Materials are characterised by their spectrum as well. It can be identified through the analysis of their light given when heating them, or in the case of gases by placing them in the way of white light. Atoms, which are the basic elements of materials, can only produce or absorb light of given colour or frequency.

These frequency intervals and intensities are unique for materials in the same way as fingerprints are for people.

This characteristic feature is used to analyse the structure the material’s components, as the already known spectral structure of the components help the analysis.

The emissional lined spectrum of the material

The absorptional lined spectrum of the material