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Georgi Manev
Georgi Manev ( bg, Георги Манев) (15 January 1884 – 15 July 1965) was a Bulgarian physicist, founder of the Sofia University Department of Theoretical Physics, rector of Sofia University (1936–37) and education minister of Bulgaria (1938). His work, mostly known as the Manev field, is used today in aerospace science. The articles he published in the 1920s have been noticed by Yusuke Hagihara and have been further analysed by Florin Diacu and co-workers. Letter from Albert Einstein Manev's gravitational theory ran counter to Albert Einstein Albert Einstein ( ; ; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. Einstein is best known for developing the theory ...’s theory of relativity. Einstein's less-than-glowing assessment of Manev’s theory had complicated his colleague’s prospects for a full professorship at Sofia University. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veliko Tarnovo
Veliko Tarnovo ( bg, Велико Търново, Veliko Tărnovo, ; "Great Tarnovo") is a town in north central Bulgaria and the administrative centre of Veliko Tarnovo Province. Often referred as the "''City of the Tsars''", Veliko Tarnovo is located on the Yantra River and is famously known as the historical capital of the Second Bulgarian Empire, attracting many tourists with its unique architecture. The old part of the town is situated on three hills, Tsarevets, Trapezitsa, and Sveta Gora, rising amidst the meanders of the Yantra. On Tsarevets are the palaces of the Bulgarian emperors and the Patriarchate, the Patriarchal Cathedral, and also a number of administrative and residential edifices surrounded by thick walls. Trapezitsa is known for its many churches and as the former main residence of the nobility. During the Middle Ages, the town was among the main European centres of culture and gave its name to the architecture of the Tarnovo Artistic School, painting of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgi Genov
{{disambig ...
Georgi may refer to: * Georgi (given name) * Georgi (surname) See also *Georgy (other) *Georgii (other) Georgii may refer to: ;Given name *Georgii Zantaraia (born 1987), Ukrainian judoka of Georgian origin *Georgii Karpechenko (1899–1941) Russian and Soviet biologist *Georgii Frederiks (1889–1938), Russian geologist *Georgii Zeliony (187 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People From Veliko Tarnovo
A person ( : people) is a being that has certain capacities or attributes such as reason, morality, consciousness or self-consciousness, and being a part of a culturally established form of social relations such as kinship, ownership of property, or legal responsibility. The defining features of personhood and, consequently, what makes a person count as a person, differ widely among cultures and contexts. In addition to the question of personhood, of what makes a being count as a person to begin with, there are further questions about personal identity and self: both about what makes any particular person that particular person instead of another, and about what makes a person at one time the same person as they were or will be at another time despite any intervening changes. The plural form "people" is often used to refer to an entire nation or ethnic group (as in "a people"), and this was the original meaning of the word; it subsequently acquired its use as a plural form of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgarian Physicists
Bulgarian may refer to: * Something of, from, or related to the country of Bulgaria * Bulgarians, a South Slavic ethnic group * Bulgarian language, a Slavic language * Bulgarian alphabet * A citizen of Bulgaria, see Demographics of Bulgaria * Bulgarian culture * Bulgarian cuisine, a representative of the cuisine of Southeastern Europe See also * * List of Bulgarians, include * Bulgarian name, names of Bulgarians * Bulgarian umbrella, an umbrella with a hidden pneumatic mechanism * Bulgar (other) * Bulgarian-Serbian War (other) The term Bulgarian-Serbian War or Serbian-Bulgarian War may refer to: * Bulgarian-Serbian War (839-842) * Bulgarian-Serbian War (853) * Bulgarian-Serbian wars (917-924) * Bulgarian-Serbian War (1330) * Bulgarian-Serbian War (1885) * Bulgarian-Serbi ... {{disambiguation Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1965 Deaths
Events January–February * January 14 – The Prime Minister of Northern Ireland and the Taoiseach of the Republic of Ireland meet for the first time in 43 years. * January 20 ** Lyndon B. Johnson is sworn in for a full term as President of the United States. ** Indonesian President Sukarno announces the withdrawal of the Indonesian government from the United Nations. * January 30 – The state funeral of Sir Winston Churchill takes place in London with the largest assembly of dignitaries in the world until the 2005 funeral of Pope John Paul II. * February 4 – Trofim Lysenko is removed from his post as director of the Institute of Genetics at the Academy of Sciences in the Soviet Union. Lysenkoist theories are now treated as pseudoscience. * February 12 ** The African and Malagasy Common Organization ('; OCAM) is formed as successor to the Afro-Malagasy Union for Economic Cooperation ('; UAMCE), formerly the African and Malagasy Union ('; UAM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1884 Births
Events January–March * January 4 – The Fabian Society is founded in London. * January 5 – Gilbert and Sullivan's ''Princess Ida'' premières at the Savoy Theatre, London. * January 18 – Dr. William Price attempts to cremate his dead baby son, Iesu Grist, in Wales. Later tried and acquitted on the grounds that cremation is not contrary to English law, he is thus able to carry out the ceremony (the first in the United Kingdom in modern times) on March 14, setting a legal precedent. * February 1 – ''A New English Dictionary on historical principles, part 1'' (edited by James A. H. Murray), the first fascicle of what will become ''The Oxford English Dictionary'', is published in England. * February 5 – Derby County Football Club is founded in England. * March 13 – The siege of Khartoum, Sudan, begins (ends on January 26, 1885). * March 28 – Prince Leopold, the youngest son and the eighth child of Queen Victoria and Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Einstein
Albert Einstein ( ; ; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. Einstein is best known for developing the theory of relativity, but he also made important contributions to the development of the theory of quantum mechanics. Relativity and quantum mechanics are the two pillars of modern physics. His mass–energy equivalence formula , which arises from relativity theory, has been dubbed "the world's most famous equation". His work is also known for its influence on the philosophy of science. He received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect", a pivotal step in the development of quantum theory. His intellectual achievements and originality resulted in "Einstein" becoming synonymous with "genius". In 1905, a year sometimes described as his ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florin Diacu
Florin Nicolae Diacu (; April 24, 1959 – February 13, 2018) was a Romanian Canadian mathematician and author. Education and career He graduated with a Diploma in Mathematics from the University of Bucharest in 1983. Between 1983 and 1988 he worked as a math teacher in Mediaș. In 1989 he obtained his doctoral degree at the Heidelberg University in Germany with a thesis in celestial mechanics written under the direction of Willi Jäger. After a visiting position at the University of Dortmund, Diacu immigrated to Canada, where he became a post-doctoral fellow at Centre de Recherches Mathématiques (CRM) in Montreal. Since 1991, he was a professor at the University of Victoria in British Columbia, where he was the director of the Pacific Institute for the Mathematical Sciences (PIMS) between 1999 and 2003. In 2017 he became a Professor and Head of Studies of Mathematical, Computational & Statistical Sciences at Yale-NUS College in Singapore. He also held short-term visiting posit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yusuke Hagihara
was a Japanese astronomer noted for his contributions to celestial mechanics. Life and work Hagihara graduated from Tokyo Imperial University with a degree in astronomy in 1921 and became an assistant professor of astronomy there two years later. In 1923 the Japanese government sent him abroad as a traveling scholar. Hagihara went to Cambridge University in England to study differential equations under the mathematician Henry Frederick Baker and relativity alongside Paul Dirac under the astrophysicist Sir Arthur Stanley Eddington. He was a visiting scholar in France, Germany, and the United States. He returned to Japan in 1925 but left for the United States three years later to study the topology of dynamical systems at Harvard University under George David Birkhoff on a Rockefeller Foundation Fellowship. Hagihara finished his studies at Harvard in 1929 and returned again to the University of Tokyo, where, in 1930, he completed a D.Sc. dissertation on the stability of sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerospace
Aerospace is a term used to collectively refer to the atmosphere and outer space. Aerospace activity is very diverse, with a multitude of commercial, industrial and military applications. Aerospace engineering consists of aeronautics and astronautics. Aerospace organizations research, design, manufacture, operate, or maintain both aircraft and spacecraft. The beginning of space and the ending of the air is considered as 100 km (62 mi) above the ground according to the physical explanation that the air pressure is too low for a lifting body to generate meaningful lift force without exceeding orbital velocity. Overview In most industrial countries, the aerospace industry is a cooperation of the public and private sectors. For example, several states have a civilian space program funded by the government, such as NASA, National Aeronautics and Space Administration in the United States, European Space Agency in Europe, the Canadian Space Agency in Canada, Indian Space Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physicist
A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate causes of phenomena, and usually frame their understanding in mathematical terms. Physicists work across a wide range of research fields, spanning all length scales: from sub-atomic and particle physics, through biological physics, to cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: experimental physicists who specialize in the observation of natural phenomena and the development and analysis of experiments, and theoretical physicists who specialize in mathematical modeling of physical systems to rationalize, explain and predict natural phenomena. Physicists can apply their knowledge towards solving practical problems or to developing new technologies (also known as applie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgaria
Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. Bulgaria covers a territory of , and is the sixteenth-largest country in Europe. Sofia is the nation's capital and largest city; other major cities are Plovdiv, Varna and Burgas. One of the earliest societies in the lands of modern-day Bulgaria was the Neolithic Karanovo culture, which dates back to 6,500 BC. In the 6th to 3rd century BC the region was a battleground for ancient Thracians, Persians, Celts and Macedonians; stability came when the Roman Empire conquered the region in AD 45. After the Roman state splintered, tribal invasions in the region resumed. Around the 6th century, these territories were settled by the early Slavs. The Bulgars, led by Asp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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