picometre

Also known as pm, picometres

The picometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the International System of Units (SI), equal to , or one trillionth of a metre, which is the SI base unit of length.

AI overview

A picometre is an extremely tiny unit of measurement equal to one trillionth of a metre, used in the International System of Units. It's useful for measuring very small things like atoms and molecules, where such minuscule distances become relevant to scientific work.

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

Key facts

Unit.name: picometre
Unit.image: 200px
Unit.imageclass: skin-invert-image
Unit.caption: A simplified representation of a helium atom, having an estimated (calculated) diameter of 62 picometres
Unit.symbol: pm
Unit.standard: SI
Unit.quantity: length
Unit.units1: SI base units
Unit.units2: natural units
Unit.inunits2:      a0
Unit.units3: imperial/US units

via Wikipedia infobox

Wikidata facts

Show 4 more facts

conversion to standard unit: 0.000000000001
conversion to SI unit: 0.000000000001
unit symbol: pm
Wikidata SPARQL query equivalent: wd:Q192274 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)

Sources (1)

wikidata.org

via Wikidata · CC0

~1 min read

Article

2 sections

Contents

Use
References

The picometre is one thousand femtometres, one thousandth of a nanometre ( nm), one millionth of a micrometre (also known as a micron), one billionth of a millimetre, and one trillionth of a metre. The symbol μμ was once used for it. It is also one hundredth of an ångström, an internationally known (but non-SI) unit of length.