Follows from the name that the nanoworld begins with the sizes in one billion part of meter, as a prefix nano - means ten in minus of the ninth degree. A human eye cannot make out nanoworld objects, their observation became possible only in 1931 when the electronic microscope was invented.
Instruction
1. Nanotechnologies became fashionable, speak about them also to the place, and out of place. it is translated""Nanos"" from Greek as the dwarf, therefore, the nanoworld is a dwarfish world. For this reason appropriate to speak a nanoparticle, that is a dwarfish particle, but nanoenergetics or nanoliquid - senseless definitions as there is no dwarfish power or dwarfish liquid.
2. Also you should not speak about nanotechnologies, when it comes to intratomic interaction and chemical technologies. Here operate with smaller sizes and measure everything in Angstroms - 10 in minus of the tenth degree.
3. Often to nanoobjects add objects from a microcosm, that is objects, one of the sizes of which exceeds 100 nanometers. The technology of use of such objects cannot call in any way nanotechnologies as then it will turn out that manipulations with soot are already nanotechnologies, the size of its particles is slightly more than 100 nanometers.
4. It is correct to apply definition "nanoworld" and "nanoobject" only to structures which size more than 1 nanometer in any direction and at the same time is more than several dozen nanometers, only in one direction. It is possible to carry various molecular clusters to such objects - astralena, nanotubes, fullerenes, fullerida and difficult molecules, for example, of DNA.
5. It is possible to present the size of objects of a nanoworld if to look at a usual human hair. Its average diameter - 0.05 mm, it in about sixty thousand times more, than the size of a usual object of a nanoworld.
6. Depth of paths on a usual compact disk - 100 nanometers, their width - 500 nanometers.
7. Nanometers use when they speak about the wavelength of visible light. A human eye distinguishes waves from 380 to 760 nanometers long.
8. Modern semiconductors contain elements of the sizes in 14 nanometers.
9. If 10 atoms of hydrogen to arrange on a straight line one after another, then length of such chain will be about 1 nanometer.