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A natural diamond crystal
Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond as a form of carbon is a tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of electricity, and insoluble in water. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth.
Because the arrangement of atoms in diamond is extremely rigid, few types of impurity can contaminate it (two exceptions are boron and nitrogen). Small numbers of defects or impurities (about one per million of lattice atoms) can color a diamond blue (boron), yellow (nitrogen), brown (defects), green (radiation exposure), purple, pink, orange, or red. Diamond also has a very high refractive index and a relatively high optical dispersion. (Full article...)
Russia, led by Catherine the Great, was pressing the Ottomans in Europe. Ali took advantage of the Empire's preoccupation with Russia to declare Egypt's independence; in 1771 he sent an army led by Muhammad Bey Abu al-Dhahab to occupy Ottoman territory in the Levant. Abu al-Dhahab unexpectedly returned to challenge Ali for control of Egypt. Ali requested Russian military assistance against both his rival and the Ottomans. When this aid, in the form of a small Russian squadron, arrived in the region, Ali had already fled Egypt and taken refuge in Acre, the power base of his ally, Zahir al-Umar. After helping repel an Ottoman offensive on Sidon, the Russian squadron sailed for Beirut. They bombarded the town in June 1772 and occupied it from June23 to 28. (Full article...)
The region that formed the TDFR had been part of the Russian Empire. As the empire dissolved during the 1917 February Revolution and a provisional government took over, a similar body, called the Special Transcaucasian Committee (Ozakom), did the same in the Caucasus. After the October Revolution and rise of the Bolsheviks in Russia, the Transcaucasian Commissariat replaced the Ozakom. In March 1918, as the First World War continued, the Commissariat initiated peace talks with the Ottoman Empire, which had invaded the region, but the talks broke down quickly as the Ottomans refused to accept the authority of the Commissariat. The Treaty of Brest-Litovsk, which ended Russia's involvement in the war, conceded parts of the Transcaucasus to the Ottoman Empire, which pursued its invasion to take control of the territory. Faced with this imminent threat, on 22 April 1918 the Commissariat dissolved itself and established the TDFR as an independent state. A legislature, the Seim, was formed to direct negotiations with the Ottoman Empire, which had immediately recognized the state. (Full article...)
Poltava was salvaged after the Japanese captured Port Arthur and incorporated into the Imperial Japanese Navy. The ship, renamed Tango in Japanese service, participated in the Battle of Tsingtao in late 1914, during World War I. She was sold back to the Russians in 1916 and renamed Chesma as her original name was in use by another battleship. The ship became the flagship of the Russian Arctic Flotilla in 1917, and her crew supported the Bolsheviks later that year. Chesma was seized by the British in early 1918 when they intervened in the Russian Civil War, abandoned by them when they withdrew and scrapped by the Soviets in 1924. (Full article...)
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Nansen's Fram expedition of 1893–1896 was an attempt by the Norwegian explorer Fridtjof Nansen to reach the geographical North Pole by harnessing the natural east–west current of the Arctic Ocean. In the face of much discouragement from other polar explorers, Nansen took his ship Fram to the New Siberian Islands in the eastern Arctic Ocean, froze her into the pack ice, and waited for the drift to carry her towards the pole. Impatient with the slow speed and erratic character of the drift, after 18 months Nansen and a chosen companion, Hjalmar Johansen, left the ship with a team of Samoyed dogs and sledges and made for the pole. They did not reach it, but they achieved a record Farthest North latitude of 86°13.6′N before a long retreat over ice and water to reach safety in Franz Josef Land. Meanwhile, Fram continued to drift westward, finally emerging in the North Atlantic Ocean.
The idea for the expedition had arisen after items from the American vessel Jeannette, which had sunk off the north coast of Siberia in 1881, were discovered three years later off the south-west coast of Greenland. The wreckage had obviously been carried across the polar ocean, perhaps across the pole itself. Based on this and other debris recovered from the Greenland coast, the meteorologist Henrik Mohn developed a theory of transpolar drift, which led Nansen to believe that a specially designed ship could be frozen in the pack ice and follow the same track as Jeannette wreckage, thus reaching the vicinity of the pole. (Full article...)
The terrain complicated battle tactics for both sides, but the Russians and the Austrians, having arrived in the area first, were able to overcome many of its difficulties by strengthening a causeway between two small ponds. They had also devised a solution to Frederick's deadly modus operandi, the oblique order. Although Frederick's troops initially gained the upper hand in the battle, his limited scouting, combined with the strong defensive preparations of the Allied troops, gave the Russians and Austrians an advantage. By afternoon, when the combatants were exhausted, fresh Austrian troops thrown into the fray secured the Allied victory. (Full article...)
The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed. The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb). The species is sexually dimorphic, as adult females are much smaller. The polar bear is white- or yellowish-furred with black skin and a thick layer of fat. It is more slender than the brown bear, with a narrower skull, longer neck and lower shoulder hump. Its teeth are sharper and more adapted to cutting meat. The paws are large and allow the bear to walk on ice and paddle in the water.
Polar bears are both terrestrial and pagophilic (ice-living) and are considered to be marine mammals due to their dependence on marine ecosystems. They prefer the annual sea ice but live on land when the ice melts in the summer. They are mostly carnivorous and specialized for preying on seals, particularly ringed seals. Such prey is typically taken by ambush; the bear may stalk its prey on the ice or in the water, but also will stay at a breathing hole or ice edge to wait for prey to swim by. The bear primarily feeds on the seal's energy-rich blubber. Other prey include walruses, beluga whales and some terrestrial animals. Polar bears are usually solitary but can be found in groups when on land. During the breeding season, male bears guard females and defend them from rivals. Mothers give birth to cubs in maternity dens during the winter. Young stay with their mother for up to two and a half years. (Full article...)
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A Finnish Maxim M/09-21 machine gun crew during the Winter War
The Winter War was a war between the Soviet Union and Finland. It began with a Soviet invasion of Finland on 30 November 1939, three months after the outbreak of World War II, and ended three and a half months later with the Moscow Peace Treaty on 13 March 1940. Despite superior military strength, especially in tanks and aircraft, the Soviet Union suffered severe losses and initially made little headway. The League of Nations deemed the attack illegal and expelled the Soviet Union from its organization.
The Soviets made several demands, including that Finland cede substantial border territories in exchange for land elsewhere, claiming security reasons – primarily the protection of Leningrad, 32 km (20 mi) from the Finnish border. When Finland refused, the Soviets invaded. Most sources conclude that the Soviet Union had intended to conquer all of Finland, and cite the establishment of the puppet Finnish Communist government and the Molotov–Ribbentrop Pact's secret protocols as evidence of this, while other sources argue against the idea of a full Soviet conquest. Finland repelled Soviet attacks for more than two months and inflicted substantial losses on the invaders in temperatures as low as −43 °C (−45 °F). The battles focused mainly on Taipale along the Karelian Isthmus, on Kollaa in Ladoga Karelia and on Raate Road in Kainuu, but there were also battles in Salla and Petsamo in Lapland. (Full article...)
Manuel I Komnenos (Greek: Μανουήλ Κομνηνός, romanized: Manouḗl Komnēnós; 28 November 1118 – 24 September 1180), Latinized as Comnenus, also called Porphyrogenitus (Greek: Πορφυρογέννητος; "born in the purple"), was a Byzantine emperor of the 12th century who reigned over a crucial turning point in the history of Byzantium and the Mediterranean. His reign saw the last flowering of the Komnenian restoration, during which the Byzantine Empire experienced a resurgence of military and economic power and enjoyed a cultural revival.
During World War I, she bombarded German fortifications during the siege of Qingdao. The Japanese government sold Tango back to the Russians at their request in 1916. She was renamed Chesma (Чесма) as her former name had been given to a new ship. En route to the White Sea, she joined an Allied force that persuaded the Greek government to disarm their ships. Her crew declared for the Bolsheviks in October 1917, but made no effort to resist when the British captured her during the North Russia intervention in early 1918. In poor condition, the ship was used as a prison hulk. Abandoned by the British when they withdrew in 1919 and recaptured by the Bolsheviks, she was scrapped in 1924. (Full article...)
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Lenin in 1920
Vladimir Ilyich Ulyanov (22 April [O.S. 10 April] 1870 – 21 January 1924), better known as Vladimir Lenin, was a Russian revolutionary, politician, and political theorist. He served as the first and founding head of government of Soviet Russia from 1917 until his death in 1924, and of the Soviet Union from 1922 to 1924. Under his administration, Russia, and later the Soviet Union, became a one-party socialist state governed by the Communist Party. Ideologically a Marxist, his developments to the ideology are called Leninism.
The black stork (Ciconia nigra) is a large bird in the stork family Ciconiidae. It was first described by Carl Linnaeus in the 10th edition of his Systema Naturae. Measuring on average 95 to 100 cm (37 to 39 in) from beak tip to end of tail with a 145-to-155 cm (57-to-61 in) wingspan, the adult black stork has mainly black plumage, with white underparts, long red legs and a long pointed red beak. A widespread but uncommon species, it breeds in scattered locations across Europe (predominantly in Portugal and Spain, and central and eastern parts), and east across the Palearctic to the Pacific Ocean. It is a long-distance migrant, with European populations wintering in tropical Sub-Saharan Africa, and Asian populations in the Indian subcontinent. When migrating between Europe and Africa, it avoids crossing broad expanses of the Mediterranean Sea and detours via the Levant in the east, the Strait of Sicily in the center, or the Strait of Gibraltar in the west. An isolated non-migratory population lives in Southern Africa.
Unlike the closely related white stork, the black stork is a shy and wary species. It is seen singly or in pairs, usually in marshy areas, rivers or inland waters. It feeds on amphibians, small fish and insects, generally wading slowly in shallow water stalking its prey. Breeding pairs usually build nests in large forest trees—most commonly deciduous but also coniferous—which can be seen from long distances, as well as on large boulders, or under overhanging ledges in mountainous areas. The female lays two to five greyish-white eggs, which become soiled over time in the nest. Incubation takes 32 to 38 days, with both sexes sharing duties, and fledging takes 60 to 71 days. (Full article...)
This photo of the Nilov Monastery on Stolobny Island in Tver Oblast, Russia, was taken by Sergey Prokudin-Gorsky in 1910 before the advent of colour photography. His process used a camera that took a series of monochrome pictures in rapid sequence, each through a different coloured filter. By projecting all three monochrome pictures using correctly coloured light, it was possible to reconstruct the original colour scene.
Leo Tolstoy (1828–1910) was a Russian writer who is regarded as one of the world's greatest novelists. He is best known for War and Peace (1869) and Anna Karenina (1877), often cited as pinnacles of realist fiction. Born to an aristocratic family on 9 September [O.S. 28 August] 1828, Tolstoy was orphaned when he was young. He studied at Kazan University, but this was not a success, and he left university without completing his degree. During this time, he began to write and published his first novel, Childhood, in 1852. Tolstoy later served at the Siege of Sevastopol during the Crimean War, and was appalled by the number of deaths and left at the conclusion of the war. He spent the remainder of his life writing whilst also marrying and starting a family. In the 1870s he converted to a form of fervent Christian anarchism.
Fyodor Dostoevsky (1821–81; depicted in 1872) was a Russian novelist, short story writer, essayist and philosopher. After publishing his first novel, Poor Folk, at age 25, Dostoyevsky wrote (among others) eleven novels, three novellas, and seventeen short novels, including Crime and Punishment (1866), The Idiot (1869), and The Brothers Karamazov (1880).
Photograph credit: Arto Jousi; restored by Adam Cuerden
Yuri Gagarin (9 March 1934 – 27 March 1968) was a Soviet Air Forces pilot and cosmonaut who became the first human to journey into outer space; his capsule, Vostok 1, completed a single orbit of Earth on 12 April 1961. Gagarin became an international celebrity and was awarded many medals and titles, including Hero of the Soviet Union, his nation's highest honour. In 1967, he served as a member of the backup crew for the ill-fated Soyuz 1 mission, after which the Russian authorities, fearing for the safety of such an iconic figure, banned him from further spaceflights. However, he was killed the following year, when the MiG-15 training jet that he was piloting with his flight instructor Vladimir Seryogin crashed near the town of Kirzhach.
This photograph of Gagarin, dated July 1961, was taken at a press conference during a visit to Finland approximately three months after his spaceflight.
Kikin Hall, commissioned by Alexander Kikin in 1714, is one of the oldest buildings in Saint Petersburg. Incomplete at the time of Kikin's execution, the building was seized by the Russian crown and used for a variety of purposes. In the 1950s, Irina Benois arranged for the restoration of the dilapidated building. It is now home to a music school.
Kombat (Russian for 'battalion commander') is a black-and-white photograph by Soviet photographer Max Alpert. It depicts a Soviet military officer, armed with a TT pistol, raising his unit for an attack during World War II. This work is regarded as one of the most iconic Soviet World War II photographs, yet neither the date nor the subject is known with certainty. According to the most widely accepted version, it depicts junior politruk Aleksei Gordeyevich Yeryomenko, minutes before his death on 12 July 1942, in Voroshilovgrad Oblast, now part of Ukraine. The photograph is in the archives of RIA Novosti, a Russian state-owned news agency.
A late nineteenth-century photochrom of a reindeer sled, Arkhangelsk, Russia. Reindeer have been herded for centuries by several Arctic and Subarctic people including the Sami and the Nenets. They are raised for their meat, hides, antlers and, to a lesser extent, for milk and transportation.
Saint Basil's Cathedral is a church in Red Square in Moscow, Russia. It was built from 1555 to 1561 on orders from Ivan the Terrible and commemorates the capture of Kazan and Astrakhan. The city's tallest building until the completion of the Ivan the Great Bell Tower in 1600, the original building contained eight side churches arranged around the ninth, central church of Intercession; the tenth church was erected in 1588 over the grave of venerated local saint Vasily (Basil). Although the Bolsheviks considered demolishing the church in the 1930s, it was spared. Since 1991 it has housed a branch of the State Historical Museum and hosted occasional church services.
The Last Day of Pompeii is an oil painting on canvas completed by the Russian artist Karl Bryullov between 1830 and 1833. The painting is based on sketches the artist completed in 1828 while visiting Pompeii, a city destroyed by the eruption of Mount Vesuvius in 79 AD. It is now held in the State Russian Museum.
The Sukhoi Superjet 100 is a modern fly-by-wiretwin-engineregional jet with 8 to 108 passenger seats. Development began in 2000; the aircraft had its maiden flight on 19 May 2008 and entered commercial service on 21 April 2011. This aircraft is seen flying off the coast of Italy near Sanremo.
Hotel Astoria is a five-star hotel located on Saint Isaac's Square in Saint Petersburg. Commissioned in 1910 by the Palace Hotel Company to host visitors to the Romanov tercentenary, the hotel was designed by Fyodor Lidval and first opened in 1912. After the October Revolution, it continued to be used as a state-operated hotel, though during World War II it was also a field hospital. The hotel, now owned by Rocco Forte Hotels, has been renovated several times, most recently in 2012.
This photograph of Skudina, taken in 2009, is part of a collection of 500 images of Russian sportspeople released to Wikimedia Commons by Bolshoi Sport.
An aerial view of the Field of Mars, a large park in central Saint Petersburg, Russia, pictured in 2016. It is named after Mars, the Roman god of war. The park's history goes back to the 18th century, when it was converted from bogland and named the Grand Meadow. Later, it was the setting for celebrations to mark Russia's victory over Sweden in the Great Northern War. Its next name, the Tsaritsyn Meadow, appears after the royal family commissioned Francesco Bartolomeo Rastrelli to build the Summer Palace for Empress Elizabeth. It became the Field of Mars during the reign of Paul I. Towards the end of the 18th century, the park became a military drill ground, where they erected monuments commemorating the victories of the Russian Army and where parades and military exercises took place regularly. After the February Revolution in 1917, the Field of Mars became a memorial area for the revolution's honoured dead. In the summer of 1942, as the city was besieged by the German army in the Siege of Leningrad, the park was covered with vegetable gardens to supply food. An eternal flame was lit in the centre of the park in 1957, in memory of the victims of various wars and revolutions.
Although James Clerk Maxwell made the first color photograph in 1861, the results were far from realistic until Prokudin-Gorsky perfected the technique with a series of improvements around 1905. His process used a camera that took a series of monochrome pictures in rapid sequence, each through a different colored filter. Prokudin-Gorskii then went on to document much of the country of Russia, travelling by train in a specially equipped darkroomrailroad car.
October 26, 2002 - Moscow theater hostage crisis: The police pumped anesthetic into the building, then stormed it from every entrance. The subsequent gunfight left 42 terrorists and 120 hostages dead.
Udmurt cuisine consists of the cuisine of Udmurtia and the Udmurt people, and is characterized by the rich use of local foods. Old traditions include foods made from grains and flour, especially milled rye, barley, wheat, and buckwheat. Meat, vegetables and black bread are staple foods in Udmurt cuisine. Additional foods include pelmeni, pancakes, pastries and small tarts. Milk is a scarce commodity, and that which exists is often made into ayran, a type of sour milk.
The Udmurt people have historically been involved in cattle breeding, agricultural production and hunting. Beekeeping is a common practice among the Udmurts and other groups in the area, and pig farming also exists. Potatoes, vegetables and flax are produced in significant quantities in Udmurtia. For total agricultural production in Russia, Udmurtia was ranked as 33rd. (Full article...)
Euler is held to be one of the greatest, most prolific mathematicians in history and the greatest of the 18th century. Several great mathematicians who produced their work after Euler's death have recognised his importance in the field as shown by quotes attributed to many of them: Pierre-Simon Laplace expressed Euler's influence on mathematics by stating, "Read Euler, read Euler, he is the master of us all." Carl Friedrich Gauss wrote: "The study of Euler's works will remain the best school for the different fields of mathematics, and nothing else can replace it." His 866 publications as well as his correspondences are being collected in the Opera Omnia Leonhard Euler which, when completed, will consist of 81 quartos. He spent most of his adult life in Saint Petersburg, Russia, and in Berlin, then the capital of Prussia. (Full article...)
... that the 1885 wreck of the cargo ship Dmitry was the inspiration for the arrival of Count Dracula in England in Bram Stoker's 1897 novel?
... that American horticulturalist Joseph Lancaster Budd traveled to England, France, Austria, Russia, and China in 1882 to discover fruit trees that could grow in Iowa?
... that the founder of the Guide to the Free World, helping people leave Russia after its invasion of Ukraine, said she was told: "It's good that you get out of Russia, but a pity that you won't be shot"?
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