If your portfolio declines by 10 percent in the first year of your retirement, itâs already sunk to $258,000 at the end of year one, including your first year of withdrawals.
FTIR redirects here. FTIR may also refer to Frustrated total internal reflection. Fourier transform infrared spectroscopy (FTIR) is a technique which is used to obtain an infrared spectrum of absorption, emission, photoconductivity or Raman scattering of a solid, liquid or gas.n a Michelson interferometer adapted for FTIR, light from the polychromatic infrared source, approximately a black-body radiator, is collimated and directed to a beam splitter. Ideally 50% of the light is refracted towards the fixed mirror and 50% is transmitted towards the moving mirror.
The goal of any absorption spectroscopy (FTIR, ultraviolet-visible (UV-Vis) spectroscopy, etc.) is to measure how well a sample absorbs light at each wavelength.TIR is a method of measuring an infrared absorption spectrum. For a discussion of why people measure infrared absorption spectra, i.e. why and how substances absorb infrared light, see the article: Infrared spectroscopy.