Tampere vs Cobalt

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Tampere (, US also , Finnish: [ˈtɑmpere] (listen); Swedish: Tammerfors [tɑmːærˈforsː] (listen); Latin: Tammerforsia) is a city in Pirkanmaa in the western part of Finland. Tampere is the most populous inland city in the Nordic countries; it has a population of 238,140 with the urban area holding 334,112 people and the metropolitan area, also known as the Tampere sub-region, holding 385,301 inhabitants in an area of 4,970 km2 (1,920 sq mi). Tampere is the second-largest urban area and third most-populous individual municipality in Finland, after the cities of Helsinki and Espoo and the most populous Finnish city outside the Greater Helsinki area, within which both Helsinki and Espoo are located. Tampere is a major urban, economic, and cultural hub for central Finland.Tampere is wedged between two lakes, Näsijärvi and Pyhäjärvi. Since the two lakes differ in level by 18 metres (59 ft), the rapids linking them, Tammerkoski, have been an important power source throughout history, most recently for generating electricity. Tampere is dubbed the "Manchester of the North" for its industrial past as the former center of Finnish industry, and this has given rise to its Finnish nickname "Manse" and terms such as "Manserock".

Also, Tampere has been officially declared the "Sauna Capital of the World", because it has the most public saunas in the world.Helsinki is approximately 160 kilometres (100 mi) south of Tampere, and can be reached in 1 hr, 31 minutes by Pendolino high-speed rail service and 2 hours by car. The distance to Turku is roughly the same. Tampere–Pirkkala Airport is Finland's eighth-busiest airport, with over 230,000 passengers in 2017. Tampere also serves as an important transit route for three Finnish highways: Highway 3 (E12), Highway 9 (E63) and Highway 12. Tampere ranked 26th in the list of 446 cities in the world's hipster cities, and it has often been rated as the most popular city in Finland.By 2021, a new multi-purpose sports and entertainment center, Tampere Deck Arena, is nearing completion.

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