After gold a metals and important elements that exist in nature percentage in limited quantities to the rest of the elements such as iron, for example, hence gained the gold value and importance among the people, a component of the chemical elements symbolized by the symbol Au and atomic number 79 in the periodic table, and qualities that element Lin and yellow color and shiny and a little wear and soft and is one of the most elements of the density, and because of all the previous characteristics used cash as currency in ancient States to paper currencies have emerged in the modern era being printed in specialized presses gold, but with the advent of this type of currency, however, gold is still the which gives the value of banknotes in any state which, value of currency derived from the monetary base actress and gold used by the international monetary Fund and the Bank for international settlements. In addition to the financial Asestkhaddamath, gold used in the jewelery industry, which adorn the woman's body and give beautiful and throw it over the mace, in addition to its use in jewelery, which also belong to men. Gold found in the bottoms of rivers or in the ground, and it is often combined with other elements such as lead, copper, where being purified gold, which suspended him from the dust and the dust and dirt when it is extracted from the ground, for Ytriv very strong water currents are clean it and purified so that it stays gold crude, but mercury is also well placed in the process of dissolving the gold is then redeem gold from mercury distillation. In addition, gold could be extracted without the intention in doing so when they are extracted metals and other elements as silver, for example. Can distinguish the original gold from other metals in several tests, including mass, as can be measured in two different blocs of the pieces to be tested, but requires be from the same size, when measuring the piece with less mass is hyperbolic non-native. But it was possible to manipulate the mass of the pieces so they look the same real mass. The second method used a stamp or seal, where stamped piece of gold on behalf of the manufacturer, caliber, the HPA can be used for it. You can also biting a piece of gold teeth, the left impact on the gold piece they be original, but the disadvantage of this piece they make an impact can not remove the gold piece, which spoil the landscape. You can also use vinegar in gold does not react with oxygen or with the acid because it has a high density, the event and interacted piece they are counterfeit. Finally, the examiner can use the magnet piece gravitated to him they are not from the original gold. And to mention the majority of the previous methods can be manipulated so you should pay attention.
ليست هناك تعليقات:
إرسال تعليق