Spectrochemistry is the application of spectroscopy in several fields of chemistry. It includes analysis of [https://imagine.gsfc.nasa.gov/science/toolbox/spectra1.html ] in chemical terms, and use of spectra to derive the structure of chemical compounds, and also to qualitatively and quantitively analyze their presence in the sample. It is a method of chemical analysis that relies on the measurement of [https://www.qrg.northwestern.edu/projects/vss/docs/communications/1-what-is-wavelength.html ] and intensity of .