Definition of iron: 1, metal element, symbol Fe (iron). 2. Refers to knives and guns. 3. Hard description; Strong; Firm.
Iron characters: iron man, iron drum, railway, iron tower, iron ox, chain, iron fork, steel.
A brief history of research:
Humans first discovered that iron is a meteorite falling from the sky, and the percentage of iron in meteorites is very high (90.85% in iron meteorites), which is a mixture of iron, nickel and cobalt.
Archaeologists once found an axe made of meteorites in the ancient tomb; As early as 4000 years ago, in the religious scriptures hidden in the pyramids of the fifth to sixth dynasties in ancient Egypt, it was recorded that the thrones of important gods such as the sun god were made of iron. Iron was considered as the most mysterious precious metal at that time, and the Egyptians simply called it "Shi Tian". In ancient Greek, "star" and "iron" are the same word.