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Vladimir Zworykin
Vladimir Kosma Zworykin (1888/1889July 29, 1982) was a Russian-American inventor, engineer, and pioneer of television technology. Zworykin invented a television transmitting and receiving system employing cathode-ray tubes. He played a role in the practical development of television from the early thirties, including charge storage-type tubes, infrared image tubes and the electron microscope. Early life and education Vladimir Zworykin was born in Murom, Russia, in 1888 or 1889, to the family of a prosperous merchant, merchants. He had a relatively calm upbringing, and he rarely saw his father except on religious holidays. He studied at the St. Petersburg Institute of Technology, under Boris Rosing. He helped Rosing with experimental work on television in the basement of Rosing's private lab at the School of Artillery of Saint Petersburg. They worked on the problem of "electrical telescopy," something Zworykin had never heard of before. At this time, electrical telescopy (or te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Murom
Murom (, ) is a historical types of inhabited localities in Russia, city in Vladimir Oblast, Russia, which sprawls along the west bank of the Oka River. It borders Nizhny Novgorod Oblast and is situated from the administrative center Vladimir, Russia, Vladimir. Its population as of the 2021 Russian census, 2021 Census was 107,497. History In the 9th century AD, the city marked the easternmost settlement of the East Slavs in the land of the Finnic Volga Finns, Muromians. The ''Primary Chronicle'' mentions it as early as AD 862. It is, thus, one of the oldest cities in Russia. Circa 900 AD, it was an important trading post from Volga Bulgaria to the Baltic Sea. Between AD 1010 and AD 1393, it was the capital of a separate principality, whose rulers included Saint Boris and Gleb, Gleb, assassinated in AD 1015 and canonized in AD 1071, Saint Prince Konstantin of Murom, Konstantin the Blessed, and Saints Peter and Fevronia of Murom, subjects of an opera by Nikolai Rimsky-Korsak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Slavic Naming Customs
East Slavic naming customs are the traditional way of identifying a person's family name, given name, and patronymic name in East Slavic cultures in Russia and some countries formerly part of the Russian Empire and the Soviet Union. They are used commonly in Russia, Ukraine, Belarus, Moldova, Kazakhstan, Turkmenistan, Uzbekistan, and to a lesser extent in Kyrgyzstan, Tajikistan, Azerbaijan, Armenia and Georgia. Given names East Slavic parents select a given name for a newborn child. Most first names in East Slavic languages originate from two sources: * Eastern Orthodox Church tradition * native pre-Christian Slavic lexicons Almost all first names are single. Doubled first names (as in, for example, French, like ''Jean-Luc'') are very rare and are from foreign influence. Most doubled first names are written with a hyphen: ''Mariya-Tereza''. Males Females Forms Being highly synthetic languages, the East Slavic ones treat personal names as grammatical nouns and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Civil War
The Russian Civil War () was a multi-party civil war in the former Russian Empire sparked by the 1917 overthrowing of the Russian Provisional Government in the October Revolution, as many factions vied to determine Russia's political future. It resulted in the formation of the Russian Soviet Federative Socialist Republic, Russian Socialist Federative Soviet Republic and later the Soviet Union in most of its territory. Its finale marked the end of the Russian Revolution, which was one of the key events of the 20th century. The List of Russian monarchs, Russian monarchy ended with the abdication of Nicholas II, Tsar Nicholas II during the February Revolution, and Russia was in a state of political flux. A tense summer culminated in the October Revolution, where the Bolsheviks overthrew the Russian Provisional Government, provisional government of the new Russian Republic. Bolshevik seizure of power was not universally accepted, and the country descended into a conflict which beca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War I
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting took place mainly in European theatre of World War I, Europe and the Middle Eastern theatre of World War I, Middle East, as well as in parts of African theatre of World War I, Africa and the Asian and Pacific theatre of World War I, Asia-Pacific, and in Europe was characterised by trench warfare; the widespread use of Artillery of World War I, artillery, machine guns, and Chemical weapons in World War I, chemical weapons (gas); and the introductions of Tanks in World War I, tanks and Aviation in World War I, aircraft. World War I was one of the List of wars by death toll, deadliest conflicts in history, resulting in an estimated World War I casualties, 10 million military dead and more than 20 million wounded, plus some 10 million civilian de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Langevin
Paul Langevin (23 January 1872 – 19 December 1946) was a French physicist who developed Langevin dynamics and the Langevin equation. He was one of the founders of the '' Comité de vigilance des intellectuels antifascistes'', an anti-fascist organization created after the 6 February 1934 far right riots. Being a public opponent of fascism in the 1930s resulted in his arrest and being held under house arrest by the Vichy government for most of World War II. Langevin was also president of the Human Rights League (LDH) from 1944 to 1946, having recently joined the French Communist Party. He was a doctoral student of Pierre Curie and later a lover of widowed Marie Curie. He is also known for his two US patents with Constantin Chilowsky in 1916 and 1917 involving ultrasonic submarine detection. He is entombed at the Panthéon. Life Langevin was born in Paris, and studied at the '' École de Physique et Chimie'' and the ''École Normale Supérieure''. He then went to the Univ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Petersburg
Saint Petersburg, formerly known as Petrograd and later Leningrad, is the List of cities and towns in Russia by population, second-largest city in Russia after Moscow. It is situated on the Neva, River Neva, at the head of the Gulf of Finland on the Baltic Sea. The city had a population of 5,601,911 residents as of 2021, with more than 6.4 million people living in the Saint Petersburg metropolitan area, metropolitan area. Saint Petersburg is the List of European cities by population within city limits, fourth-most populous city in Europe, the List of cities and towns around the Baltic Sea, most populous city on the Baltic Sea, and the world's List of northernmost items#Cities and settlements, northernmost city of more than 1 million residents. As the former capital of the Russian Empire, and a Ports of the Baltic Sea, historically strategic port, it is governed as a Federal cities of Russia, federal city. The city was founded by Tsar Peter the Great on 27 May 1703 on the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boris Rosing
Boris Lvovich Rosing (; – 20 April 1933) was a Russian scientist and inventor of television. Biography Boris Rosing was born in Saint Petersburg into the family of a government official. His father, Lev Nikolaevich Rozing, served on the commission for military service (conscription) under Czar Alexander II. Rozing was a descendant of the noble Rozing family, founded by Dutch immigrant Peter Rozing. Lev developed an interest in mathematics and technology, including recent inventions, which he communicated to his son. From 1879 to 1887, Boris studied at St. Petersburg's Vvdensky gymnasium, from which he graduated with a gold medal. There, he distinguished himself in his studies of the exact sciences, literature and music. He then studied physics and mathematics at St. Petersburg University, which was a major research center. The distinguished faculty included the chemist Dmitri Mendeleev and the mathematicians Pafnuty Chebyshev and Andrey Markov. After graduating wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merchant
A merchant is a person who trades in goods produced by other people, especially one who trades with foreign countries. Merchants have been known for as long as humans have engaged in trade and commerce. Merchants and merchant networks operated in ancient Babylonia, Assyria, China, Egypt, Greece, India, Persia, Phoenicia and Rome. During the European medieval period, a rapid expansion in trade and commerce led to the rise of a wealthy and powerful merchant class. The European Age of Discovery opened up new trading routes and gave European consumers access to a much broader range of goods. By the 18th century, a new type of manufacturer-merchant had started to emerge and modern business practices were becoming evident. The status of the merchant has varied during different periods of history and among different societies. In modern times, the term ''merchant'' has occasionally been used to refer to a businessperson or someone undertaking activities (commercial or industrial) for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron Microscope
An electron microscope is a microscope that uses a beam of electrons as a source of illumination. It uses electron optics that are analogous to the glass lenses of an optical light microscope to control the electron beam, for instance focusing it to produce magnified images or electron diffraction patterns. As the wavelength of an electron can be up to 100,000 times smaller than that of visible light, electron microscopes have a much higher Angular resolution, resolution of about 0.1 nm, which compares to about 200 nm for optical microscope, light microscopes. ''Electron microscope'' may refer to: * Transmission electron microscopy, Transmission electron microscope (TEM) where swift electrons go through a thin sample * Scanning transmission electron microscopy, Scanning transmission electron microscope (STEM) which is similar to TEM with a scanned electron probe * Scanning electron microscope (SEM) which is similar to STEM, but with thick samples * Electron microprobe sim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared
Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with the waves that are just longer than those of red light (the longest waves in the visible spectrum), so IR is invisible to the human eye. IR is generally (according to ISO, CIE) understood to include wavelengths from around to . IR is commonly divided between longer-wavelength thermal IR, emitted from terrestrial sources, and shorter-wavelength IR or near-IR, part of the solar spectrum. Longer IR wavelengths (30–100 μm) are sometimes included as part of the terahertz radiation band. Almost all black-body radiation from objects near room temperature is in the IR band. As a form of EMR, IR carries energy and momentum, exerts radiation pressure, and has properties corresponding to both those of a wave and of a particle, the photon. It was long known that fires e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cathode-ray Tube
A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. The images may represent electrical waveforms on an oscilloscope, a Film frame, frame of video on an Analog television, analog television set (TV), Digital imaging, digital raster graphics on a computer monitor, or other phenomena like radar targets. A CRT in a TV is commonly called a picture tube. CRTs have also been Williams tube, used as memory devices, in which case the screen is not intended to be visible to an observer. The term ''cathode ray'' was used to describe electron beams when they were first discovered, before it was understood that what was emitted from the cathode was a beam of electrons. In CRT TVs and computer monitors, the entire front area of the tube is scanned repeatedly and systematically in a fixed pattern called a raster scan, raster. In color devices, an image is produced by con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
