Institute of Solid State Physics is one of the physical institutes at the Bulgarian Academy of Sciences, currently known as the Georgi Nadjakov Institute of Solid State Physics. It provides scientific background of solid state electronics and optics in Bulgaria. Some reports and discussions are referred to below. History Decree No 362 of 16 October 1972 by the Ministry Council of Bulgaria established the Institute of Solid State Physics as a successor of the Institute of Physics with Atomic Scientific Experimental Base at the Bulgarian Academy of Sciences, founded by Georgi Nadjakov in 1946. Since 16 February 1982 the Institute of Solid State Physics accepted the name "Georgi Nadjakov Institute of Solid State Physics". Milko Borissov professor, member of BAS is the first Director and creator of the Institute of Solid State Physics (1973–1991). Nikolay Kirov, professor, D.Sc. is the second Institute Director (1991–1999). Alexander G. Petrov, Professor, D. Sc., member of BAS was director till 2015. Currently, the director of the Institute is professor Doctor of Sciences Hassan Chamati. Museum The Museum on the History of Physics in Bulgaria emerged in the early 1980s, when in the Institute of Solid State Physics under the guidance of Milko Borissov began documentary research on the history of physics in Bulgaria. He works with Christina Stoycheva, Penka Lazarova, and Marko Gerdjikov. Together with Vladimir Kusev and Alexander Vavrek he created Georgi Nadjakov's room museum, started by a decision of the Board of Directors of the Institute of Solid State Physics – BAS (Protocol 7 of 26 March 1981). Museum curators are Vladimir Kusev (1981–1983) and Dr. Alexander Vavrek (1983–2000). Part of the collected sources are exhibited in the National Polytechnic Museum in Sofia from 12 to 30 November 1987. Since 2000 the Georgi Nadjakov's Museum become "Museum on History of Physics in Bulgaria" with a decision of the Scientific Council of ISSP - BAS (Protocol 22 of October 26, 2000). It is produced and adopted Rules of Procedure of the Museum (March 12, 2001). The Museum organizers are the Union of the Physicists in Bulgaria, the Sofia branch of the Union of Physicians, and Physical Section of the Union of Scientists in Bulgaria. Permanent exhibition dedicated to Georgi Nadjakov was established in 2006 and open to visitors. Georgi Nadjakov's Documentary Fund has created as a result of donation his daughter Dr. Elka Nadjakov family and his son Emil Nadjakov. The museum store