Spectroscopy is the study of spectra, ie characteristic wavelengths or colours.
In OES, we measure spectra emitted by atoms and ions with optical transitions in the wavelength range from about 100 nm to 900 nm. Knowing the content of materials, we can monitor changes in the environment, and improve production processes and product properties, such as strength, corrosion resistance and appearance. Knowing their electronic structure, we can test the predictions of quantum theory and better understand the behaviour of the chemicals that compose our bodies, our food and the world we live in. Knowing the elements in stars, we can learn much about their age and their origins, and from this help understand the nature of the universe. Copyright 1999-2001 Surface Analytical .