🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسیहिन्दीไทย한국어中文日本語EntityQ741979· pop 30· linked from 178 articlesextremely low frequencyAlso known as ELF, decamegametric wavesthe 3–30 Hz range of the electromagnetic spectrumAvailable in 30 languagesEspañolFrançaisDeutsch中文日本語PortuguêsItalianoالعربيةहिन्दीBahasa IndonesiaConnectionsultraviolet radiationEntityX-rayEntityCategoriesIARC Group 2B carcinogensRadio spectrum