nanometre

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nanometre

unit of measurement

Also known as: nm

Learn about this topic in these articles:

electromagnetic radiation

In spectroscopy: Basic features of electromagnetic radiation
…units of angstroms or in nanometres. One angstrom (abbreviated by the symbol Å) is 10⁻¹⁰ metre, which is also the typical diameter of an atom. One nanometre (nm) is 10⁻⁹ metre. The micrometre (μm), which equals 10⁻⁶ metre, is often used to describe infrared radiation.
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