🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTürkçeРусскийالعربيةفارسی한국어中文日本語EntityQ2613048· pop 30· linked from 134 articlesHydrogen Line Spectrumimportant atomic emission spectraConnectionsJohann Jakob BalmerEntityGermanyCountryCategoriesEmission spectroscopyHydrogenHydrogen physics