What does nm mean?
Glossary DefinitionThe SI unit nanometer (nm) is a unit of length equal to one billionth of a meter. It is the unit of measurement used to measure visible light and other nearby wavelengths of the electromagnetic spectrum.
The SI unit nanometer (nm) is a unit of length equal to one billionth of a meter. It is the unit of measurement used to measure visible light and other nearby wavelengths of the electromagnetic spectrum.