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What is the Nanotechnology. Nanotechnology may be known or not by some, and others may be afraid of it. Various concepts have emerged to define nanotechnology, there are those who describe nanotechnology as the technology capable of achieving high degrees of accuracy in the functions, sizes, shapes of materials and their components, and this helps to control the functions of the tools used in the fields of medical, industry, engineering, agriculture, drugs, communications, defense, space, etc. And others define it as the science of dealing with things smaller than themselves. The term "nanotechnology" is derived from the Greek language and means the mythical world of dwarfs, the infinitesimal, and nanotechnology means technology made on the nanometer scale, which is the smallest metric unit equivalent to one of a thousand millionth of a meter, that is, one of a billionth of a meter which is the most accurate metric unit known until now, and the nanometer is equivalent to ten times the atomic unit of measurement known as angstrom, and the nanometer is about 80,000 times smaller than the diameter of a hair's head, so it is truly a miniature technique.