History of gold discovery
Gold is one of the most precious metals known to man. Its history dates back to the peoples of the Middle East. One of the oldest discovered gold jewelry is that of the ancient Egyptians, where a collection of gold jewelry and tools was discovered. Pharaohs make coffins of gold and they also make crowns and golden masks of kings. And gold is a component of metals yellow and shiny color and gold is called in its normal state before it is refined and formulated as the name of the (fin) and is very high density as it is the most intensive chemical elements, and it is characterized by its softness and lack of erosion, It is symbolically labeled in the periodic table with the symbol (Au). (324 kJ / m), evaporation temperature (324 kJ / mol), melting temperature (12.55 kJ / m), thermal capacity at (25 o) = (25.418) m.Klvin (per joule).
Uses of gold
Gold has many uses: the currency instrument, which is the monetary base used by the International Monetary Fund and the Bank for International Settlements, and gold is used in the manufacture of gold coins and bullion, in the jewelry industry, in the decoration and in the paint as in the coating of spacecraft As it protects it from the sun (for example, because gold has a high reflectivity of red and infrared radiation and reflectivity of ultraviolet radiation and visible radiation to a certain extent), and is also used in the textile industries, the manufacture of gold teeth, and also enters gold in the treatment Some types of cancer here use what is known as irradiated gold, and in some electronic industries, and also in some cosmetics such as gold mask.
What gold symbolizes?
Gold symbolizes the power and wealth of the peoples. The mineral, besides being of high physical value, is an authentic color that does not change with time and is not influenced by weather factors. It lives for many years without being influenced by variable atmospheric factors.