Cobalt | |
---|---|
State | Ontario |
Country | Canada |
Capital | |
Population | 1128 |
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.
Lebanon | |
---|---|
State | |
Country | |
Capital | |
Population | 0 |
Lebanon ( (listen); Arabic: لبنان, romanized: Lubnān, Lebanese Arabic pronunciation: [lɪbˈneːn]), officially known as the Lebanese Republic (Arabic: الجمهورية اللبنانية, romanized: al-Jumhūrīyah al-Lubnānīyah, Lebanese Arabic pronunciation: [lˈʒʊmhuːrijje lˈlɪbneːnijje]), is a country in the Levant region of Western Asia, and the transcontinental region of the Middle East. It is bordered by Syria to the north and east and Israel to the south, while Cyprus lies west across the Mediterranean Sea. Lebanon's location at the crossroads of the Mediterranean Basin and the Arabian hinterland has contributed to its rich history and shaped a cultural identity of religious and ethnic diversity. At just 10,452 km2 (4,036 mi2), it is the smallest recognized sovereign state on the mainland Asian continent. The official language, Arabic, is the most common language spoken by the citizens of Lebanon.The earliest evidence of civilization in Lebanon dates back more than seven thousand years, predating recorded history. Lebanon was home to the Phoenicians, a maritime culture that flourished for almost three thousand years (c. 3200–539 BC). In 64 BC, the Roman Empire conquered the region, and eventually became one of its leading centers of Christianity. The Mount Lebanon range saw the emergence of a monastic tradition known as the Maronite Church. As the Arab Muslims conquered the region, the Maronites held onto their religion and identity. However, a new religious group, the Druze, established themselves in Mount Lebanon as well, generating a religious divide that has lasted for centuries. During the Crusades, the Maronites re-established contact with the Roman Catholic Church and asserted their communion with Rome. These ties have influenced the region into the modern era.
Lebanon was conquered by the Ottomans in the 16th century and remained under their rule for the next 400 years. Following the empire's collapse after World War I, the five provinces constituting modern Lebanon came under the French Mandate.
Fort Smith is the name of: Fort Smith, Labrador, Canada, now known as North West River Fort...
Lisbon (; Portuguese: Lisboa [liʒˈβo.ɐ] (listen)) is the capital and the largest city of...
Anaheim () is a city in Orange County, California, part of the Los Angeles metropolitan area. As...
Fiorello Henry La Guardia (; born Fiorello Raffaele Enrico La Guardia, Italian pronunciation:...