🌐EnglishEnglishEspañolFrançaisPortuguêsSvenskaРусскийالعربيةفارسی한국어中文日本語EntityQ3366867· pop 12· linked from 51 articlestest particleidealized model of a particleAvailable in 12 languagesEspañolFrançais日本語РусскийPortuguêsالعربيةChuvashSvenskaUzbekفارسی한국어Connectionspoint particleEntityEarthConceptCategoriesMathematics of general relativity