الخميس، 4 نوفمبر، 2010
The discovery of gold
Gold is a very precious metal and chemical element that has the symbol Au, atomic number 79 in the periodic table. And called his condition before the multiplication of natural b gold dust. Lin and a bright yellow color, when used as a criticism of many peoples, civilizations and nations, as it is used in the manufacture of jewelry and gems. Exists in nature in the form of granules within the rock in the river beds, or in the form of veins in the ground, and often there is gold with other metals such as copper, lead, and discovered the largest mass of gold in Australia in 1896, weighed 2.280 ounces, and the advantage of gold low wear and softness It is also one of the most chemical-intensive items.
Last gold and has a lot at the Pharaohs They were making coffins from their kings and their vehicles as they made him a mask of the most beautiful masks of humanity was made of pure gold of the Pharaoh Tutankhamun.And a gold monetary base used by the International Monetary Fund (IMF) and Bank for International Settlements (BIS) and the Gold Astamlat other is used in dentistry and electronics.