Gold is a simple form of chemical element gold, which is a soft, golden yellow and corrosion-resistant precious metal. Gold is a rarer, more precious and more valuable metal. Generally speaking, the gold in the world is in ounces. In ancient China, gold was measured in ounces, which was a very important metal.
It is not only a special currency for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communication and aerospace industry. The chemical symbol of gold is Au, and the financial English code is XAU or gold. The name Au comes from a story of Aurora, the goddess of dawn in Roman mythology, which means shining dawn.
Its own physical characteristics
1, color: the steam released when gold is melted is yellow-green, and its gold powder is generally brown when it is smelted. If it is cast into thin slices, it can transmit green light.
2, ductility: unusually strong, 1 ounce of gold can be pulled to 50 miles long. Its ductility makes it easy to cast, and it is a good choice for making jewelry. Of all metals, gold has the greatest pulling force.
3. Forgibility: second to none, it can produce extremely thin and easy-to-roll gold sheets. Gold weighing 65,438+0 ounces can be hammered down to 65,438+0 feet in an area of 4 million square feet and 65,438+000 square feet. The ancients hammered it into thin slices and spread it in temples and palaces for decoration, which can explain the flexibility and ductility of gold.
Above content reference: Baidu Encyclopedia-Gold