Georgi Nadjakov
Georgi S. Nadjakov | |
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Георги Стефанов Наджаков | |
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| Born | (7 January [O.S. 26 December] 1897 Dupnitsa, Bulgaria |
| Died | 24 February 1981 (aged 84) Sofia |
Resting place | Central Sofia Cemetery |
| Alma mater | Sofia University |
| Scientific career | |
| Fields | Physics |
| Institutions | Sofia University; Institute of Physics, Bulgarian Academy of Sciences |
Georgi Nadjakov (also spelled Georgi Nadzhakov or Nadjakov; Georges Nadjakoff) (Bulgarian: Георги Наджаков) (7 January [O.S. 26 December] 1897 – 24 February 1981) was a Bulgarian physicist.[1] He was a corresponding member of the Göttingen Academy of Sciences (1940) in Germany, member of the Bulgarian Academy of Sciences (1945) and member of the Russian Academy of Sciences (1958).
Career
[edit]Sofia University sent him to specialize in the laboratories of Paul Langevin and Marie Curie in Paris, where he investigated photoelectricity for one year.[1]
Georgi Nadjakov experimentally investigated photoconducting properties of sulphur. He prepared the permanent photoelectret state of matter for the first time and published his paper in 1937[2] and 1938.[3] He called[citation needed] the electret discovered by Mototaro Eguchi in 1919, thermoelectret and the electret discovered by him in 1937, photoelectret.[4][5]
Photoelectrets were the most notable achievement of Georgi Nadjakov.[1] Its practical application led to the invention of the photocopier by Chester Carlson some years later.
Since 1958 Nadjakov had been a member of the Pugwash Movement of Scientists for Peace.[6]
Honours
[edit]- Nadjakov Glacier on Graham Land in Antarctica is named after Georgi Nadjakov.
- Institute of Solid State Physics is since 1982 known as Georgi Nadjakov Institute of Solid State Physics. Its predecessor was founded by Georgi Nadjakov in 1946.
- The study of Georgy Nadjakov is a Historic Site of the European Physical Society since 23 May 2014.[7]
References
[edit]- 1 2 3 "NADJAKOV, GEORGI". The International Who's Who 1980-1981 (44TH ed.). London: Europa Publications Limited. 1980. pp. 898. Retrieved 8 February 2026 – via Internet Archive.
- ↑ Nadjakoff, Georges (1937). "SUR UNE NOUVELLE ESPECE DE POLARISATION PERMANENTE DES DIELECTRIQUES". Comptes Rendus de l'Académie des Sciences de Paris. 204: 1865–1866.
- ↑ Nadjakoff, G. (1938). "UBER EINE NEUE ART VON ELEKTRETEN: PHOTOELEKTRETEN". Physikalische Zeitschrift. 39 (6): 226–227.
- ↑ "Photoelectret State of Matter". Archived from the original on 2021-12-21.
- ↑ Kao, Kwan-Chi (2004). "5: Electrets". Dielectric Phenomena in Solids. Academic Press. p. 283. ISBN 978-0123965615. Retrieved 12 November 2013.
- ↑ Rotblat, Joseph (1967). The Pugwash - The First Ten Years: History of the Conferences on Sciences and World Affairs. London: Heinemann. p. 95 – via Internet Archive.
- ↑ "Georgi Nadjakov Study – EPS Historic Site".
External links
[edit]External links
[edit]- Rotblat, Joseph (1972). Scientists in the Quest for Peace: A History of the Pugwash Movement. Cambridge, MA and London: MIT Press. pp. 91, 156, 167, 183, 186, 196, 211, 219, 296, 316, 327, 357, 373.
- "Founding Fathers: Georgi Nadjakov". Joint Institute for Nuclear Research. 8 January 2023. Retrieved 16 September 2023.
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