Mannheim vs Cobalt

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Mannheim (German pronunciation: [ˈmanhaɪm] (listen); Palatine German: Mannem or Monnem) is a Universitätsstadt (university town) in the southwestern part of Germany and the third-largest in the German state of Baden-Württemberg after Stuttgart and Karlsruhe with a 2019 population of approximately 310,700 inhabitants. The city is at the centre of the Rhine-Neckar Metropolitan Region and is Germany's eighth-largest metropolitan region. Mannheim is located at the confluence of the Rhine and the Neckar in the northwestern corner of Baden-Württemberg. The Rhine separates Mannheim from the city of Ludwigshafen, just to the west of it in Rhineland-Palatinate, and the border of Baden-Württemberg with Hesse is just to the north. Mannheim is downstream along the Neckar from the city of Heidelberg. Mannheim is unusual among German cities in that its streets and avenues are laid out in a grid pattern, leading to its nickname "die Quadratestadt" (the Square City). The eighteenth century Mannheim Palace, former home of the Prince-elector of the Palatinate, now houses the University of Mannheim.

The city is home to major corporations including Daimler, John Deere, Caterpillar, ABB, Fuchs Petrolub, IBM, Roche, Reckitt Benckiser, Unilever, Phoenix Group, Pepperl+Fuchs, Siemens, and several other well-known companies. In addition, Mannheim's SAP Arena is not only the home of the German ice hockey record champions the Adler Mannheim, but also the well-known handball team, the Rhein-Neckar Löwen. Since 2014, Mannheim has been a member of the UNESCO Creative Cities Network and holds the title of "UNESCO City of Music". Mannheim is a smart city; the city's electrical grid is installed with a power-line communication network.The city's tourism slogan is "Leben. Im Quadrat." (Life. In the Square.) The civic symbol of Mannheim is der Wasserturm (the Watertower), a Romanesque water tower completed in 1886 that rises to 60 metres (200 feet) above the highest point of the art nouveau area Friedrichsplatz. Mannheim is the starting and finishing point of the Bertha Benz Memorial Route.

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