Cobalt vs Amsterdam

Informations

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

Informations

Amsterdam (, UK also; Dutch: [ɑmstɛrˈdɑm] (listen)) is the capital and most populous city of the Netherlands with a population of 872,680 within the city proper, 1,558,755 from the metropolitan region and 2,480,394 from the metropolitan area. Located within the province of North Holland, Amsterdam is colloquially referred to as the"Venice of the North", attributed by the large number of canals that form a UNESCO World Heritage Site. Amsterdam's name derives from Amstelredamme, indicative of the town's origin around a dam in the river Amstel. Originating as a small fishing village in the late 12th century, Amsterdam became one of the most important ports in the world during the Dutch Golden Age of the 17th century, and became the leading centre for trade and finance. In the 19th and 20th centuries, the city expanded and many new neighbourhoods and suburbs were planned and built. The 17th-century canals of Amsterdam and the 19--20th century Defence Line of Amsterdam are on the UNESCO World Heritage List. Sloten, annexed in 1921 from the municipality of Amsterdam, is the oldest part of town, dating to the 9th century. Amsterdam's main attractions include its historic canals, the Rijksmuseum, the Van Gogh Museum, the Stedelijk Museum, Hermitage Amsterdam, the Concertgebouw, the Anne Frank House, the Scheepvaartmuseum, the Amsterdam Museum, the Heineken Experience, the Royal Palace of Amsterdam, Natura Artis Magistra, Hortus Botanicus Amsterdam, NEMO, the red-light district and Several cannabis coffee shops. It drew over 5 million international visitors in 2014. The city is also well known for its nightlife and festival activity; with several of its clubs (Melkweg, Paradiso) among the world's most famous. Primarily known for its artistic heritage, elaborate canal system and narrow houses with gabled façades; well-preserved legacies of the town's 17th-century Golden Age.

These attributes are arguably responsible for bringing millions of Amsterdam's visitors yearly. Cycling is vital to the city's character, and there are a lot of bike paths. The Amsterdam Stock Exchange is considered the earliest"modern" securities market stock exchange in the world. As the industrial capital of the Netherlands and among the top financial centres in Europe, Amsterdam is considered an alpha world city by the Globalization and World Cities (GaWC) research group. The city is also the cultural capital of the Netherlands. Many large Dutch institutions have their headquarters in the city, such as: the Philips conglomerate, AkzoNobel, Booking.com, TomTom, and ING. Moreover, many of the world's biggest companies are located in Amsterdam or have established their European headquarters in the city, such as leading technology companies Uber, Netflix and Tesla. In 2012, Amsterdam was ranked the second best city to live in by the Economist Intelligence Unit (EIU) and 12th globally on quality of living for infrastructure and environment by Mercer. The city was ranked 4th place globally as top tech hub in the Savills Tech Cities 2019 report (2nd in Europe), and 3rd in innovation by Australian innovation agency 2thinknow in their Innovation Cities Index 2009. The Port of Amsterdam is the fifth largest in Europe. The KLM hub and Amsterdam's key airport: Schiphol, is the Netherlands' busiest airport in addition to the third largest in Europe and 11th busiest airport in the world. The Dutch capital is considered one of the most multicultural cities in the world, with at least 177 nationalities represented.A few of Amsterdam's notable residents throughout history include: painters Rembrandt and Van Gogh, the diarist Anne Frank, and philosopher Baruch Spinoza.

Source: Wikipedia