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Journal of the Bulgarian Academy of Sciences
- Year: 2024
- Number: 4
- Language: Български, English
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50 Years since the Invention of the Copper Bromide Vapour Laser in Bulgaria
Author(s): Nikola SabotinovKeywords: laser physics, gas discharge lasers, cooper vapour laser, copper bromide vapor laser, hydrogen effectAbstract: The Copper Bromide Vapor Laser (CBVL), put into operation in April 1974, is an original Bulgarian invention, created at the Institute of Solid State Physics of the Bulgarian Academy of Sciences (ISSP - BAS). The CBVL goes in the ISSP through all stages of its development: from invention through scientific research to its implementation in industrial production both in Bulgaria and abroad. This laser is a remarkable achievement in the field of quantum electronics, which has been highly appreciated by the world‘s leading scientists in the field of laser technology in the United States, Great Britain, Russia, Germany, Japan, Australia, etc. The CBVLR belong to the class of gas discharge Metal Vapor Lasers (MVL). The active medium in them are the atoms or ions of various metals. An important characteristic of MVL is their ability to emit different wavelengths located in a wide spectral range - from the deep ultraviolet to the infrared region of the spectrum and to generate powerful laser radiation in the visible range of the spectrum. The beginning of scientific research in the field of metal vapor lasers in Bulgaria was established in 1970 at the Institute of Physics of the Bulgarian Academy of Sciences (FI - BAS) on a helium-cadmium laser generating in the blue region of the spectrum.
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Gustav Weigand about Bulgaria and Bulgarian Language
Author(s): Stoyan Burov, Lilia BurovaKeywords: Gustav Weigand, Leipzig, Balkan Studies, Bulgarian Language, Institute for the Bulgarian Language (1906–1930)Abstract: Gustav Weigand is professor of Romance and Balkan linguistics and ethnography at the University of Leipzig (since 1896). He is a prominent specialist in Balkan languages and dialects: Romanian, Wallachian, Bulgarian, Albanian, Greek, etc. In 1906, he founded the Bulgarian Language Institute (Seminar for the Study of the Bulgarian Language) at the University of Leipzig. Author of a Bulgarian grammar (1907; 2nd ed. 1917), compiler of a Bulgarian-German and a German-Bulgarian dictionary, which have been repeatedly republished, first translator of Aleko‘s Baj Ganju into German. His book Ethnographie von Makedonien (1924), published as a phototype in Bulgaria in 1981, translated into Bulgarian by E. Pipileva and published in 1998, is highly popular. A great friend of the Bulgarians and Bulgaria, his activity and research in the field of Bulgarian studies are highly appreciated by our scientific and cultural community. In 1902, he was elected a corresponding member of the Bulgarian Learned Society. Gustav Weigand is the founder of a Balkanistic school of science, the focus of which, although initially the Balkan Romance dialects and languages, is invariably the Bulgarian language, in all its variety of dialects spread on the Balkan Peninsula. There are sufficient reasons to assume that the real scientific beginning of Bulgarian Balkan studies was established in Leipzig in Weigand‘s school by Weigand himself and his several Bulgarian students, among whom Stoyan Romanski played the most important role for Balkan studies in Bulgaria.
- The Bulgarian Academy of Sciences in 2023 (From the Report on the Activities of BAS in 2023)
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70th Anniversary of Corresponding Member Atanas Kovachev
Author(s): Ekaterina Todorova
- International Cyrillic Forum “Alphabet. Language. Identity”
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Anniversary Scientific Session “From the Idea to the Industrial Product” (50 Years since the Invention of the Copper Bromide Vapour Laser)
Author(s): Radostina Kamburova
- Newly-elected Management of the Ninth General Assembly of BAS
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“Minimally Invasive Gynecologic Surgery”
Author(s): Damian Damianov
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“Marbas” (A Book Dedicated to the Maritsa West Coal Mine)
Author(s): Ivan Ruschev
- Corresponding Member Mihail Davidov
Journal of BAS
ISSN 0007-3989 (print)
ISSN 2683-0302 (on line)
150 Years
"Journal of the BAS"
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