The iron
Iron is a chemical element and belongs to the minerals and atomic number 26, iron is the most elements presence in the land of the cluster one hand, and the fourth most elements of a presence on the earth's crust and the sixth Aasr abundance in the whole universe, and the origin of the iron component to the space earth was originally not contain iron revealed theories scientific Aldeth that iron has come down to earth except meteorites that were falling in the formative period, and considers this discovery a miracle Quranic as the Holy Quran mentioned this before the discovery of one thousand and four hundred years of God Almighty says in Surat iron: "and We have revealed the most pressing The hands of the very considerable benefits to the people and God knows Inzareth and messengers of the unseen God is strong Aziz. "
Iron is one of the most widely used elements, especially in engineering applications such as construction and others for its great strength and availability on the planet. In fact, the iron is silver in color but its rust can lead to its appearance in copper. Some materials are added or painted to prevent it from oxidation. The other materials are iron-carbon to increase its hardness and form what is known as steel, which is used in construction, roads, bridges and other engineering applications.
The discovery of the iron element is primarily due to the pre-history of the use of iron four thousand years BC, until the militants who lived in Turkey in the fourteenth century BC are the first to use the iron skillfully, they manufactured weapons and various tools of this element, and in the tenth century BC Most of the countries at that time used iron, which is known as the Iron Age. The development of iron was continued and discovered until the steel was first manufactured in the Iron Age around three centuries BC. Nowadays, there are many ways of manufacturing iron and its uses. Iron cast iron is produced from high temperature furnaces with a high percentage of carbon. It is used in applications that are not subjected to many shocks for easy breakage, such as cooking tools. For example, wrought iron has a lower carbon ratio than cast iron It is used in applications such as the reinforcement of buildings, and steel is also used in the manufacture of ships, bridges and cars to hardness and withstand shocks. In addition to the various uses of iron, it is also an essential element in the bodies of organisms. Animals can not live without it. It enters the structure of red blood cells that carry oxygen in the blood to the rest of the cells of the body. The iron content in the human body is about 2 grams, Between 1-2 milligrams of iron a day, which is compensated by food such as red meat, pulses and spinach.
