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 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...)
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Oganesson is a synthetic chemical element; it has symbolOg and atomic number 118. It was first synthesized in 2002 at the Joint Institute for Nuclear Research (JINR) in Dubna, near Moscow, Russia, by a joint team of Russian and American scientists. In December 2015, it was recognized as one of four new elements by the Joint Working Party of the international scientific bodies IUPAC and IUPAP. It was formally named on 28 November 2016. The name honors the nuclear physicist Yuri Oganessian, who played a leading role in the discovery of the heaviest elements in the periodic table.
Oganesson has the highest atomic number and highest atomic mass of all known elements. On the periodic table of the elements it is a p-block element, a member of group 18 and the last member of period 7. Its only known isotope, oganesson-294, is highly radioactive, with a half-life of 0.7 ms and, as of 2025,[update] only five atoms have been successfully produced. This has so far prevented any experimental studies of its chemistry. Because of relativistic effects, theoretical studies predict that it would be a solid at room temperature, and significantly reactive, unlike the other members of group 18 (the noble gases). (Full article...)
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Rostislav between 1907 and 1916.
Rostislav was a pre-dreadnought battleship built by the Nikolaev Admiralty Shipyard in the 1890s for the Black Sea Fleet of the Imperial Russian Navy. She was conceived as a small, inexpensive coastal defence ship, but the Navy abandoned the concept in favor of a compact, seagoing battleship with a displacement of 8,880 long tons (9,022 t). Poor design and construction practices increased her actual displacement by more than 1,600 long tons (1,626 t). Rostislav became the world's first capital ship to burn fuel oil, rather than coal. Her combat ability was compromised by the use of 10-inch (254 mm) main guns instead of the de facto Russian standard of 12 inches (305 mm).
Her hull was launched in September 1896, but non-delivery of the ship's main guns delayed her maiden voyage until 1899 and her completion until 1900. In May 1899 Rostislav became the first ship of the Imperial Navy to be commanded by a member of the House of Romanov, Captain Alexander Mikhailovich. From 1903 to 1912 the ship was the flagship of the second-in-command of the Black Sea Fleet. During the 1905 Russian Revolution her crew was on the verge of mutiny, but ultimately remained loyal to the regime, and actively suppressed the mutiny of the cruiser Ochakov. (Full article...)
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Nadezhda Sergeyevna Alliluyeva (Russian: Надежда Сергеевна Аллилуева; 22 September [O.S. 9 September] 1901 – 9 November 1932) was the second wife of Joseph Stalin. She was born in Baku to a friend of Stalin, a fellow revolutionary, and was raised in Saint Petersburg. Having known Stalin from a young age, they married when she was 17, and had two children. Alliluyeva worked as a secretary for Bolshevik leaders, including Vladimir Lenin and Stalin, before enrolling at the Industrial Academy in Moscow to study synthetic fibres and become an engineer. She had health issues, which had an adverse impact on her relationship with Stalin. She also suspected he was unfaithful, which led to frequent arguments with him. On several occasions, Alliluyeva reportedly contemplated leaving Stalin, and after an argument, she fatally shot herself early in the morning of 9 November 1932. (Full article...)
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 Lapland and North Karelia. (Full article...)
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Manuscript miniature, part of double portrait with Empress Maria, Vatican Library
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.
Eager to restore his empire to its past glories as the great power of the Mediterranean world, Manuel pursued an energetic and ambitious foreign policy. In the process he made alliances with Pope Adrian IV and the resurgent West. He invaded the Norman Kingdom of Sicily, although unsuccessfully, being the last Eastern Roman emperor to attempt reconquests in the western Mediterranean. The passage of the potentially dangerous Second Crusade through his empire was adroitly managed. Manuel established a Byzantine protectorate over the Crusader states of Outremer. Facing Muslim advances in the Holy Land, he made common cause with the Kingdom of Jerusalem and participated in a combined invasion of FatimidEgypt. Manuel reshaped the political maps of the Balkans and the eastern Mediterranean, placing the kingdoms of Hungary and Outremer under Byzantine hegemony and campaigning aggressively against his neighbours both in the west and in the east. (Full article...)
At the beginning of the Russo-Japanese War of 1904–1905, Petropavlovsk took part in the Battle of Port Arthur, where she was lightly damaged by Japanese shells and failed to score any hits in return. On 13 April 1904, the ship sank after striking one or more mines near Port Arthur, in northeast China. Casualties numbered 27 officers and 652 enlisted men, including Vice AdmiralStepan Makarov, the commander of the squadron, and the war artistVasily Vereshchagin. The arrival of the competent and aggressive Makarov after the Battle of Port Arthur had boosted Russian morale, which plummeted after his death. (Full article...)
He led the team that made the first crossing of the Greenland interior in 1888, traversing the island on cross-country skis. He won international fame after reaching a record northern latitude of 86°14′ during his Fram expedition of 1893–1896. Although he retired from exploration after his return to Norway, his techniques of polar travel and his innovations in equipment and clothing influenced a generation of subsequent Arctic and Antarctic expeditions. He was elected an International Member of the American Philosophical Society in 1897. (Full article...)
The Gurian Republic was an insurgent community that existed between 1902 and 1906 in the western Georgian region of Guria (known at the time as the Ozurget Uyezd) in the Russian Empire. It rose from a revolt over land grazing rights in 1902. Several issues over the previous decades affecting the peasant population including taxation, land ownership and economic factors also factored into the start of the insurrection. The revolt gained further traction through the efforts of Georgian social democrats, despite some reservations within their party over supporting a peasant movement, and grew further during the 1905 Russian Revolution.
During its existence, the Gurian Republic ignored Russian authority and established its own system of government, which consisted of assemblies of villagers meeting and discussing issues. A unique form of justice, where trial attendees voted on sentences, was introduced. While the movement broke from imperial administration, it was not anti-Russian, desiring to remain within the Empire. (Full article...)
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The Norslunda runestone bearing runic inscription U 419, which mentions the personal name Kylfingr The Kylfings (Old NorseKylfingar; EstonianKalevid; HungarianKölpények; Old East Slavic Колбяги, Kolbiagi; Byzantine Greek Κουλπίγγοι, Koulpingoi; Arabical-Kilabiyya) were a people of uncertain origin active in Northern Europe during the Viking Age, roughly from the late ninth century to the early twelfth century. They could be found in areas of Lapland, Russia, and the Byzantine Empire that were frequented by Scandinavian traders, raiders and mercenaries. Scholars differ on whether the Kylfings were ethnically Finnic or Norse. Also disputed is their geographic origin, with Denmark, Sweden and the Eastern Baltic all put forward as candidates. Whether the name Kylfing denotes a particular tribal, socio-political, or economic grouping is also much debated.
Due to the length of the front lines created by the German 1942 summer offensive, which had aimed at taking the Caucasus oil fields and the city of Stalingrad, German and other Axis forces were over-extended. The German decision to transfer several mechanized divisions from the Soviet Union to Western Europe exacerbated their situation. Furthermore, Axis units in the area were depleted by months of fighting, especially those which had taken part in the struggle for Stalingrad. The Germans could only count on the XXXXVIII Panzer Corps, which had the strength of a single panzer division, and the 29th Panzergrenadier Division as reserves to bolster their Romanian allies guarding the German Sixth Army's flanks. These Romanian armies lacked the heavy equipment to deal with Soviet armor. In contrast, the Red Army deployed over one million personnel for the offensive. Soviet troop movements were not without problems: concealing their build-up proved difficult, and Soviet units commonly arrived late due to logistical issues. Operation Uranus was first postponed by the Soviet high command (Stavka) from 8 to 17 November, then to 19 November. (Full article...)
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Launch of Izmail in 1915
The Borodino-class battlecruisers (Russian: Линейные крейсера типа «Измаил») were a group of four battlecruisers ordered by the Imperial Russian Navy before World War I. Also referred to as the Izmail class, they were laid down in late 1912 at Saint Petersburg for service with the Baltic Fleet. Construction of the ships was delayed by a lack of capacity among domestic factories and the need to order some components from abroad. The start of World War I slowed their construction still further, as the imported components were often not delivered and domestic production was diverted into areas more immediately useful for the war effort.
Three of the four ships were launched in 1915 and the fourth in 1916. Work on the gun turrets lagged, and it became evident that Russian industry would not be able to complete the ships during the war. The Russian Revolution of 1917 halted all work on the ships, which was never resumed. Although some consideration was given to finishing the hulls that were nearest to completion, the three furthest from completion were sold for scrap by the Soviet Union during the early 1920s. The Soviet Navy proposed to convert Izmail, the ship closest to completion, to an aircraft carrier in 1925, but the plan was cancelled after political manoeuvring by the Red Army cut funding and she was eventually scrapped in 1931. (Full article...)
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.
Charles Minard's Carte figurative (1869), which details the losses of men, the position of the army, and the freezing temperatures on Napoleon's disastrous 1812 invasion of Russia. Created in an effort to show the horrors of war, the graph "defies the pen of the historian in its brutal eloquence" and has been called the best statistical graphic ever drawn.
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.
The Bolshoi Theatre is a historic theatre in Moscow, Russia, which holds ballet and opera performances. The company was founded on 28 March [O.S. 17 March] 1776, when Catherine the Great granted Prince Pyotr Urusov a licence to organise theatrical performances, balls and other forms of entertainment. Usunov set up the theatre in collaboration with English tightrope walker Michael Maddox. The present building was built between 1821 and 1824 and designed by architect Joseph Bové.
Ivan Goremykin (1839–1917) was a Russian prime minister during World War I. A politician with archconservative views, after some time in the Ministry of Justice, he transferred to the Ministry of the Interior in 1891. He held the rank of prime minister from May to July 1906 and again from 1914 to 1916; during both terms his effectiveness was strongly limited by opposition from the State Duma. In the aftermath of the October Revolution, Goremykin was recognized as a member of the Tsarist government and killed by a street mob.
The Portrait of Chaliapin is an oil-on-canvas painting by Boris Kustodiev, produced in 1921. Feodor Chaliapin was a Russian opera singer; possessing a deep and expressive bass voice, he enjoyed an important international career at major opera houses. He is depicted here wearing an expensive fur coat, which had come from a Soviet warehouse containing items confiscated from rich people during the Russian Revolution, and which he had received in lieu of payment for a performance. The background shows festivities at the traditional folk holiday of Maslenitsa. Dressed in a smart suit and holding a cane, Chaliapin is portrayed as having risen above his contemporaries. His favourite dog is at his feet and, at the bottom left, his two daughters stroll on the festive square in front of a poster promoting his concert. This copy of the painting is in the collection of the Russian Museum in Saint Petersburg.
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.
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.
Sadko is a character in the Russian medieval epic Bylina. An adventurer, merchant and gusli musician from Novgorod, Sadko becomes wealthy with the help of the Sea Tsar, but is thrown in the sea when he fails to pay the Sea Tsar his due respects. This story was widely adapted in the 19th century, including in a poem by Alexei Tolstoy and an opera by Nikolai Rimsky-Korsakov.
Shown here is Sadko in the Underwater Kingdom, an 1876 painting by Ilya Repin. It depicts Sadko meeting the Sea Tsar under the sea.
The Solovetsky Monastery is a Russian Orthodox monastery in Solovetsky, Arkhangelsk, Russia. Founded in 1436 by the monk Zosima, the monastery grew in power into the 16th century, becoming an economic and political center of the White Sea region and eventually hosting 350 monks. After the Bolshevik Revolution, Soviet authorities closed down the monastery and incorporated many of its buildings into Solovki prison camp, one of the earliest forced-labor camps of the gulag system. The camp closed after the region's trees had been harvested. Today the monastery has been re-established, and also serves as a museum.
Maslenitsa, a 1919 painting depicting the carnival of the same name, which takes place the last week before Great Lent. The painting encompasses a broad range of things associated with Russia, such as snowy winter weather, a troika, an Orthodox church with onion domes. Painted in the aftermath of the October Revolution, the canvas was intended as a farewell to the unspoilt "Holy Russia" of yore.
The first mentions of pastila in Russian written sources date back to the 16th century. The name is probably a loanword from Italian: pastello or pastiglia, or from the cognate French: pastille which in turn comes from Latin: pastillus (a loaf or pie, cf. pastilla). (Full article...)
Vladimir Vladimirovich Putin (born 7 October 1952) is a Russian politician and former intelligence officer who has served as President of Russia since 2012, having previously served from 2000 to 2008. Putin also served as Prime Minister of Russia from 1999 to 2000 and again from 2008 to 2012. He is the longest-serving Russian president since the independence of Russia from the Soviet Union.
North Korea confirms the deployment of their soldiers to Russia, a day after Russia confirmed the presence of North Korean soldiers fighting alongside them. (Reuters)
... that former Czech Army doctor Marek Obrtel returned his military decorations from NATO operations in 2014, citing his pro-Russian and anti-American views?
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