File:Metric_standards_Rijksmuseum.jpg · Wikimedia Commons · See Wikimedia Commons
The metre is the standard unit used to measure length or distance in the metric system, and it's used worldwide in science, industry, and everyday life. Since 2019, it has been precisely defined based on how far light travels through a vacuum in a tiny fraction of a second, which ensures consistent and accurate measurements everywhere.
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Key facts
- Unit.name
- metre
- Unit.image
- Metric standards Rijksmuseum.jpg
- Unit.caption
- Historical replicas of metric standards, including an iron metre
- Unit.standard
- SI
- Unit.units2
- Nautical units
- Unit.inunits2
- ≈
- Unit.quantity
- length
- Unit.symbol
- m
- Unit.units1
- Imperial/US units
via Wikipedia infobox
Wikidata facts
- Part of
- MKS system of units
- Image
- Platinum-Iridium meter bar.jpg
Show 11 more facts
- unit symbol
- м
- different from
- meter
- Commons category
- Metre
- topic's main category
- Category:Metre
- conversion to SI unit
- 1
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- Wikidata SPARQL query equivalent
- wd:Q11573 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)
- subdivision of this unit
- decimetre
- conversion to standard unit
- 0.0006213711922373339
- calculated from
- second
- NCI Thesaurus ID
- C41139
Sources (8)
via Wikidata · CC0
Article · Deutsch
Der Meter ist die Basiseinheit der Länge im Internationalen Einheitensystem (SI) und in anderen metrischen Einheitensystemen. Ein Meter ist definiert als die Länge der Strecke, die das Licht im Vakuum während der Dauer von 1/299 792 458 Sekunde zurücklegt. Das Einheitenzeichen des Meters ist der Kleinbuchstabe „m“. Für dezimale Vielfache und Teile des Meters werden die internationalen Vorsätze für Maßeinheiten verwendet. Der Meter wurde 1799 als die Länge des Urmeters definiert, eines Prototyps aus Platin. Dessen Länge entsprach nach den damals durchgeführten Messungen dem zehnmillionsten Teil der Entfernung vom Nordpol zum Äquator. Die aktuelle Definition gilt seit 1983.
Abstract from DBpedia / Wikipedia · CC BY-SA
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