🌐EnglishEnglishDeutschFrançaisNederlandsPortuguêsSvenskaРусскийالعربية日本語EntityQ25381355· pop 5vertical planeplane parallel to the gradient of the gravitation fieldAvailable in 5 languagesFrançaisРусскийNorwegian NynorskSvenskavia Wikidata sitelinks · CC0Connectionsvertical and horizontalEntity