How Much Does a Lie Detector Test Cost. How Much Does a Lie Detector Test Cost. The application potential of polygraphs makes this tool one of the most sought after private investigator services. Many people in the UK seeking the truth in a matter that is of interest to them have turned to private investigators to have polygraphs administered.
Confidence votes 228. Infrared spectroscopy, or IR spectroscopy, is a method of spectroscopy used by organic chemists to help determine the structure of an unknown molecule. An IR spectrum will have peaks based on how much light was visible when shone through different parts of the molecule.
Definition of Near-infrared spectroscopy (NIR). Search the Dictionary. NIR spectroscopy is the measurement of the wavelength and intensity of the absorption of near-infrared light by a sample.Near-infrared light spans the 800 nm - 2.5 Âµm (12,500 - 4000 cm-1) range and is energetic enough to excite overtones and combinations of molecular vibrations to higher energy levels.IR spectroscopy is the measurement of the wavelength and intensity of the absorption of near-infrared light by a sample.