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.
Astronomical spectroscopy. Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light and radio, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.