Home›Browse›spectral index🌐EnglishEnglishEspañolFrançaisItalianoNederlandsРусский한국어中文日本語EntityQ2280060· pop 9· linked from 54 articlesspectral indexSign in to savemeasure of the dependence of radiative flux density on frequency (astronomical term)Wikidata factsInstance ofmeasurementSources (3)wikidata.orgdocs.openalex.orgweb.archive.orgvia Wikidata · CC0Available in 9 languagesEspañolFrançais中文РусскийItalianoCatalanNederlandsUkrainianvia Wikidata sitelinks · CC0