nanometre

Also known as nm, nanometres

thumb|330px|Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales. The nanometre is often used to express dimensions on an atomic scale and mostly in the molecular scale. The nanometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: nm), or nanometer (American spelling), is a unit of length in the International System of Units (SI), equal to one billionth (short scale) or one thousand millionth (long scale) of a metre (0.000000001 m) and to 1000 picometres. One nanometre can be exp

AI overview

A nanometre is a unit of length equal to one billionth of a metre, used to measure extremely small distances on the atomic and molecular scale. It matters because many natural structures—like atoms and molecules—are sized in nanometres, making it the practical measurement system for understanding and working with materials at these tiny scales.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Unit.name: nanometre
Unit.image: Chiraltube.png
Unit.caption: One nanometric carbon nanotube, photographed with scanning tunnelling microscope
Unit.symbol: nm
Unit.standard: SI
Unit.quantity: length
Unit.units1: SI units
Unit.inunits1: &emsp;&emsp;&emsp;
Unit.units2: Natural units
Unit.inunits2: &emsp;
Unit.units3: imperial/US units

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Wikidata facts

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conversion to standard unit: 0.001
conversion to SI unit: 0.000000001
unit symbol: nm
Wikidata SPARQL query equivalent: wd:Q178674 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)

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Article

6 sections

Contents

History
Etymology
Usage
Unicode
References
External links

==History== The nanometre was formerly known as the "millimicrometre" – or, more commonly, the "millimicron" for short – since it is of a micrometre. It was often denoted by the symbol mμ or, more rarely, as μμ (however, μμ should refer to a millionth of a micron).