(from Bulgarian Telegraph Agency (BTA), 97-01-08)

100TH ANNIVERSARY OF PATRIARCH OF BULGARIAN PHYSICS GEORGI NADJAKOV
Sofia, January 7 (BTA) - Academician Georgi Nadjakov is to be given credit for the first Bulgarian discovery of scientific significance - the photo- electret state of matter - which received international recognition already in the late 1930ies. Nadjakov's teachers were well-known scholars Marie SkoldowskaCurie and Paul Langevin. Receiving his post- graduate education at the French scientific institutes he returned to Bulgaria in 1925. Today the Bulgarian public marked Nadjakov's 100th anniversary.
In 1937 Georgi Nadjakov made his significant discovery, the photo- electret state of matter, which he explained both theoretically and experimentally. It is used in certain types of memory-storing devices and the technology for photocopying. It is well known that the photos of Mars taken by the Mariner satellite were directly transmitted to the Earth using photo- electrets.

Academician Nadjakov's discovery was a great success not only for the Bulgarian but also for the world science. Scholars from the Untied States, India, Brazil, Japan, etc. have used it for further research in the area. Academician Nadjakov founded the Institute of Physics with the National Academy of Sciences in 1946 and was its director till 1971. He was one of the founders of Pugwash movement and was an honorary chairman of the World Peace Council.