🌐EnglishEnglishEspañolFrançaisItalianoTürkçeالعربية中文EntityQ4165224· pop 9· linked from 39 articlesslow lightpropagation of an optical pulse at a very low group velocityAvailable in 9 languagesEspañolFrançais中文ItalianoالعربيةCatalanTürkçeUkrainianvia Wikidata sitelinks · CC0Connectionsrefractive indexEntitycolorEntityCategoriesLightNonlinear optics