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Constantin Perskyi
Constantin Dmitrievich Perskyi (Константин Дмитриевич Перский) (2 June 18545 April 1906) was a Russian scientist who is credited with coining the word television (''télévision'') in a paper that he presented in French at the 1st International Congress of Electricity, which ran from 18 to 25 August 1900 during the International World Fair in Paris. At the time, he was Professor of Electricity at the Artillery Academy of Saint Petersburg. His paper referred to the work of other experimenters in the field, including Paul Gottlieb Nipkow and Porfiry Ivanovich Bakhmetiev, who were attempting to use the photoelectric properties of selenium as the basis for their research in the field of image transmission. Biography Konstantin Perskyi was born on 21 May (2 June in Julian calendar), 1854 in Tver Governorate. He belonged to a noble family founded by a person who had moved out of Persia in the service of the grand prince of Dmitry Donskoy. He studied in Michal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tver Governorate
Tver Governorate (russian: Тверская губерния, ''Tverskaya guberniya'') was an administrative division (a '' guberniya'') of the Russian Empire and Russian SFSR, which existed from 1796 until 1929. Its seat was in Tver. The governorate was located in the center of the European part of the Russian Empire and bordered Novgorod Governorate in the north, Yaroslavl Governorate in the east, Vladimir Governorate in the southeast, Moscow Governorate in the south, Smolensk Governorate in the southwest, and Pskov Governorate in the west. The area of the governorate is currently split between Tver and Moscow Oblasts. Minor parts of Tver Governorate also currently belong to Yaroslavl and Novgorod Oblasts. History In the 18th century, the areas which were later occupied by Tver Governorate were split between Moscow and Novgorod Governorates. On 25 November 1775 Tver Viceroyalty was established with the administrative center in Tver. On 12 December 1796 the vic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selenium
Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. It seldom occurs in its elemental state or as pure ore compounds in the Earth's crust. Selenium – from Greek ( 'Moon') – was discovered in 1817 by , who noted the similarity of the new element to the previously discovered tellurium (named for the Earth). Selenium is found in metal sulfide ores, where it partially replaces the sulfur. Commercially, selenium is produced as a byproduct in the refining of these ores, most often during production. Minerals that are pure selenide or selenate compounds are known but rare. The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells. Applications in electronics, once important, have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Television Pioneers
Television, sometimes shortened to TV, is a telecommunication medium for transmitting moving images and sound. The term can refer to a television set, or the medium of television transmission. Television is a mass medium for advertising, entertainment, news, and sports. Television became available in crude experimental forms in the late 1920s, but only after several years of further development was the new technology marketed to consumers. After World War II, an improved form of black-and-white television broadcasting became popular in the United Kingdom and the United States, and television sets became commonplace in homes, businesses, and institutions. During the 1950s, television was the primary medium for influencing public opinion.Diggs-Brown, Barbara (2011''Strategic Public Relations: Audience Focused Practice''p. 48 In the mid-1960s, color broadcasting was introduced in the U.S. and most other developed countries. The availability of various types of archival stora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Inventors
This is a list of inventors from the Russian Federation, Soviet Union, Russian Empire, Tsardom of Russia and Grand Duchy of Moscow, including both ethnic Russians and people of other ethnicities. This list also includes those who were born in Russia or its predecessor states but later emigrated, and those who were born elsewhere but immigrated to the country or worked there for a considerable time, (producing inventions on Russian soil). For Russian inventions in chronological order, see the Timeline of Russian inventions and technology records. Alphabetical list A B C D E F G H I J K L M N O P R S T U V W Y Z See also * List of Russian scientists * Russian culture * Timeline of Russian inventions and technology records References {{DEFAULTSORT:Russian Inventors * Inventors Lists of inventors Inventors An invention is a unique or novel device, method, composition, idea or process. An invention may be an improve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Physicists
This list of Russian physicists includes the famous physicists from the Russian Empire, the Soviet Union and the Russian Federation. Alphabetical list __NOTOC__ A * Alexei Abrikosov, discovered how magnetic flux can penetrate a superconductor (the Abrikosov vortex), Nobel Prize winner *Franz Aepinus, related electricity and magnetism, proved the electric nature of pyroelectricity, explained electric polarization and electrostatic induction, invented achromatic microscope * Zhores Alferov, inventor of modern heterotransistor, Nobel Prize winner * Sergey Alekseenko, director of the Kutateladze Institute of Thermophysics, Global Energy Prize recipient * Artem Alikhanian, a prominent researcher of cosmic rays, inventor of wide-gap track spark chamber *Abram Alikhanov, nuclear physicist, a prominent researcher of cosmic rays, built the first nuclear reactors in the USSR, founder of Institute for Theoretical and Experimental Physics (ITEP) * Semen Altshuler, researched EPR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Television
The concept of television was the work of many individuals in the late 19th and early 20th centuries. The first practical transmissions of moving images over a radio system used mechanical rotating perforated disks to scan a scene into a time-varying signal that could be reconstructed at a receiver back into an approximation of the original image. Development of television was interrupted by the Second World War. After the end of the war, all-electronic methods of scanning and displaying images became standard. Several different standards for addition of color to transmitted images were developed with different regions using technically incompatible signal standards. Television broadcasting expanded rapidly after World War II, becoming an important mass media, mass medium for advertising, propaganda, and entertainment. Television broadcasts can be distributed over the air by VHF and UHF radio signals from terrestrial transmitting stations, by microwave signals from Earth orbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander III Of Russia
Alexander III ( rus, Алекса́ндр III Алекса́ндрович, r=Aleksandr III Aleksandrovich; 10 March 18451 November 1894) was Emperor of Russia, King of Poland and Grand Duke of Finland from 13 March 1881 until his death in 1894. He was highly reactionary and reversed some of the liberal reforms of his father, Alexander II. This policy is known in Russia as "counter-reforms" ( rus, контрреформы). Under the influence of Konstantin Pobedonostsev (1827–1907), he opposed any reform that limited his autocratic rule. During his reign, Russia fought no major wars; he was therefore styled "The Peacemaker" ( rus, Миротворец, Mirotvorets, p=mʲɪrɐˈtvorʲɪt͡s). It was he who helped forge the Russo-French Alliance. Personality Grand Duke Alexander Alexandrovich was born on 10 March 1845 at the Winter Palace in Saint Petersburg, Russian Empire, the second son and third child of Tsesarevich Alexander (Future Alexander II) and his first wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dmitry Donskoy
Saint Dmitry Ivanovich Donskoy ( rus, Дми́трий Ива́нович Донско́й, Dmítriy Ivanovich Donskóy, also known as Dimitrii or Demetrius), or Dmitry of the Don, sometimes referred to simply as Dmitry (12 October 1350 – 19 May 1389), son of Ivan II the Fair of Moscow (1326–1359), reigned as the Prince of Moscow from 1359 and Grand Prince of Vladimir from 1363 to his death. He was the first prince of Moscow to openly challenge Mongol authority in Russia. He is regarded as a national hero and central figure of the Russian Middle Ages. His nickname, Donskoy ("of the Don"), alludes to his great victory against the Tatars in the Battle of Kulikovo (1380), which took place on the Don River. He is venerated as a Saint in the Orthodox Church with his feast day on 19 May. Early reign Dmitry was born in Moscow in 1350, the son of Ivan the Fair, Grand Prince of Moscow, and his second wife, Alexandra Vassilievna Velyaminova, the daughter of the mayor of Mosco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photoelectric Effect
The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. Electrons emitted in this manner are called photoelectrons. The phenomenon is studied in condensed matter physics, and solid state and quantum chemistry to draw inferences about the properties of atoms, molecules and solids. The effect has found use in electronic devices specialized for light detection and precisely timed electron emission. The experimental results disagree with classical electromagnetism, which predicts that continuous light waves transfer energy to electrons, which would then be emitted when they accumulate enough energy. An alteration in the intensity of light would theoretically change the kinetic energy of the emitted electrons, with sufficiently dim light resulting in a delayed emission. The experimental results instead show that electrons are dislodged only when the light exceeds a certain frequency—regardless of the light's intensity o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Empire
The Russian Empire was an empire and the final period of the Russian monarchy from 1721 to 1917, ruling across large parts of Eurasia. It succeeded the Tsardom of Russia following the Treaty of Nystad, which ended the Great Northern War. The rise of the Russian Empire coincided with the decline of neighbouring rival powers: the Swedish Empire, the Polish–Lithuanian Commonwealth, Qajar Iran, the Ottoman Empire, and Qing China. It also held colonies in North America between 1799 and 1867. Covering an area of approximately , it remains the third-largest empire in history, surpassed only by the British Empire and the Mongol Empire; it ruled over a population of 125.6 million people per the 1897 Russian census, which was the only census carried out during the entire imperial period. Owing to its geographic extent across three continents at its peak, it featured great ethnic, linguistic, religious, and economic diversity. From the 10th–17th centuries, the land ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porfiry Ivanovich Bakhmetiev
Porfiry Ivanovich Bakhmetiev (in Russian Порфирий Иванович Бахметьев; in Bulgarian Порфирий Иванович Бахметиев; in English also spelled as: BachmetjevFor English spelling see e.g.: ) (9 March 1860 in Moscow – 24 October 1913 in Moscow, Old Style 26 February 1860 – 14 October 1913) was a Russian and Bulgarian physicist and experimental biologist. The son of a peasant, after graduating from his local school in Syzran, Samara Oblast, Russia, in 1883, he graduated from the University of Zurich in Switzerland writing a thesis on wandering electrical currents. Bakhmetiev was a Member of the Bulgarian Academy of Sciences and the founder of the Physical and Mathematical Society in Sofia in 1898. Beginning 1890, Bakhmetiev taught at the University of Sofia and since 1895 as a professor. In 1913 he was a professor of biophysics at the Shanyavsky University in Moscow, Russia. He specialized in the problems of ferromagnetism, geophysi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Gottlieb Nipkow
Paul Julius Gottlieb Nipkow (22 August 1860 – 24 August 1940) was a German technician and inventor. He invented the Nipkow disk, which laid the foundation of television, since his disk was a fundamental component in the first televisions. Hundreds of stations experimented with television broadcasting using his disk in the 1920s and 1930s, until it was superseded by all-electronic systems in the 1940s. Nipkow has been called the "father of television", together with other early figures of television history like Karl Ferdinand Braun. The first public television station in the world, Fernsehsender Paul Nipkow, was named in his honour. Beginnings Nipkow was born in Lauenburg (now Lębork) in the Prussian province of Pomerania, now part of Poland. While at school in neighbouring Neustadt (now Wejherowo), in the province of West Prussia, Nipkow experimented in telephony and the transmission of moving pictures. After graduation, he went to Berlin in order to study science. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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