Turku vs Cobalt

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Turku ( TOOR-koo; Finnish: [ˈturku] (listen); Swedish: Åbo [ˈǒːbʊ] (listen), Finland Swedish: [ˈoːbu] (listen); Latin: Aboa; Russian: Турку, formerly Або) is a city and former capital on the southwest coast of Finland at the mouth of the Aura River, in the region of Finland Proper (Varsinais-Suomi) and the former Turku and Pori Province (Turun ja Porin lääni; 1634–1997). The region was originally called Suomi (Finland), which later became the name for the whole country. As of 30 September 2018, the population of Turku was 191,499 making it the sixth largest city in Finland after Helsinki, Espoo, Tampere, Vantaa and Oulu. There were 330,192 inhabitants living in the Turku sub-region, ranking it as the third largest urban area in Finland after the Greater Helsinki area and Tampere sub-region. The city is officially bilingual as 5.2 percent of its population identify Swedish as a mother-tongue.It is unknown when Turku gained city rights. The Pope first mentioned the town Aboa in his Bulla in 1229 and the year is now used as the foundation year of Turku. Turku is the oldest city in Finland, and served as the most important city of the eastern part of the Kingdom of Sweden (modern-day Finland). After the Finnish war, Finland became an autonomous grand duchy of the Russian Empire in 1809. Turku lost its status as capital of the Grand Duchy in 1812, when Tsar Alexander I of Russia decided to move the capital to Helsinki.

It was only after the last great fire in 1827 that most governmental institutions were moved to Helsinki along with the Royal Academy of Turku (Turun Akatemia) founded in 1640, which then became the University of Helsinki. Turku continued to be the most populous city in Finland until the end of the 1840s, and it remains the regional capital and an important business and cultural center and port. Because of its long history, it has been the site of many important events, and has extensively influenced Finnish history. The history of the country is closely linked to Turku, the former capital. Along with Tallinn, the capital city of Estonia, Turku was designated the European Capital of Culture for 2011. In 1996, it was declared the official Christmas City of Finland. Also, Turku has been officially declared the "Food Capital of Finland", because it holds a number of Finland's oldest and high-qualited restaurants, including the country's top-rated Indian restaurant Delhi Darbar, and a historically famous fish market held twice a year.Due to its location, Turku is a notable commercial and passenger seaport with over three million passengers traveling through the Port of Turku each year to Stockholm and Mariehamn.

Source: Wikipedia

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Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Cobalt-based blue pigments (cobalt blue) have been used since ancient times for jewelry and paints, and to impart a distinctive blue tint to glass, but the color was later thought to be due to the known metal bismuth. Miners had long used the name kobold ore (German for goblin ore) for some of the blue-pigment-producing minerals; they were so named because they were poor in known metals, and gave poisonous arsenic-containing fumes when smelted. In 1735, such ores were found to be reducible to a new metal (the first discovered since ancient times), and this was ultimately named for the kobold. Today, some cobalt is produced specifically from one of a number of metallic-lustered ores, such as cobaltite (CoAsS). The element is, however, more usually produced as a by-product of copper and nickel mining.

The copper belt in the Democratic Republic of the Congo (DRC) and Zambia yields most of the global cobalt production. World production in 2016 was 116,000 metric tons (114,000 long tons; 128,000 short tons) (according to Natural Resources Canada), and the DRC alone accounted for more than 50%.Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. The compounds cobalt silicate and cobalt(II) aluminate (CoAl2O4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes. Cobalt occurs naturally as only one stable isotope, cobalt-59. Cobalt-60 is a commercially important radioisotope, used as a radioactive tracer and for the production of high-energy gamma rays. Cobalt is the active center of a group of coenzymes called cobalamins. Vitamin B12, the best-known example of the type, is an essential vitamin for all animals. Cobalt in inorganic form is also a micronutrient for bacteria, algae, and fungi.

Source: Wikipedia