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- cian-infridhearg Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- far infrared | FIR | far-IR | far infrared spectrum
- en
- Definition "one of the three infrared spectral regions of the electromagnetic spectrum, comprising wavelengths from 25-40 to 200-350 microns" Reference "COM-Terminology Coordination, based on: IPAC > Near, Mid & Far Infrared (26.8.2022)"
- Comment "The other two spectral regions of infrared are near infrared and mid infrared. The boundaries between the near, mid and far infrared regions are not agreed upon and can vary."