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 method of Fourier transform spectroscopy can also be used for absorption spectroscopy. The primary example is  FTIR Spectroscopy , a common technique in chemistry.he Fourier transform spectrometer is just a Michelson interferometer but one of the two fully reflecting mirrors is movable, allowing a variable delay (in the travel-time of the light) to be included in one of the beams. The Michelson spectrograph is similar to the instrument used in the MichelsonâMorley experiment.