rotational spectrum Fourier transform far-infrared spectrum FT/FIR spectrum A plot of absorbance or emission vs. wavelength/wavenumber/frequency obtained through a Fourier transform of the times series of the absorption of a sample that has been excited by an far-infrared-frequency pulse. FTFIR spectra https://orcid.org/0000-0001-5985-7429 Fourier transform far infrared spectrum FT-FIR spectrum FTFIR spectrum FT-FIR spectra Fourier transform far infrared spectra FT-far-IR spectra Fourier transform far-infra-red spectrum FT/FIR spectra CHMO:0002702 Fourier transform far-infrared spectrum Fourier transform far-infrared spectra 2010-05-27T02:16:23Z