This colorful Periodic Table of Spectra is a wonderful teaching aid and a great complement to your current periodic table as it graphically shows the student the uniqueness of the spectrum of each element. The Periodic Table of Spectra presents an opportunity to discuss the emission and absorption spectra that form the basis of spectroscopy, which uses spectra to provide information about the structure and the composition of a substance or an object. For example, astronomers use emission and absorption spectra to determine the composition of stars and interstellar matter and forensic investigators sometimes use spectra to identify the composition of evidence found at the scene of a crime. This laminated poster is 24″ x 36″ and is a high-quality, high-resolution print with brilliant colors.