Question

what is nanometer???
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Answer 1

A nanometer (nm) is a metric unit of spatial measurement that is one billionth (1×10-9) of a meter. It is commonly used in nanotechnology, the building of extremely small machines. ... Coating thickness is often measured in nanometer scale, and corrosion progression can also be measured in nanometers.

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Answer 2

Answer:

nm is a unit of length.

Explanation:

1nm = 10^-9m

or

1nm = 10 Angstrom