🌐EnglishEnglishEspañolالعربية한국어中文EntityQ4118612· pop 8· linked from 22 articlescoherence timethe time over which a propagating wave (especially a laser or maser beam) may be considered coherentAvailable in 8 languagesEspañolالعربيةCatalanHebrewKazakhUkrainian한국어via Wikidata sitelinks · CC0ConnectionscoherenceEntitytimeEntityCategoriesElectromagnetic radiationOptical quantitiesPhysical opticsRadio frequency propagation