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...)
The tiger (Panthera tigris) is a large cat and a member of the genus Panthera native to Asia. It has a powerful, muscular body with a large head and paws, a long tail and orange fur with black, mostly vertical stripes. It is traditionally classified into nine recentsubspecies, though some recognise only two subspecies, mainland Asian tigers and the island tigers of the Sunda Islands.
William FeinerSJ (born Wilhelm Feiner; December 27, 1792 – June 9, 1829) was a German Catholic priest and Jesuit who became a missionary to the United States and eventually the president of Georgetown College, now known as Georgetown University.
Antarctica (/ænˈtɑːrktɪkə/ⓘ) is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of 14,200,000 km2 (5,500,000 sq mi). Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of 1.9 km (1.2 mi).
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 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...)
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...)
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 marine mammals because of 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...)
Nadezhda Vasilievna Stasova (Russian: Надежда Васильевна Стасова; June 24 [O.S. June 12] 1822 – October 9 [O.S. September 27] 1895) was a Russian educator, activist, and feminist of the 19th century.
Stasova was born into a noble and wealthy family; Tsar Alexander I of Russia was her godfather, and she received extensive private tutoring as a child. After experiencing family tragedy and personal disappointment as a young woman, she dedicated herself to women's education and economic empowerment. Alongside Anna Filosofova and Maria Trubnikova, Stasova was one of the earliest leaders of the Russian women's movement. Together, the three friends and allies were referred to as the "triumvirate". (Full article...)
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...)
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...)
The sculpture depicts a female personification of Russia, commonly referred to as Mother Russia. She wears a windswept shawl resembling wings, and holds a sword aloft in her right hand. Her left hand is extended outward, as she calls upon the Soviet people to battle. The statue was originally planned to be made of granite and to stand only 30 metres (98 ft) tall, with a design consisting of a Red Army soldier genuflecting and placing a sword before Mother Russia holding a folded banner. However, the design was changed in 1961 to be a large concrete structure at nearly double the height, a decision that was subject to criticism from Soviet military officials and writers. It was inspired by the Winged Victory of Samothrace, an ancient Greek sculpture of the goddess of victory, Nike. (Full article...)
Named for the siege of Sevastopol during the Crimean War, the ship was commissioned into the First Pacific Squadron of the Russian Pacific Fleet and was stationed at Port Arthur (today Lüshunkou District, Dalian, Liaoning, China), a Russian naval base acquired from China in 1898 as part of the Kwantung Leased Territory. One of the first ships to use Harvey nickel-steel armor and Popov radios, she displaced 11,854 long tons (12,044 t) at full load and was 369 feet (112.5 m) long overall, and mounted a main battery of four 12-inch (305 mm) guns in two twin turrets. She was laid down in May 1892, launched on 1 June 1895 and completed in 1899. Her sea trials lasted until 1900. (Full article...)
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With the pale yellow rump visible. Buryatia, Russia.
Pallas's leaf warbler is one of the smallest Palearcticwarblers, with a relatively large head and short tail. It has greenish upperparts and white underparts, a lemon-yellow rump, and yellow double wingbars, supercilia and central crown stripe. It is similar in appearance to several other Asian warblers, including some that were formerly considered to be subspecies of it, although its distinctive vocalisations aid identification. (Full article...)
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.
Barge Haulers on the Volga is an oil painting on canvas completed between 1870 and 1873 by the realist artist Ilya Repin. It depicts eleven men physically dragging a barge on the banks of the Volga River. Depicting these men as at the point of collapse, the work has been read as a condemnation of profit from inhumane labor. Barge Haulers on the Volga drew international praise for its realistic portrayal of the hardships of working men, and launched Repin's career. It has been described as "perhaps the most famous painting of the Peredvizhniki movement [for]....its unflinching portrayal of backbreaking labor". Today, the painting hangs in the Russian Museum in Saint Petersburg.
The Tauride Palace is one of the largest and most historic palaces in Saint Petersburg, Russia. It was designed by Ivan Starov for Prince Grigory Potemkin, and was constructed between 1783 and 1789. After the owner's death, it was purchased by Catherine the Great, who constructed a theatre in the east wing and a church in the west wing. Many improvements were also made to the grounds, including construction of the Admiralty Pavilion, the gardener house, the orangery, glass-houses, bridges, and ironwork fences. Although the exterior of the building was rather plain, the interior was very luxurious. More recently, the building housed the first Imperial State Duma (1906–1917) and the post-revolution provisional government.
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.
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 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.
Saint Michael's Castle is a former royal residence in the historic centre of Saint Petersburg, Russia. It was built for Emperor Paul I between 1797 and 1801, and named after Saint Michael, the patron saint of the royal family. Constructed like a castle around a small octagonal courtyard, the four facades were built in different architectural styles, including French Classicism, Italian Renaissance and Gothic. The emperor was assassinated in the castle forty days after taking up residence. After his death, the imperial family returned to the Winter Palace and the building was transferred to the Russian Army's Main Engineering School. In 1990, it became a branch of the Russian Museum, and now houses its portrait gallery.
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.
A map detailing the events of the 2008 South Ossetia war, which began one year ago today, when Georgia launched an operation in the disputed region of South Ossetia. Ossetian, Russian, and Abkhazian forces ejected the Georgian forces after five days of heavy fighting. All parties reached a ceasefire agreement on August 12, and Russian troops remain stationed in Abkhazia and South Ossetia to this day.
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.
Tushonka can be used and preserved in extreme situations, and therefore is a part of military food supplies in the CIS. For the people of the Soviet Union, tushonka was a part of military and tourist food supplies; at some extreme periods of time it could be bought only with food stamps. (Full article...)
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...)
... that American teacher Marc Fogel was sentenced to 14 years in Russian prison for possessing a small amount of marijuana, but has gotten little public attention compared to Brittney Griner?
... that Michael S. Farbman's reporting of the Russian Civil War in winter 1917–18 was described by The Observer as "one of the outstanding successes of the time in special correspondence"?
... that Russian money, known as qiang tie by locals, was used as legal currency in some regions of China for decades?
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