manuscripts. In 1898 he patented in Russia and Germany a telectroscope. It was based on modified, rotating Nipkow disk, photosensitive selenium electrode and Geissler tube with brightness modulation. Wolfke was inspired by Jan Szczepanik's telectroscope (invented a few years earlier), but his project was wireless using electromagnetic waves. Two years later he devised a mathematical theory of surface displacements on a plane. His first science publication: "Electron, considered as a center of pressure in ether" was written in 1907 in Paris. In the same year he had a presentation in the Astronomical Society in Paris about the idea of a telescope with a concave mirror – it was giving larger magnification than before. In recognition the Society invited him to participate in it. After arrival to Wrocław, Wolfke invented in 1908 a cathode tube with a glass window, and in 1909 with Karl Ritzmann he patented a cadmium-mercury lamp. He later sold his rights to it to the Carl-Zeiss Jena company, where he worked for a year after obtaining his doctorate. At University of Wrocław in the Otto Lummer’s team Wolfke worked at the generalization of the Abbe’s theory of optical imaging for non-linear gratings. In 1910 he obtained