page_title: Fourier-transform infrared spectroscopy
hierarchical_section_title: Fourier-transform infrared spectroscopy
caption_attribution_description: English: FTIR Spectrometer + ATR
context_page_description: Fourier-transform infrared spectroscopy is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid or gas. An FTIR spectrometer simultaneously collects high-spectral-resolution data over a wide spectral range. This confers a significant advantage over a dispersive spectrometer, which measures intensity over a narrow range of wavelengths at a time.
  The term Fourier-transform infrared spectroscopy originates from the fact that a Fourier transform is required to convert the raw data into the actual spectrum.
context_section_description: Fourier-transform infrared spectroscopy (FTIR) is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid or gas. An FTIR spectrometer simultaneously collects high-spectral-resolution data over a wide spectral range. This confers a significant advantage over a dispersive spectrometer, which measures intensity over a narrow range of wavelengths at a time.
  The term Fourier-transform infrared spectroscopy originates from the fact that a Fourier transform (a mathematical process) is required to convert the raw data into the actual spectrum.
caption: An example of an FTIR spectrometer with an attenuated total reflectance (ATR) attachment
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